Re: [Repeater-Builder] New Repeater Desense Problems
Don't leave out the isolated TEE between the duplexer and dummy load, Ron. Hi, Steve NU5D Ron Wright wrote: Bill, In finding desense first one must locate the problem. A given. I would start with putting GOOD dummy load on the duplexer output and do a desense test. This can be done with a local signal gen where you can vary the gen output and keying and unkey the transmitter. You should see no difference in the received signal with tx keyed or unkeyed. If you do then the desense is in the repeater. Next do the same test with the dummy load on the transmtter only. This will test for the desense being inside or outside the radio part of the repeater. I would look at your LMR400 and antenna. I think the LMR400 is a double shielded cable with different metals for the 2 shields. This is a no no in duplexed system. It generates noise. It has been discussed here on this board many many times and for good reason. If this is a problem replace with a good heliax. It is worth the cost. This is a start. 73, ron, n9ee/r
Re: [Repeater-Builder] Re: MSR 2000
Well I dug out my MSR2000 hiband service manual, and as I remembered, the PA is intermittent duty and not continuous duty. The manual does mention a temperature sensor that goes to a feed back loop and reduces output power for self preservation when things get hot. The radio is pretty much a Mitrek design with what looks pretty close to a Micor PA. I set up one hiband station with a dual receiver (some kind of telco simplex base / repeater operation and it seemed like out of the box I could not get full power out - I did not try and do any modes on a 2M ham freq. I also maintained an UHF MSR - Med Base / Rept - seems like 75 watt version and had a couple of collector burns in the PA - otherwise seemed to be OK stations. Steve NU5D nj902 wrote: MSR2000 far superior to the Mastr II ?
Re: [Repeater-Builder] Frequency Change do I retune duplexer?
Most band pass / band reject will be plenty wide - I measured over 200 Khz on a Wacom 678 that I use with 3 UHF close spaced combined trunking repeaters (some minor loss). I don't believe re-tuning will be needed. Steve NU5D garyp609 wrote: If a repeater was on 447.575 and the frequency was changed to 447.5625 would the duplexers need to be re-tuned? Thanks 73's Gary K2ACY
Re: [Repeater-Builder] Re: Duplexer tuning with an Oscilloscope
This would not be your typical audio frequency or 20 Mhz vertical bandwidth scope, I suppose, I have used a Bearcat programmable radio scanner and an FM10 for a generator to tune pass and reject. Steve NU5D jistabout wrote: Hi Joel, Well, setup is quite simple - For example, if tuning a complete
Re: [Repeater-Builder] Line Stretcher
I whole heartedly agree, Glenn, but with one say 100 Watt pa feeding a cavity duplexer, there is no phase delay issue, just a minor mis-match, that I doubt would ever be seen or heard outside the transmitter shack. The advice I was given on duplexers is once they are tuned properly, leave them alone. The difference you see from a little tweaking will not be noticeable, and external matching devices like a Z-Matcher or a tuning stub don't generally offer enough benefit to be worth while. 73, Steve NU5D On 6/30/07, Glenn Little WB4UIV [EMAIL PROTECTED] wrote: WE also use a line stretcher in TV. When you have two UHF PAs that are fed to a combiner, it is very important that the phasing of the signals be correct. We use a line stretcher in the output of the exciter to the closest PA to effectively place the PAs at the same electrical distance from the exciter. This gets the phasing correct into the combiner. When dealing with 25KW PAs, a little phase difference makes for a lot of loss in signal in the combiner. 73 Glenn WB4UIV -- Ham Radio Spoken Here.NU5D Nickel Under Five Dollars
Re: [Repeater-Builder] Re: OT: Need to find a product to develop goodwill at a tower site(s
I like the key click idea - get an older CES phone patch with 5 key click dialing - when the line goes off hook (on a local battery circuit with a relay in series) let the loop current call in a relay to activate the door opener - no security but kinda neat and it could time out after so many seconds (I think) - best luck, Steve NU5D On 5/27/07, skipp025 [EMAIL PROTECTED] wrote: Moving along... There is a method/circuit found at airports where pilots tx click radio mics in rapid sequence to turn on night-time runway lights. It's not high security at a locked electric gate but it does work if the secret can be kept under control. And you wouldn't have to buy/supply dtmf mics. As just a sidebar thought... you could set up a circuit for... say 3 rapid clicks and one or two long clicks to open the gate. I can see that easily being done with some cmos d flip flop logic or a small pic processor if you really were motivated. It'll be much more secure than broadcasting tones over the company frequency where someone could be listening. Also, the garage door openers are short range so that there's less chance of an accidental unlocking. They rejected this idea. They want to use the company radios, for some reason that I can't figure out. Joe One other idea I just thought of is simply using a ctcss decoder with a different ctcss on the same channel. No dtmf mic required... just program a second same frequency - different ctcss encode into radio and hit the mic tx button. If you wanted an extra level of security... make it (add) a 3 mic fixed time tx click detect circuit to prevent any false ctcss circuit detects. Or a 3 to 5 second second ctcss long detect-time requirement to fire the gate open controller logic. And... you could offer up the second ctcss decode remote access control from a much more distant user/admin location (a selling feature!) if you use a good receiver on a decent antenna. The key-chain remote control system is probably the most practical and cost effective secure choice for some empire building admin (supervisor) type people . It's often sold by Jameco type places and it's cheap enough. The second ctcss possible mic click detect circuit simply involves programming a second channel into the user radio and some basic user instruction. (a club to the side of the head until they get it right) I haven't seen much of a generic commercial rough-service dtmf mic that really gets my motor going. cheers, skipp Actually, they will have to replace all the mikes with TT mikes. Given the cost of the new mikes and special equipment at the electric gates, etc, it would be a lot cheaper to go with the garage door opener style system. Maybe I'll work up an estimate of what they might spent for both systems and the economics might help them make a better choice. joe Yahoo! Groups Links -- Ham Radio Spoken Here.NU5D Nickel Under Five Dollars
Re: [Repeater-Builder] Re: DStar Repeater Pics
Hey Skipp, I think the trick may be to keep the cable immobilized. I have it secured to the tower at every rung so it don't flex in the breeze - I have seen 7/8 air puncture from slag in the galvanizing on the tower. So far I have had good luck - I have had LMR 600 up on 3 runs at 100 ft and 3 runs at 150 feet for about 8 years now - used for back to back radios using Rayfields NetLink MP. Also have some LMR1200 but 7/8 stuff is just as cost effective and weighs much less. Time will tell and thanks for your kind warnings, 73, Steve NU5D On 5/23/07, skipp025 [EMAIL PROTECTED] wrote: Very nice... but... fed with 1/2 LMR 500 It will be interesting to find out how the LMR-500 works for you over time. I hope you don't use the words cluster [EMAIL PROTECTED] in your -- Ham Radio Spoken Here.NU5D Nickel Under Five Dollars
Re: [Repeater-Builder] Crystalls required
Much will depend on the Brand and Model of the repeater you are converting. International Crystal Manufacturing in Oklahoma City, Oklahoma, USA http://www.icmfg.com/ may be able to help. Important first step - be sure the repeater is working properly BEFORE you make any changes. Best 73, Steve On 5/13/07, atdengiz [EMAIL PROTECTED] wrote: Dear Friends, My club, ANTRAK (Radio Amateur's Club of Ankara), is converting the frequencies of the out of band VHF repeaters (5 Ea)to Ham Band (144-146 MHz) to be able to use them for amateur service. 1- We are looking for the sources of the crystals needed and kindly ask the group where to order from stock ; or, for cutting to exact frequencies. 2- What are the parameters needed to order the crystals. The freq. of the repeaters are in between ; Rx 145.000 to 145.175 ,IF is 21.4 MHz (25 KHz step 8 of them needed) Tx 145.600 to 145.775 , (25 KHz step 8 of them needed) For the original crystalls ; Rx crystalls Fc= (f-21.4)/2 Fx crystalls Fc= f/9 -- Ham Radio Spoken Here.NU5D Nickel Under Five Dollars
Re: [Repeater-Builder] inverter / charger schematic needed
http://golden-eagle-electronics.com/ Might see what Golden Eagle has to say, Steve On 5/13/07, georgiaskywarn [EMAIL PROTECTED] wrote: Good Evening, I am looking for a schematic for this; http://cgi.ebay.com/NEW-2000-DUAL-SYSTEM-POWER-INVERTER-W-CHARGER_W0QQitemZ5811686193QQihZ002QQcategoryZ85805QQrdZ1QQssPageNameZWD1VQQcmdZViewItem I have seen this unit go by PowerExpress as well. Thanks, Robert KD4YDC -- Ham Radio Spoken Here.NU5D Nickel Under Five Dollars
Re: [Repeater-Builder] shark frenzy on ebay for 500 watt vhf amplifier
Well OM, what did it go for??? Paid $1100 for a used Commander II with a good tube a year or so ago - old amp but sure works nicely. Steve NU5D On 5/2/07, skipp025 [EMAIL PROTECTED] wrote: It was real fun watching some of you shark over that 500 watt vhf amplifier listed on Ebay. Henry Electronics RF Amplifier FM Repeater VHF 2-meter Item number: 230122381708 I honestly thought it would sell for more than the closing price. Nothing like an auction with 3490 hits to tell you a lot of people were watching. -- Ham Radio Spoken Here.NU5D Nickel Under Five Dollars
Re: [Repeater-Builder] New repeater Motorola or MA/COM
Hello Andy, are you meaning the M3 is not made for 800 Mhz., or not dual band (800/900)? The ones I maintain are 800 Mhz. Steve On 4/30/07, Andrew G. [EMAIL PROTECTED] wrote: I have used, programmed, setup, and interfaced both the Motorola and MA/COM equipment. I like both equally. The Motorola Quantar is very nice, and everything is self contained. Not big on the MTR2000 station but they are fine as well. The MA/COM MASTR III repeaters are great also. Only drawback is they are not made for 800/900MHz. Other than that, its really who you want to deal with. Andy -- -- Ham Radio Spoken Here.NU5D Nickel Under Five Dollars
Re: [Repeater-Builder] New repeater Motorola or MA/COM
Understood - On 4/30/07, Andrew G. [EMAIL PROTECTED] wrote: My bad on that one Steve. Meant to only throw it in as 900. We had a need for a high split 900 station 934-950 and could not get a M3. Still fighting Motorola for a Quantar to use there. Due to the frequency pair we have, it overlaps the two models they make between TX freq RX Freq, but thats another story for another thread. Andy Ham Radio Spoken Here.NU5D Nickel Under Five Dollars
Re: [Repeater-Builder] Re: Repeating D-Star
I don't think you will be able to just plug binary data into a radio transmitter unless there is a made for the purpose FSK input for binary data that would support the DSTAR data rate. Steve On 4/27/07, Gary [EMAIL PROTECTED] wrote: You'll have to check with AOR on that one. For all we know whatever contract they may have with DVSI may be specific to the modem. I figured two years ago when they introduced the AR-ONE that they would include some decoders, or an expansion port for an option card, or maybe even trunking but no joy. It seems almost no communications receiver manufacturer wants to make the leap and start offering scanner features in their comm receivers. I know, the Wulfbergs do but even I won't spend that much at this time. If I see Taka (from AOR-USA) at Dayton I try to speak with him about this issue. Gary George Henry wrote: They're already using a DVSI AMBE vocoder in their HF digital voice modems. it's certainly not a large leap from there to D-Star. SOMEONE will do it soon enough... I just figured AOR might be the first, since they already have at least part of a foot in the door. George, KA3HSW / WQGJ413 Yahoo! Groups Links -- Ham Radio Spoken Here.NU5D Nickel Under Five Dollars
Re: [Repeater-Builder] Tone remote setting question
I use a TIMS Meter - transmission impairment measuring system - Halcyon, Convex, NT, even Helper Instruments made a nice $300 box for basic testing. Steve NU5D On 4/27/07, N9WYS [EMAIL PROTECTED] wrote: My helper told me that I need to start looking for test equipment - he's taking a different job and won't have access to the equipment he does now. Inasmuch, what is the test meter called that you use to measure the signal level across/on phone lines? I'm told that I need one that measures in dB, I believe. Thanks! Mark - N9WYS -- Ham Radio Spoken Here.NU5D Nickel Under Five Dollars
Re: [Repeater-Builder] Tone remote setting question
I believe 16 db would be terribly excessive loss for a line - maybe 6 db tops. I usually set -10 dbm @ 1000 hz for +/- 3 khz deviation. ). 0 dBm for max deviation. and let the tone levels fall into place as you have indicated. If the line measures 6 db of loss @ 1000 hz, you may want to move the hold tone from -20 dBm to -17 or -14 dBm and the remainder accordingly. Also loss may vary with tone frequency, so loss at 1000 hz may be far different from loss at 2175 hz. Best luck, Steve NU5D On 4/26/07, tim_shephard [EMAIL PROTECTED] wrote: I'm working with a GE repeater, Master II. Its tone remoted. It is setup and working, but I'd like to know how to set the tone remote -- Ham Radio Spoken Here.NU5D Nickel Under Five Dollars
[Repeater-Builder] D-Star Lite, Star Bright
Well I played around a little this afternoon and placed a couple of back to back diodes between the discriminator and the tx deviation pot on the phoenixs. There is slight overshoot now on the waveform, but it seems to work just fine on voice. The ID Text must be on the front end of each transmission, and it is pretty much lost in transmitter keyup delay on the TX Phoenix radio. If I leave the Phoenix keyed with a clip lead the Unit ID passes AOK. Next will be a better signal processing mechanism, and maybe audio delay - and see if this stuff catches on. Temple, Texas has a pop of about 50,000 and maybe 50 active hams, and far fewer that frequent repeaters, so there is not a whole bunch of activity to begin with in general. Regardless, it has been fun tinkering and a learning experience - been years since I did a 4 resistor bias on a common emitter stage73, Steve Far as legalities go - ask a convict - he would know with some degree of expertise what is illegal (or an attorney???)steve -- Ham Radio Spoken Here.NU5D Nickel Under Five Dollars
[Repeater-Builder] Repeating D-Star
Took a couple of antique GE Phoenix SX mobile radios. Programmed for 442.0/ 447.0. With TOT. Carrier Squelch - Took Receiver Un Squelched lead to PTT thru a one transistor keying transistor. Took VOL / SQ Hi and ran it thru a single common emitter stage - bipolar amp and applied the collector output to the high side of the TX deviation control and set for +/- 1 Khz TXD. Did have to bypass the emitter leg of the single stage amp and wallah - DSTAR Repeater - sort of. Maybe P25 repeater too? Simple - really do need to regenerate the data signal and key on detected data with a CCD chip to give the preamble tone time to get thru. Until P25 radios become ham affordable I don't think they will be mainstream ham radio. I believe there is still a pretty hefty payment to Moto for use of the P25 standard, but I may be wrong. Steve NU5D On 4/24/07, Jim B. [EMAIL PROTECTED] wrote: James wrote: Bryon Jeffers K0BSJ wrote: Well I will agree with Nate on this one.. The crazy D-Star will only do it's AMBE digital and will not pass analog voice... At least when using a Quantar/Quantro with P25 capability you can set it up with CAI (Clear Air Interface)/P25 IMBE and it will do either analog voice PSST ... hey there ... :) Doesn't CAI stand for Common Air Interface. (Thats the Astro IMBE that all the manufacturers support, wheras BIG M used to have the AMBE version) Yup! But don't use the term Astro. Astro is a Motorola trademark, like Private Line (PL)! IMBE is the vocoder chip type, and has nothing to do with Motorola. The original Astro used a VSLEP vocoder chip, and is not supported by Motorola anymore. Ahhh ... the wonderful world of acronyms!! James Boy, is THAT an understatement -- Jim Barbour WD8CHL Yahoo! Groups Links -- Ham Radio Spoken Here.NU5D Nickel Under Five Dollars
Re: [Repeater-Builder] Repeating D-Star
Thanks Gary, so what will it cost Mondo Ham to go out and buy a VHF P25 radio - portable - battery and charger antenna and speaker/mic new or used and the stuff to program it with? Thanks, Steve On 4/24/07, Gary [EMAIL PROTECTED] wrote: Yes you are wrong. Motorola does not nor did they ever own the APCO Project 25 standard. Many multiband excitation technologies commonly used today are the property of Digital Voice System Inc. (DVSI). They license Motorola (and other manufactures) to use the designs in their P25 radio systems. P25 amateur repeaters are slowing popping up here and there but mostly by LMR professionals who are also amateurs and have access to surplus gear so I agree with you that it will be some time before it becomes mainstream. Gary -- Ham Radio Spoken Here.NU5D Nickel Under Five Dollars
Re: [Repeater-Builder] Service Monitors with D-Star
General best to look at the eye pattern on the receiver. Steve I am just getting started with Dstar - have worked Pro Voice and Aegis for a while. sb On 4/22/07, skipp025 [EMAIL PROTECTED] wrote: Nate Duehr [EMAIL PROTECTED] wrote: how are people testing/working on their D-Star systems? I can't think of a single SM that knows how to do bit-error rates and/or other AMBE vocoder functions. The fudge answer is... most people just connect the equipment and press the go (power on) button. skipp -- Ham Radio Spoken Here.NU5D Nickel Under Five Dollars
Re: [Repeater-Builder] Service Monitors
Cheep Service Monitor - Take a receiver and an oscilloscope and calibrate the scope to measure transmitter deviation. Then use an inexpensive frequency counter. For receiver testing find a surplus generator and use it with the counter and home made deviation meter (receiver / scope combination). Filter / cavity duplexer tuning will not be as easy, but it can be done. Better yet if the receiver has a discriminator zero output for freq setting. Steve NU5D On 4/21/07, Jack Taylor [EMAIL PROTECTED] wrote: Along with a custom built repeater project, how about a custom built basic service monitor? The $1500 and up used/new service monitors are a necessity for those in the business but for those who only have a need to tune an occasional radio, a less expensive tool would be nice. Any suggestions? 73 de Jack - N7OO -- Ham Radio Spoken Here.NU5D Nickel Under Five Dollars
Re: [Repeater-Builder] Re: Moto Pulsar 120 (IMTS phone war stories)
My first job in the business was as a service tech for an RCC. We had a GE IMTS terminal with hand wired 5th Selector Level stroger switches on the direct inward dial trunks complete with sleeve lead control. There were 4 selector switches, and one block on 1000 numbers. In addition to the GE IMTS terminal there was also a Motorola LO9DAL dial access paging terminal that used code plan 'S' The code plan determined which 2 groups of tones were used in two tone sequential. The pagers were Bell and Howell and KEL - that used either alkaline or mercury batteries. The IMTS system had about 20 T1433AE full duplex FACTS (fully automated car telephone system) radios and control heads. (there were fewer than 50 pagers in Temple, TX in 1975). Drew about 2 amperes while idle. Took a channel element like you described (radio was similar to a Mocom 70) and ran it up to about 40 watts VHF before it hit the varactor tripler and the duplexer. There was one Moto base station and one GE PRO series station - (we had only 3 channels to start with) I never will forget the day when it got so hot at the site in Temple - south of Waco abt 30 miles that the plastic relay covers on the Moto melted and kept the TX from keying - no isulation or anything - just a tin shed on a hill top in a corn field. When the stations were keyed via remote control phone line, the station would change the load resistance to tell the terminal that it had come up to full power, else there was a remote fail indicator at the terminal. Next came the customer owned and maintained units - Moto Pulsars and GE / Secode Mark 5 heads. We also has some Secode DID1 terminals and VP1 control heads, but these were on VHF with the TLD1100's. Interesting, the TLD1100 also drew 2 amperes in standby, due to the 5894 PA and driver tubes, not like the T1433AE with the all PNP transistor supervisory logic pack. All this for just $3.50 an hour just out of tech school. 1/2 a day Saturdays at overtimeyou could almost make a living. When I left the RCC in 1981 for a microwave / T1 transmission job at Centel in 1981 there were 600 pagers and 40 some odd mobile phones. We implemented metered service in 1979 - cost went from $72.60 per month unlimited to the same plus $0.20 per minute or portion there of. I remember seeing some $300 phone bills - we got about 1/2 the rental phones back - and continued to make the same revenue with 1/2 the equipment in the field. Tone and voice pagers were running $15 per month, and tone only were $9 per month. Those were the days. Steve NU5D We On 3/26/07, Milt [EMAIL PROTECTED] wrote: If it was a copper colored square channel element, then the radio should have been about 2ft long, 6high, and 15 wide and weighed enough to eliminate the need for the extra couple of sandbags in the trunk in the winter. TLD-1100 comes to mind but that was the VHF version. Based on a Motrac, the VHF units still used 3 tubes to get up to 50 watts before the duplexing filter. The UHF was solid state and ran about 18-20 watts out. They were very popular with the telephone company folks around MD. -- Ham Radio Spoken Here.NU5D Visit the Temple Ham Club Website http://www.tarc.org www.yahoogroups.com/group/Temple_arc www.yahoogroups.com/group/60meter
Re: [Repeater-Builder] Re: Preamp and attenuator
Sounds like a nice setup Dwayne. I would make sure the duplexer is tuned properly, maybe run an isolated TEE test just to be sure everything is OK. Next I would rotate the coupling loops to increase insertion loss and make the skirts steeper. What Wacom taught me to do was to take a cavity, hook up a sweeper with a TEE fitting between the Gen and Rec and set a reference signal, then hook the TEE to one side of the cavity and rotate the loop for about 8 db of notch at the pass freq, then move the TEE to the other side of the cavity, and again rotate the second loop for the same degree of notch - this makes the cavity symetrical so that both the input and output loops have the same degree of coupling. Next measure the loss through the cavity. Play with the degree of coupling and insertion loss till you get what you are looking for. Best 73, Steve NU5D RG-400 or LMR 400? sb On 3/21/07, ldgelectronics [EMAIL PROTECTED] wrote: Steve, It's on 2M, single Station Master antenna with about 400 feet of 7/8 feedline. The duplexer is a BP/BR followed by a band pass can, then the pre, then the radio side. All cables are RG-400. The radio is GE Exec II. The sensitivity without the pre is about 0.35 uV. The noise floor is pretty low, but the ARR pre was picking up a bunch of garbage without the attenuator. Dwayne Kincaid WD8OYG -- Ham Radio Spoken Here.NU5D Visit the Temple Ham Club Website http://www.tarc.org www.yahoogroups.com/group/Temple_arc www.yahoogroups.com/group/60meter
Re: [Repeater-Builder] Re: Preamp and attenuator
I did mean coupling loops on the single band pass cavity and not the duplexer. SB On 3/21/07, Steve Bosshard (NU5D) [EMAIL PROTECTED] wrote: Sounds like a nice setup Dwayne. I would make sure the duplexer is tuned properly, maybe run an isolated TEE test just to be sure everything is OK. N -- Ham Radio Spoken Here.NU5D Visit the Temple Ham Club Website http://www.tarc.org www.yahoogroups.com/group/Temple_arc www.yahoogroups.com/group/60meter
Re: [Repeater-Builder] A Monday Laugh
If you speak long enough to take a breath, you've talked tooo long. Steve NU5D
Re: [Repeater-Builder] Am I being Censored ?
Most likely just yahoo and your isp - a friend here in Temple on road runner takes hours for a post to go through, while a different isp goes through in minutes. 73, Steve NU5D
Re: [Repeater-Builder] Very busy at the moment...
Hey Paul, An easy way to stop emails for a bit, without leaving the group, is to go to www.yahoogroups.com/group/repeater-builder and set your account to NO EMAIL. You can still look at messages at the address above, but will not receive them as emails. You can also try digest, where you get one bulk email per day. 73, Steve NU5D
Re: [Repeater-Builder] Re: Shiny antennas (Black, Chrome and Salmon Colors)
I posted the comment about shiny antennas totally tongue in cheek and not to be taken seriously. A coating of aluminum oxide should have practically no effect on antenna performance. As far as particles vs waves, seems like some theory fits particles and other theory fits wave theory (Planks and Maxwells?) - I can get more info from our oldest son, AD5RN if needed - he is studying that kind of stuff down at Texas AM.. Steve NU5D
Re: [Repeater-Builder] G.E.MVS Serice Manual
www.bosshardradio.com/NU5D/mvs
Re: [Repeater-Builder] Re: Antenna Gain Specs
Well I have gone back to Decibel catalogue 23. Older books discarded. I am pretty sure that at one time the DB224 was rated at 4.5 dBd, and then later at 6 dBd., but this is from memory, I can't find an older catalogue. Regarding a clean and shiny antenna, we had a discussion at coffee. The preposition was that radio waves and light have many similarities, ie., wavelength, reflection, Fresnel behavior, and so forth. Using these similarities, a mirror reflects light, and a dark surface absorbs light, so, wouldn't a shiny antenna reflect incoming signals while a dark colored antenna absorbs signals? This may only apply to receiving antennas - hope I can get this idea to market before the April 1 edition of QST.. .. .. de nu5d
Re: [Repeater-Builder] Shiny antennas (was Re: Antenna Gain Specs)
Go for it, Roger - hope folks get a chuckle. Steve NU5D
Re: [Repeater-Builder] Antenna cleaning solvent ???
Wouldn't the pitting give the antenna more surface area, broader bandwidth, and more gain? DE NU5D On 2/14/07, John [EMAIL PROTECTED] wrote: What is a good cleaning solvent for aluminum repeater antennas? I have an antenna that was exposed to the weather for years and it has become pitted and dirty from the enviroment. Thanks, John -- Ham Radio Spoken Here.NU5D Visit the Temple Ham Club Website http://www.tarc.org
Re: [Repeater-Builder] Advanced Receiver Research Preamp 144-148
Seems like ARR sells them for around $15 each. sb
Re: [Repeater-Builder] Advanced Receiver Research Preamp 144-148
Hey Jeff, I have a very dear friend who cannot keep from 'improving' on alignment. This started with the old railroad T43GGV up to the Regency RH250B, and an Atlas 210. I gave this fellow the RH250B, tuned and programmed for the local 2M FM repeaters and put a stick on seal on the case - Bill, if the seal is broken, don't bring the radio back - ever. He went close to 6 years before the on/off switch pooped out, 73, steve
Re: [Repeater-Builder] Intermod
Shouldn't the 147.765 subscriber station be counted in the mix? While the distance and field strength may vary, the user sending to the 147.165 does make a contribution to the mix. sb On 2/3/07, Fred Flowers [EMAIL PROTECTED] wrote: Kevin, Please allow me to pick your brain. I was just informed of an intermod problem with 2 two meter repeaters. They are on towers about 2 miles apart. The frequencies are 147.33+ tone 107.2 147.165+ no tone. Two weeks ago I replaced the 147.33 equipment with a Mastr II station repeater 4 cavity DB duplexer. I believe the 147.165 repeater to be a Micor. When the 165 is on the air, 33 can be heard on the input of 165. I show a third order of 270 kHz away a fifth order of 270 105 kHz away. -- Site Name: BG33 Frequency Separation: 600.00 KHz Site Description: Ham Calculate 1st Order: true Company: Calculate 2nd Order: true User Name: Fred Flowers Calculate 3rd Order: true Address: Calculate 4th Order: true Time of Printing: February 03, 2007 Calculate 5th Order: true -- *Transmitter Frequencies* 147.16500 MHz 147.33000 MHz *Receiver Frequencies* 147.76500 MHz -- *Transmitter Freq(s).* *Receiver Freq.* *Freq. Separation* *First Order (Direct) Results:* 147.1650 MHz 147.7650 MHz 600.00 KHz 147.3300 MHz 147.7650 MHz 435.00 KHz *Second Order Results:* *Third Order Results:* 147.1650 MHz - 147.1650 MHz - 147.1650 MHz 147.7650 MHz 600.00 KHz 147.1650 MHz + 147.1650 MHz - 147.1650 MHz 147.7650 MHz 600.00 KHz 147.1650 MHz - 147.1650 MHz - 147.3300 MHz 147.7650 MHz 435.00 KHz 147.1650 MHz - 147.3300 MHz - 147.3300 MHz 147.7650 MHz 270.00 KHz 147.1650 MHz + 147.3300 MHz - 147.3300 MHz 147.7650 MHz 600.00 KHz 147.3300 MHz - 147.3300 MHz - 147.3300 MHz 147.7650 MHz 435.00 KHz 147.3300 MHz + 147.3300 MHz - 147.3300 MHz 147.7650 MHz 435.00 KHz *Fourth Order Results:* *Fifth Order Results:* 147.1650 MHz + 147.1650 MHz + 147.1650 MHz - 147.1650 MHz - 147.1650 MHz 147.7650 MHz 600.00 KHz 147.1650 MHz + 147.1650 MHz - 147.1650 MHz - 147.1650 MHz - 147.1650 MHz 147.7650 MHz 600.00 KHz 147.1650 MHz + 147.1650 MHz - 147.1650 MHz - 147.1650 MHz - 147.3300 MHz 147.7650 MHz 435.00 KHz 147.1650 MHz + 147.1650 MHz - 147.1650 MHz - 147.3300 MHz - 147.3300 MHz 147.7650 MHz 270.00 KHz 147.1650 MHz + 147.1650 MHz - 147.3300 MHz - 147.3300 MHz - 147.3300 MHz 147.7650 MHz 105.00 KHz 147.1650 MHz + 147.3300 MHz + 147.3300 MHz - 147.3300 MHz - 147.3300 MHz 147.7650 MHz 600.00 KHz 147.1650 MHz + 147.3300 MHz - 147.3300 MHz - 147.3300 MHz - 147.3300 MHz 147.7650 MHz 270.00 KHz 147.3300 MHz + 147.3300 MHz + 147.3300 MHz - 147.3300 MHz - 147.3300 MHz 147.7650 MHz 435.00 KHz 147.3300 MHz + 147.3300 MHz - 147.3300 MHz - 147.3300 MHz - 147.3300 MHz 147.7650 MHz 435.00 KHz *Calculations: 70* *IM Products Found: 18* *(c) Copyright 2007 - TCS Consultants, Inc. - All rights reserved.* My question is, are the 105 270 kHz signals close enough to cause problems with a Micor receiver? I have worked on Mastr II's sense they came out. I have spent the same amount of time running from Micor's. J BTW I heard through the grape vine that the owner of 165 added a preamp in the last day or so. I don't know what kind. I don't know how he's dealing with desense. Thanks Fred N4GER -- Ham Radio Spoken Here.NU5D Visit the Temple Ham Club Website http://www.tarc.org
Re: ADMs (was Re: [Repeater-Builder] Re: Commercial Trunking repeater)
Not sure how this got from commercial trunking repeaters to silence compression, but in the last days of tone and voice radio paging, silence compression, and digital reduction were very big items - seems like BBL. Freeman, Glenayre and Zetron were big players in the game - ancient history. sb On 2/3/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: At 2/2/2007 21:24, you wrote: Skip, Interesting you bring up that idea. I've had success with an initial CTCSS induced audio delay, ramped back -- Ham Radio Spoken Here.NU5D Visit the Temple Ham Club Website http://www.tarc.org
Re: [Repeater-Builder] Re: New article on Channel Element/ICOM stability - W3KKC
If there is such a thing - ICM in OKC would be tops, then Bomar, and down the line. sb On 2/3/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: At 2/3/2007 06:06, you wrote: On 2/2/07, Kevin Custer mailto:[EMAIL PROTECTED][EMAIL PROTECTED] wrote: e. , I really wonder if there's anyone out there that can truly be considered unconditionally reliable. I mean, is there any ONE crystal supplier that EVERYONE considers a rock of stability? (pun intended!) I suppose that's partly why I've resorted to developing my own alternative methods of frequency stabilization; file under if you want something done right, do it yourself. Bob NO6B -- Ham Radio Spoken Here.NU5D Visit the Temple Ham Club Website http://www.tarc.org
[Repeater-Builder] Belton Ham Expo 2007
The Temple Amateur Radio Club is gearing for the Ham Expo 2007, Held at the Bell County Expo Center in Belton, Texas Visit the Expo Page for important information: http://www.tarc.org/hamexpo/ -- Ham Radio Spoken Here.NU5D Visit the Temple Ham Club Website http://www.tarc.org
Re: [Repeater-Builder] Ritron RR454 svc manual needed
I scanned the book a couple of years ago - If I still have the pdf will send Mon or Tue. Steve NU5D On 1/13/07, jack_kr9q [EMAIL PROTECTED] wrote: Hello to the group, I am reworking a pair of RR454 rptrs and need a svc manual. Does anyone have a copy to sell or loan? Many Thanks 73 Jack KR9Q Yahoo! Groups Links -- Ham Radio Spoken Here.NU5D
Re: [Repeater-Builder] Wide area coverage
I have used Spoke and Hub system. Several 146 Mhz repeaters cross connected to 440 Mhz control stations, all looking at the same 440 repeater for distrubution between the different 144 Mhz repeaters. Steve NU5D On 1/7/07, allenittiyavira [EMAIL PROTECTED] wrote: Hello all, I am Allen, senior radio technician, working in Africa, new member. I have extensive experience in trunking systems, but not very good with conventional. -- Ham Radio Spoken Here.NU5D
Re: [Repeater-Builder] What Can Go Wrong With A Bird 43?
There is a connector on the back of the sloted line that resembles an old style microphone connector - I have had the center pin make poor contact and either read erratically or not at all. A meter could fail but I don't think I have ever seen that happen. sb On 12/31/06, dadavies3 [EMAIL PROTECTED] wrote: I use my Bird 43 wattmeter frequently and, until today, it has worked perfectly. Now, for some reason, there is no meter indication when transmitting through it to either an antenna or dummy load. I used different slugs, all with the same result. I tested the slugs in another Bird and they worked fine. What goes wrong with these meters? Is it a repair a can make myself or is it best to send it back to the manufacturer? Doug VE7DRF Ham Radio Spoken Here.NU5D
Re: [Repeater-Builder] E-Mail Change of Address
Before you change, be sure and send a [EMAIL PROTECTED] email (and same for other lists), then when your new account becomes active, send a [EMAIL PROTECTED] email. Probably telling you something you already know, but just in case. You will like the gmail account - no more changes unless you want them. Steve NU5D On 12/30/06, Jim Cicirello [EMAIL PROTECTED] wrote: Effective January 8th Adelphia/Time Warner will be gone. My new contact information is: [EMAIL PROTECTED] Jim Cicirello 181 Stevens Street Wellsville, New York 14895 585-593-4655 Home 716-498-3500 Cell -- Ham Radio Spoken Here.NU5D
Re: [Repeater-Builder] E-Mail Change of Address
You betcha, Jim. There is a way for you to use outlook express or other mail programs with gmail as well. Info is on the gmail page. Best 2007. Steve On 12/30/06, Jim Cicirello [EMAIL PROTECTED] wrote: Steve, I went into all my Yahoo Groups to include Repeater-Builder and changed by E-Mail address already. Just took the one off and added the G-Mail. Will that take alright? I have heard G-mail is good. 73 Jim KA2AJH Ham Radio Spoken Here.NU5D
Re: [Repeater-Builder] Need help troubleshooting a Motorola Mitrek UHF
Wo'ah - Aren't the OR and GN wires the A+ and A+ switched leads going into the control head? First question - did this lash up work and then quit, or are you trying to get it going from scratch? steve NU5D Next www.batlabs.com will probably have the hook up or www.repeater-builder.com else I can scan the wiring list when I get back to the shop. sb On 12/30/06, ai4sb [EMAIL PROTECTED] wrote: Hello and thanks for reading!! ok, I have a motorola mitrek UHF converted to the ham band. I have the control cable attach and I attach a local speaker to the green and orange wires then I apply power... I should be able to hear the squelch/noise and hear myself in the speaker, but that is my problem, I do not hear anything nothing is comming out,, my question is how do I start troubleshooting this to find out what is wrong and how to fix this??? Any help is appreciated Happy New Year Miguel, ai4sb Yahoo! Groups Links -- Ham Radio Spoken Here.NU5D
Re: [Repeater-Builder] Re: 6M cans still wanted in UK
Those High $ Wacom duplexers were made from aluminum irrigation pipe that was cadmium and silver plated. The tuning rods were invar. One of the most difficult items was mechanical stability of the crown at the top of the cavity. Wonder if there is some plumbing supplies that may be used to fabricate cavities? As far as expense - there seem to be some give and take - Our healthcare costs here in the states are pretty scarry. Merry Christmas, sb On 12/25/06, Steve [EMAIL PROTECTED] wrote: Hi Barry yes, problem is I don't have any workshop/machine shop facilities. If I had things like lathes, drilling machines etc then maybe, but bear in mind things in the UK are far -- Ham Radio Spoken Here.NU5D
Re: [Repeater-Builder] Re: [Motorola-Metrum-Motrac-Motran-Mocom] Kellogg's FCC Sign Pact
Gentlemen, does this promote our hobby? Steve NU5D On 12/17/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: ... forwarded ... ;) - Original Message - From: Dave [EMAIL PROTECTED] Date: Sunday, December 17, 2006 10:00 am Subject: [Motorola-Metrum-Motrac-Motran-Mocom] Kellogg's FCC Sign Pact Washington D.C.- It was announced today that Kellogg's and the Federal Communications Commission have signed a pact to issue Amateur Radio Licenses on specially marked boxes of Corn Flakes. In this unprecedented move the FCC believes this will not hurt amateur radio but allow all individuals to receive an amateur radio license without having to demonstrate any skills with the exception of being able to use a pair of scissors to cut out their operating permit from the breakfast cereal box. Kellogg's spokesperson commented that they were proud to have been selected by the government to be the issuer of licenses for amateur radio in the US and hope to soon make an agreement with other cereal loving countries. They also expect that will be issuing certificates of achievement for DXCF for confirmed contacts with 100 corn flakers. Yahoo! Groups Links -- Ham Radio Spoken Here.NU5D
Re: [Repeater-Builder] Re: DC INJECTOR AND PREAMP
How about a metal equipment enclosure or outdoor cabinet? Trying to split the send and receive, preamp the receive, and then recombine the two is possible, but in my humble opinion, not very practical. How tall is the mast, and how much of the run is from the shelter to the mast? Another more practical approach might be to place the receiver and duplexer at the base of the mast, and run receive audio and RUS back to the shelter, and have tx output and DC power for the receive go from the shelter to the base of the tower. I still think an outdoor cabinet and running AC power in a conduit or SO cable as used in tower lighting would be the easiest way to cut your losses. Best 73, Steve NU5D On 6/4/06, dan ryant [EMAIL PROTECTED] wrote: the problem with moving the repeater is that there isn't any buildings near the mast, and building one would pretty much be out of the question due to the cost involved and the slope of the hill that the tower is on. Not to mention the trees that would have to be cut down and the permits required. I am trying to find a DC injector that will power a preamp which can bypass for an output amplifier. This is my thought. Please correct me if I'm wrong. From the GM400 I run to the duplexer at 25 watts. then, from the output of the duplexer to the antenna, I connect a dc injector, then I connect the amplifier for the output power of 150 watts. On the mast I connect a preamp with RF out bypass and YEE HAA, I have a repeater it that right? Can a dc injector be added before or after an amp? My uneducated guess on the final output power on a 350' run of coax will be about 18.75 watts out. A 20 db preamp connected to a 6db gain antenna would be 1.625db at the repeater. Is that about right? Again, any help would be appreciated. Thanks ps. any manufacture information or models that I should look at would be more than welcome. Price is a factor, but the budget allows for some reasonable expenses knowing that the cost of the building being built would cost several hundreds to a thousand or more. Thanks again Dan skipp025 [EMAIL PROTECTED] wrote: Don't know if I'd trust the remote ac power option in some cases. The cable would have to be underground and/or well protected above ground... Plain Romex would scare me and make an insurance carrier even more nervous. cheers, skipp Steve Bosshard (NU5D) wrote: Why not use outdoor romex cable to extend AC power, and move the repeater closer to the antenna - loss would then be in the AC power line, and not in the transmission line. Assumes you can find a suitable and secure outdoor enclosure Steve NU5D On 5/30/06, skipp025 wrote: The common answer is probably no... you can't run a remote preamp as described in your post. There is always a but There is a yes answer, but it takes quite a bit of hardware, which doesn't seem practical except in very special cases. It's a hardware layout of an rf tower mounted rx preamp diplex filtered with tx path signal hardware, but you would really have to know the costs and performance trades for buying and using one. It would be more practical to remote locate the repeater in a small weather proof box closer to the antenna. The best bang for your buck would be to invest in some really good hard line for the long feedline run. 1-5/8 hard line is cheap on the surplus market right now... cheers, skipp danryant wrote: I am using a pair of GM300 radios hooked up to a duplexer andgetting a repeater controller. The problem that I am having is the 250' run of coax to get from the shack to the antenna. My question is this. Can a preamp and dc injector be used when the antenna it is hookup up to is both the tx and the rx antenna? I am going to be running a amp for tx power as well. (100 watt) My understanding is that I will be down to about 12.5 watts at the antenna on the tx side. Is this correct math? Thanks again for your help and continued support for those of us who are not radio literate. Yahoo! Groups Links -- Ham Radio Spoken Here.NU5D Yahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ __Do You Yahoo!?Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com YAHOO! GROUPS LINKS Visit your group Repeater-Builder on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. -- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups
Re: [Repeater-Builder] Qustion I Have
Well Lets see, 4 Watts = +6.02 dBw, plus 5.0 dB of Gain in the antenna for +11.02, minus coax loss, lets guestimate 1.5 dB and connector / adaptor loss of 0.5 dB would put you at +9.02 dBw, or 7.98 Watts ERP - just shy of 8 Watts. Since you are using a simplexor there is no duplexer loss. If you want to be really tricky use split tones, one encode and a different decode and folks won't hear the initial call if they use decode on their radios. Steve NU5D On 6/4/06, National Emergency Assistance Radio Team Headquters [EMAIL PROTECTED] wrote: Date:06-04-2006Time:12:00 Noon 1700 UTCTo:[EMAIL PROTECTED] From:Lige Turner KAF-2106I Have A QustionRight Now We Have Setup AUHF-FM Maxon 210+3 GMRS HT RadioHuck Up To A Radio Shack 19-345Simplax Repeter And The AntennaA UHF-FM Maxrad 5 Db Gain Antenna My Qustion Is The Tranmitter PutsOut 4 Watts And The Antenna Is A5 dB Gain Maxrad I Figer That TheTranmitter And The Maxrad AntennaI,M Puting Out About 25 Watts ERPWould That Sound About Right Lige Turner KAF-2106Yahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/-- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: Wount To Find Out About Buiding A New Repeter
Specs for a Decibel Products DB420 Antenna. www.repeater-builder.com/db/db-420-data-sheet.pdf PS - Nice job on sys gain and losses, N3DAB. Very good explanation. Some useful formulae: Power gain = 10 * LOG (power in / power out) (if in and out are reversed the result will be a negative number instead of pos, or vice versa). Also. For a starting point. 1 Watt in a 50 Ohm circuit = 0.0 dBW. To convert from Watts, to dB referenced to 1 Watt. 10 watts = 10 LOG (10/1) = +10.0 dBW , and 50 watts = 10 LOG (50/1) = +16.9 dBW , and 100 watts = 10 LOG (100/1) = +20 dBw To convert from dBm (1 milliwatt 50 Ohm Reference point) to dBW, substract 30 dB. ie, +30 dBm = 1 Watt = 0 dBW. Nice thing about working in dB is that you add gains and substract losses, then convert back to watts for ERP which can be stated in Watts or dBW. Steve NU5D On 5/31/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: I question that 9.2 dB antenna, is it actually 9.2 dBd or 9.2dBi ??Neil - WA6KLA Original Message From: [EMAIL PROTECTED]To: Repeater-Builder@yahoogroups.comSubject: RE: [Repeater-Builder] Re: Wount To Find Out About Buiding A New RepeterDate: Wed, 31 May 2006 14:36:47 -Jim,First add all the System Gains (SG)in dbW measurements, from thatfigure you then subtract all your Sytem Losses (SL)in dbW, the result -- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Winegard TV pre-amps
Our local Medical Center, Scott and White Memorial has an RV park, and a Med 8 duplex base station, that uses 5 key clicks to operate a telephone patch to the ER Department.At times an interfering signal would cause the patch to go wild. We traced it down to the RV area and suspected an active TV antenna to be the culprit. I do not know first hand what brand caused the problem, but it seems like there were some articles pointing to Winegard. Steve NU5DOn 5/29/06, Adam Vazquez Kb2jpd [EMAIL PROTECTED] wrote: JOHN MACKEY wrote: It seems to me that this group has had discussions before about Winegard TV pre-amps causing wide-band RF noise.Does anyone know if there is a good model of TV pre-amp that works for the job intended but does not cause the RF noise? thanksTry Motorola. They are built.Adam Kb2JpdYahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/ -- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Double the gain or double the power?
#1 Go for Height. #2 Go for antenna gain (helps Receive and Transmit) #3 Power - probably should not have much more erp than the users will have talking back... Height is great up to a point. Once you get past 400 to 500 feet, the horizon doesn't get much further out without a substantial increase. Antenna gain helps both RX and TX, but be sure the pattern and location of the antenna works for the desired coverage area. Lots of coverage over a lake might not serve many folks...A very high gain antenna may hurt close in (particularly in building) coverage while directing more signal 15 miles out My 2 Cents, Steve NU5D On 5/29/06, atms169 [EMAIL PROTECTED] wrote: Easy question for all other repeater owners.What should I do?I have a pair of folded looped-dipole antenna's for my repeater which pushes 42 Watts.Once I add the antenna and duplexers I get 25 Wattsoutput.The antenna has 4 looped-dipole antenna's with phasingharness but I only use one set.So what should I do, should I continue using the 1 set of looped-dipole antenna's at 25 Watts or do I add the second pair oflooped-dipole antenna's and push only 10 Watts out on the repeater (Asthere will be a loss).Which would be better?I am sure I am doubling the gain for PEP. Would I have a better receive on the antenna as well?Would it reallymake it stronger?AaronVA6AEYahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ -- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Double the gain or double the power?
Depending on the degree of coupling, at VHF, the loss in 2, 8 cavities will be around 1.5 dB., send or receive. 10 LOG 25/42 comes to around 2.25 dB. A little on the high side. I don't understand where adding the remaining 2 elements to a 4 element antenna will change the loss. Seems the repeater delivers 42 Watts. The Duplexer adds 2.25 db of loss. A 2 loop antenna will have around 3 dB of gain, and a 4 loop antenna should have around 6 dB. of gain. Adding the second 2 loops should help the send and receive by around 3 dB. I am making the assumption that you are now using the top half of a 4 element antenna, and you plan to re-connect the bottom half? Steve NU5D On 5/30/06, KB6ZOP [EMAIL PROTECTED] wrote: That seems like a LOT of loss... Have you had the cans and antenna(s)tuned?-Original Message- From: Repeater-Builder@yahoogroups.com[mailto:Repeater-Builder@yahoogroups.com] On Behalf Of atms169Sent: Monday, May 29, 2006 9:46 AM To: Repeater-Builder@yahoogroups.comSubject: [Repeater-Builder] Double the gain or double the power?Easy question for all other repeater owners.What should I do? I have a pair of folded looped-dipole antenna's for my repeater whichpushes 42 Watts.Once I add the antenna and duplexers I get 25 Wattsoutput.The antenna has 4 looped-dipole antenna's with phasing harness but I only use one set.So what should I do, should I continue using the 1 set oflooped-dipole antenna's at 25 Watts or do I add the second pair oflooped-dipole antenna's and push only 10 Watts out on the repeater (As there will be a loss).Which would be better?I am sure I am doubling the gain for PEP.Would I have a better receive on the antenna as well?Would it reallymake it stronger?AaronVA6AE Yahoo! Groups LinksYahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/-- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: DC INJECTOR AND PREAMP
Why not use outdoor romex cable to extend AC power, and move the repeater closer to the antenna - loss would then be in the AC power line, and not in the transmission line. Assumes you can find a suitable and secure outdoor enclosure Steve NU5D On 5/30/06, skipp025 [EMAIL PROTECTED] wrote: The common answer is probably no... you can't run a remotepreamp as described in your post.There is always a but There is a yes answer, but it takes quite a bit of hardware,which doesn't seem practical except in very special cases. It'sa hardware layout of an rf tower mounted rx preamp diplexfiltered with tx path signal hardware, but you would really have to know the costs and performance trades for buying andusing one.It would be more practical to remote locate the repeater ina small weather proof box closer to the antenna.The best bang for your buck would be to invest in some really good hard line for the long feedline run.1-5/8 hard line ischeap on the surplus market right now...cheers,skipp danryant [EMAIL PROTECTED] wrote: I am using a pair of GM300 radios hooked up to a duplexer and getting a repeater controller.The problem that I am having is the 250' run of coax to get from the shack to the antenna. My question is this. Can a preamp and dc injector be used when the antenna it is hookup up to is both the tx and the rx antenna?I am going to be running a amp for tx power as well.(100 watt)My understanding is that I will be down to about 12.5 watts at the antenna on the tx side.Is this correct math? Thanks again for your help and continued support for those of us who are not radio literate.Yahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/-- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: Double the gain or double the power?
The power should not have changed.I suspect you incur an antenna problem when u add the second half, causing some reflected power causing the repeater to start shutting back. Wonder what the forward and reflected power are, before and after? I am not sure about a 3 way connectorA DB Products Model 224 has a splice in the middle, and feed point at the bottom. Might be worth while the double check the antenna and be sure the harness hasn't been tinkered with... Steve NU5DOn 5/30/06, atms169 [EMAIL PROTECTED] wrote: Yes, I was using the Top Half of a 4-element antenna.I have nowadded the 3-Way connector and now have the entire antenna connected.I have noticed it has cleaned up the receive on week stations but, itseems to have dropped a little in the signal. System was just re-tuned, duplexers and radios.It's a MotorolaMSR-2000 Canadian 40 Watt version.When I add the duplexers and thetop half of the antenna I get 25 Watts out.When I add the secondhalf I get 10 Watts out.Measuring the wattage just after the duplexers. I guess we will see how well it works?The antenna is somewhat at a good height.It's on a 55' tower on ahill overlooking the City.I wish it was a little higher however,that is not possible at this time. ThanksAaronVA6AE--- In Repeater-Builder@yahoogroups.com, Steve Bosshard (NU5D)[EMAIL PROTECTED] wrote: Depending on the degree of coupling, at VHF, the loss in 2, 8 cavities will be around 1.5 dB., send or receive.10 LOG 25/42 comes to around2.25 dB. A little on the high side.I don't understand where adding theremaining 2 elements to a 4 element antenna will change the loss. Seems the repeater delivers 42 Watts.The Duplexer adds 2.25 db ofloss.A 2 loop antenna will have around 3 dB of gain, and a 4 loop antennashould have around 6 dB. of gain.Adding the second 2 loops should help the send and receive by around 3 dB. I am making the assumption that you are now using the top half of a 4 element antenna, and you plan to re-connect the bottom half? Steve NU5D On 5/30/06, KB6ZOP [EMAIL PROTECTED] wrote: That seems like a LOT of loss... Have you had the cans and antenna(s) tuned? -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com] On Behalf Of atms169 Sent: Monday, May 29, 2006 9:46 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Double the gain or double the power? Easy question for all other repeater owners.What should I do? I have a pair of folded looped-dipole antenna's for my repeater which pushes 42 Watts.Once I add the antenna and duplexers I get 25 Watts output.The antenna has 4 looped-dipole antenna's with phasing harness but I only use one set. So what should I do, should I continue using the 1 set of looped-dipole antenna's at 25 Watts or do I add the second pair of looped-dipole antenna's and push only 10 Watts out on the repeater (As there will be a loss). Which would be better?I am sure I am doubling the gain for PEP. Would I have a better receive on the antenna as well?Would it really make it stronger? Aaron VA6AEYahoo! Groups Links Yahoo! Groups Links -- Ham Radio Spoken Here.NU5DYahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/ -- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] OT Need a GE Master Series Key
If the station is in a stand up cabinet with hinges on the door, simply press upward on the pin on the bottom hinge, and the door will come un-hinged (works for GE and Moto Micor series at least). Else BF10A, or 1000GE Key - maybe one of the local folks will spare you one - I have seen camper shells and truck tool boxes use the same as BF10A or CH751 (common moto key). GL, Steve On 5/17/06, tgundo2003 [EMAIL PROTECTED] wrote: Hi All!I am working on a radio system for a local guy and his base station isa GE master seris model DI76EAU66A. The paperwork says its an 80 watt chassis, and its VHF. I need to get in to it to check things out (andblow out 30 years of dust) but were in moto country and I dont have anyGE keys! Any one out there who can help before I get the drill? Thanks!!TomW9SRVYahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/-- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Need a GE Key
I couldn't resist this one, so please don't take this as nit picking, but for a purist, the BF10 fits the TPL, Transistorized Progress Line, and the BF10A fits the DM Desk Mate and MastrPRO, and MII Mobiles. The 1000GE is for the 69 Cabinets. Such is true most of the time, but there are exceptions. We could start a thread on Keys, MRCA, LL201, CH751, PA238, and what did that little Harris mobile use 73, Steve On 5/18/06, TGundo 2003 [EMAIL PROTECTED] wrote: The cabinet in question is only about 3 ft tall. [EMAIL PROTECTED] wrote: Ummm.. IIRC, isn't DI a Desk-mate (shorty) cabinet ?? Should take a BF10 /. -- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Wilson UHF Citi-com repeater
Pretty sure it is the same as some of the Regency repeaters. Is this one abt 6 tall in an aluminum mesh enclosure, or is it made for rack mounting and abt 3 1/2 tall. If so I have scanned by manual for the 3 1/2 tall one, and will be glad to post. Steve NU5D On 5/12/06, Daron J. Wilson [EMAIL PROTECTED] wrote: Looking for a manual on a Wilson UHF Citi-com WU-451-RA repeater.Will payfor copies, etc. if someone has one on the shelf. Thanks,Daron Wilson N7HQRYahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/-- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] GE Mastr IIe
ZETRON has applications notes for their community repeater panels. I have used these to interface other controllers to M2e, M3 Stations.Steve NU5DOn 5/10/06, Andrew [EMAIL PROTECTED] wrote: Hello again,Does anyone have the info on how to interface a GE Mastr IIeStation to an external controller? I am going from the IIe Station -a Arcom RC-210 controller. TIA for any help.Andy KC2GOW Yahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to:[EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/-- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] GE Mastr IIe
Seems like I called and they faxed a copy to me. Will scan and post 2 morrow morning.SteveOn 5/10/06, Joe [EMAIL PROTECTED] wrote:Is this available on the web?I looked on the Zetron site and couldn't find the notes.JoeAt 07:20 PM 5/10/2006 -0500, you wrote:ZETRON has applications notes for their community repeater panels.I haveused these to interface other controllers to M2e, M3 Stations. Steve NU5DYahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to:[EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/-- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: Strange Repeater Problem
I remember PC's radiating a very strong signal at 462.000 - was really noticable at a local hospital. ssbOn 5/8/06, atms169 [EMAIL PROTECTED] wrote:--- In Repeater-Builder@yahoogroups.com, Bob Dengler [EMAIL PROTECTED] wrote: At 5/4/2006 08:38 AM, you wrote: I hope someone can shed some light on this? If I have my repeater at home it works with 30 Watts out now problem. When I bring it back to the repeater site I have to lower it to 5-10 Watts because I get RF feedback to the radio.It just soundslike the squelch is always open. Motorola Mitrek modified for duplex Coax is the same at both locations, LMR400 Antenna is the only thing that is different, using a fiberglass Alpha If the repeater site is shared, there's lots of otherequipment/antennas up there as well.Any switching power supplies, video cameras or TV transmitters at the site? Bob NO6BThe repeater site is not shared. I have now tried everything Ipossibly could think of.I replaced the coax from the duplexer to theradio, encased the radio in a thick metal box, replaced coax, replaced antenna.Still the same thing.So I am led to believe that therepeater site itself is receiving some sort of interferance?Yahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/ -- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Uniden ARU251 Repeater
Two things come to mind. First, it could be counting a spur - this might get past a notch duplexer - How is performance - if there is much power in a spur it should be working pretty poorly.Second, are you using a talkie to key the repeater - combination of two signals might cause the counter to go nuts. The key would be if the performance is really poor.gl, steve nu5d5/6/06, bama_guy1965 [EMAIL PROTECTED] wrote: Im having trouble getting my repeater to stay on frequency I was wondering if it may be the crystal or has the duplexer been tunedwrong it was professionally done supposedly the frequency is 462.550and it shows up on freq counteras 465.5456 can somebody offer any -- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Ericsson Mastr IIe
Seems like the M3 bat file starts mastr.exe / M3 or something like that. Pretty sure if you have M3 software and change the bat or just launch and read you will be ok.steve nu5d On 5/7/06, Terry Stewardson [EMAIL PROTECTED] wrote: Can anyone help me locate a place to buy or obtain the software to program the eeprom on the self unit of these repeaters. Just pickup 4 of these 100 watts repeaters and can't seem to locate where to obtain the program. Or if anyone knows the were abouts of locating the utility handset that could program these. Terry Stewardson VA3LU YAHOO! GROUPS LINKS Visit your group Repeater-Builder on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service . -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.392 / Virus Database: 268.5.5/333 - Release Date: 5/5/2006 -- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: Uniden ARU251 Repeater
Yeah, 5 kc off will make it sound kinda funky, and I don't have GMRS rules in front of me but may also be out of legal tolerance. If you are sure your counter is accurate (ck against a know to to correct source), then set the trimmer in the TX module, or see if the shop that tuned it up for you will help - pretty minor thing. If you have new crystals, there may also be a drift problem with the crystals, also, the receive may be off as well. ssb On 5/7/06, bama_guy1965 [EMAIL PROTECTED] wrote: well in response I put the wrong frequency it is 462.550 that itshould be output but it is 5kc off at 462.5456 if that makes anydifference I know its driving me nuts and I keyed it off therepeater itself to get a true reading anymore suggestions would be -- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Mastr III HB station
I would very strongly (almost to caps) recommend you use the built in controller inherent in the M3. You get hang time, time out timer, dtmf on/off, and morse id just by programming. We have had one in service , W5LM for 6 or 7 years with one PA driver module failure. Best luck, Steve NU5D On 5/7/06, Kevin Berlen, K9HX [EMAIL PROTECTED] wrote: Our club has located a surplus Mastr III base station,and I am looking for info on interfacing an external controller to it. TIA and 73,Kevin, K9HXYahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/-- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Mastr III HB station
But, if you just have to do it. Contact Zetron for their wiring list to connect their out board multi tone repeater controller. Also you will find the CG decoder gets talked down by HAM talkies, most do not filter audio below 300 hz, and that with excessive deviation will talk down the GE decoder. There is a software flash code that will fix this problem, until you reprogram the repeater, then you will need to flash it again. ssb On 5/7/06, Steve Bosshard (NU5D) [EMAIL PROTECTED] wrote: I would very strongly (almost to caps) recommend you use the built in controller inherent in the M3. You get hang time, time out timer, dtmf on/off, and morse id just by programming. We have had one in service , W5LM for 6 or 7 years with one PA driver module failure. Best luck, Steve NU5D On 5/7/06, Kevin Berlen, K9HX [EMAIL PROTECTED] wrote: Our club has located a surplus Mastr III base station,and I am looking for info on interfacing an external controller to it. TIA and 73,Kevin, K9HXYahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ -- Ham Radio Spoken Here.NU5D -- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] scanner interference
Years ago I installed a phone patch on a MED 8 duplex base station that was carrier squelch. I set the patch up for 5 Key Clicks to activate the auto dialer into the ER. Some patient on the 8th floor had a scanner and the LO while scanning ran across the 468.0 input. Liked to drive the ER folks crazy til we tighened the squelch. Channel Guard came later on, but for a while, between scanners, and also Winegard TV active antennas in the RV park at the hospital, we had some interesting interference problems. Steve On 5/3/06, Paul N1BUG [EMAIL PROTECTED] wrote: So how can a scanner interfere with a repeater? I'm probably missing something basic but thought I'd ask anyhow. -- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] Semi-Rigid Coaxial Transmisson Line.
There is a formula in most hand books where the characteristic impedance can be determined from the inner diameter of the shield and the outer diameter of the center conductor. I have built many makeshift connectors using an UHF barrel, PL258, and slotting the outer conductor of the cable with a hacksaw, then driving the barrel over the center, applying passivating compound, and using a hose clamp to secure the shield to the barrel connector. I have used UHF barrels on 1/2 and 3/4 lines with good success. Also there is not a whole lot of difference between 50 and 75 ohm cable. Also, for a given diameter, the loss is pretty much the same with some difference due to dielectric losses. Steve -- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] http://www.cebik.com/trans/spcoax.html - Coax Info
http://www.cebik.com/trans/spcoax.html-- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Two CTCSS Tones out of One TX
I did run 162.2 and 192.8 on a HT90 and it did work with a Micor and M Pro receiver on the station end. Newer digital tone decoders will not work because the agregate of the two tones will cause the tone to look like the sum of the two, but it will excite a decoder reed, or frequency selective decoder. The tones were not distorted and not noticable in the AF pass band. Steve NU5D On 4/21/06, Bob M. [EMAIL PROTECTED] wrote: You will likely end up with an audible sound by usingtwo signals at the same time. Let's say you use 77.0Hz and 192.8 Hz. These are unrelated but you willstill get the sum and difference frequencies coming out, which would give you around 115 Hz and 269 Hz.You might hear the one at 269. If you used two signalsthat were much closer, you could hear a slow beatnote.Also, depending on the kind of decoders you use, they may not be happy seeing another sub-audible tonepresent along with the desired one.After saying this, I bet someone will come along andtell you that it will work, and how to do it!Bob M.== --- Kevin Natalia Mitchell [EMAIL PROTECTED]wrote: Hi All, I am wanting to use one TX from our repeater site, to link to two link RX's, these are on opposite sides of the repeater. I was thinking about having two different CTCSS tones, one for each, and then having the TX generate the two tones together. This way I can use one freq., but still have some form of control over the links by switching either, or both CTCSS tones off/on as required. Any ideas, or comments on this setup would be helpful Regards Kev.__ Do You Yahoo!?Tired of spam?Yahoo! Mail has the best spam protection aroundhttp://mail.yahoo.comYahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/ -- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Virus Warning
Would that make it an STD:?ssbOn 4/16/06, k4lch [EMAIL PROTECTED] wrote: The post from kuggie contains a virus program not a sex video-- Ham Radio Spoken Here.NU5D YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Frequency Spacing?
There is a magic number where the output of one repeater will not bother the input of the other and vice versa. I would want the two repeaters to be as close as possible to each other's frequency. You can use ONE duplexer for both repeaters if they are very close to each other, say less than 75 khz or so. Use a hybrid combiner and isolators to combine the two close spaced transmitters, and a receiver pre-amp / splitter to feed the two receivers. I have 3 repeaters in 460 using one duplexer with a cavity combiner, and receiver preamp / splitter combination. The repeaters are within a 150 khz window and the system works well. The repeaters are 110 Watt Johnson VX series running narrow band FM. Steve NU5D On 4/5/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: At 4/5/2006 07:27, you wrote:How close, frequency spacing wise, can a couple of VHF (2 meter) repeaters in the same equipment room on the same short tower be made to work wellwithout much trouble or extra expense? How does 45 Kc. with same 600 Kc.offset sound? What will work this close and what won't? If the offset is the same, closer is actually better since the duplexer ofeach repeater will protect each RX from both TXs, both in RX notching of TX TX noise suppression at the RX freq.However, isolators on both TXs are a MUST, otherwise you will 2A-B mix in both TXs end up TXing 45 kHz above below your two outputs.Try to keep the two antennas as far apart aspossible.If you can't separate the antennas much, you might need dual isolators on both TXs.I've seen two TXs 20 kHz apart at the same site mixstrong enough to be heard 10 miles away, even though both systems hadsingle isolators.When dealing with close-freq. TX spacing, equipment shielding seems to be more important for some reason.Stay away from converted mobiles asrepeaters, or plan on using a separate RX in an RF-tight box with EMIfeedthroughs.Bob NO6BYahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/-- DE NU5D - Promote Amateur Radio YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] LMR coax
I have had good luck, except the LMR400 / similar to 9913 is prone to center conductor (copper clad solid aluminum) breaking if it gets too much flexing. ssbOn 4/2/06, Mike Perryman K5JMP [EMAIL PROTECTED] wrote: Tim,The only issue I have had is that if you get any moisture between the braidand foil shield..you will soon have the million diode marching bandserenading your receiver in a duplex environment.It happened to a guy just South of here when a hunk was used in a duplexer harness a while back.Replaced the jumper and all was well again...Also the braid is aluminum, so it is pretty fragile to any twisting etcwhere it attaches to a connector.Also makes it somewhat difficult to solder to.Use the crimp-on style connectors from www.Fab-Corp.com andprovide some kind of stress relief to the connector.Try not to nick thecenter conductor when you strip it back as it is copper-clad aluminum. I a simplex environment...I love it!OT--Anybody going to play in the 2m sprint tonight?73MikeK5JMPwww.k5jmp.us-Original Message- From: Repeater-Builder@yahoogroups.com[mailto:Repeater-Builder@yahoogroups.com]On Behalf Of Tim and Janet CampbellSent: Saturday, April 01, 2006 10:06 PMTo: Repeater-Builder@yahoogroups.comSubject: [Repeater-Builder] LMR coaxRecently there were some negative comments about the LMR coax.I have not used it before but was curious what problems others may have encounteredwhile using it.Tim KB2MFSYahoo! Groups Links Yahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/-- DE NU5D - Promote Amateur Radio YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: LMR coax
Hello Skipp,I would be really interested in knowing with say 10 watts going into the cable, how much reaches a dummy load at the far end. I have never had any loss issues with LMR400, other than breaking the center conductor. I have bunches of LMR500 and 600 with no trouble. Above 600, it makes more sense to use LDF5-50 7/8 Andrew cable. I have various LMR cables in place from HF to 1296 (on 1296 they are short jumpers from the main line into the station). Steve NU5DOn 4/2/06, skipp025 [EMAIL PROTECTED] wrote: If you email or contact my (rotten to the core :-) friend-- DE NU5D - Promote Amateur Radio YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Updated web site.
Hello Frank,Nice site with lots of stuff. Put a link under Guestbook to make it easier to find and sign in.. Also, the dark background with dark print makes it a little difficult to read.Thanks for all the hard work that went into it. 73,SteveNU5DOn 3/28/06, frankipmc [EMAIL PROTECTED] wrote: Hi everyone, I updated my site at http://www.n6aq.com if you have sometime stop by and let me know what you think.Frank N6AQwww.n6aq.com Yahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to:[EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/-- DE NU5D - Promote Amateur Radio YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Fiberglass antenna protective coating?
Seems like I have used an epoxy resin with a hardener to seal fiberglass radomes. I have had some that were pretty ragged, and had to hand sand the loose fibers, then apply epoxy resin. Seems like the working time was something like 30 minutes before the epoxy began to set. I have had several of these re-habed antennas up for over 5 years. SteveNU5DOn 3/22/06, na6df [EMAIL PROTECTED] wrote: I have a shiny new Antennex FG1440 2 meter repeater antenna, and Ithought that before we install it on the tower, maybe I should put anadditional protective coating on over the fiberglass. Looking forsomething that would not get brittle and crack off any time soon. Any ideas? Urethane maybe? I once used some urethane designed as a marinefinish with great results, but I'm open to suggestions..Thanks,dave na6dfYahoo! Groups Links * To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/-- DE NU5D - Promote Amateur Radio YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Switching PL on and of on a TS-32
Seems like there is a control line on the ts32 board audio buffer that can be tied to detect line to gate audio.On 3/19/06, John J. Riddell [EMAIL PROTECTED] wrote:I had a similar problem here and I put a relay on the audio line that shorts theaudio outputwhen COS drops.works great.John VE3AMZ- Original Message -From: Jim Cicirello [EMAIL PROTECTED]To: Repeater-Builder@yahoogroups.comSent: Sunday, March 19, 2006 4:13 PMSubject: RE: [Repeater-Builder] Switching PL on and of on a TS-32 I had a similar problem when my TS-32, only mine made a noise when the PL first was switched on. I also wanted the PL to follow the CAS so there was no PL on the repeater tail. I turned my TS-32 on all the time and switched the CTCSS in and out with a 2n Transistor driving a Mini Relay. It works great. Good Luck.KA2AJHJimWellsville, NY Jim KA2AJHWellsville, N.Y. -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com] On Behalf Of Joe Sent: Sunday, March 19, 2006 2:13 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Switching PL on and of on a TS-32 I decided to try the method someone suggested for keying the repeater transmitter encode PL on and off with active COS.I switched the ground connection on and off to key the TS-32 PL deck.This works, except that when the tone turns off I get a sound that is best described as squeege as it shuts off.I assume this is the oscillator loosing voltage and the tone changing frequency.Anybody else have this problem?I'm about to just go back to switching the PL audio line and leaving the TS-32 on all the time.. 73, Joe, K1ike Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to:[EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/-- DE NU5D - Promote Amateur Radio YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Switching PL on and of on a TS-32
I once wired a diode to one of the switch positions to CHANGE the tone during COS - similar to reverse burst, except now a totally different tone - made the receivers quench nicely.Steve NU5D On 3/19/06, Chuck Kelsey [EMAIL PROTECTED] wrote: That's what I do -- gate the audio line. I usually use a 4066. Becareful on the levels because the 4066 can cause distortion if hit toohard. Some controllers will gate it for you, but not sure what ones do(LinkCom doesn't). ChuckWB2EDVJoe wrote: I decided to try the method someone suggested for keying the repeater transmitter encode PL on and off with active COS.I switched the ground connection on and off to key the TS-32 PL deck.This works, except that when the tone turns off I get a sound that is best described as squeege as it shuts off.I assume this is the oscillator loosing voltage and the tone changing frequency.Anybody else have this problem?I'm about to just go back to switching the PL audio line and leaving the TS-32 on all the time.. 73, Joe, K1ike Yahoo! Groups Links Yahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to:[EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/-- DE NU5D - Promote Amateur Radio YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Can anyone identify this?
I remember a Micor station with the big ribbon cable - will look and see if I still have manual - Seems like there was a unified chassis and a split chassis. Steve NU5DOn 3/17/06, Rick Stirling [EMAIL PROTECTED] wrote: We have a repeater given to our club. It is more or less in workingcondition on the 2 meter band. Trouble is there is no controller orid-er, etc.http://www.rickster.org/pics/unknown.jpg I've been told it is a Compa-Station but I haven't been able tocorrelate this backplane any of the pictures on repeater-builder.Any clues would be appreciated. I'm planing on installing a CommSpec CTCSS TS64DS decoder and the NHRC-4 controller.73,Rick AE7RSYahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to:[EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/-- DE NU5D - Promote Amateur Radio YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: EEproms Phoenix Radios
Sure thing - send working eeproms and I will re-zapp.Bosshard Radio ServiceATTN: Steve503 B. South 25th. StreetTemple, Texas 76543On 3/17/06, hl31943 [EMAIL PROTECTED] wrote: Is that an open-ended invitation? I have a couple of 2 channelPhoenixs that I'd like re-zapped on one of the channels.HowardWB4GUD--- In Repeater-Builder@yahoogroups.com , Steve Bosshard (NU5D)[EMAIL PROTECTED] wrote: I have a Niles box for 2214 parallel eeproms, or there is anotherbox that handles both the 2214 and the 9346? serial eeprom.If you want to send the eeprom I will be glad to reprogram and return it. Steve NU5D On 3/16/06, bazelljr [EMAIL PROTECTED] wrote: Has Anyone come up with a method of Programming Phoenix Radios without the Suitcase Programming Unit? Wesley AB8KD Yahoo! Groups Links -- DE NU5D - Promote Amateur RadioYahoo! Groups Links * To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/-- DE NU5D - Promote Amateur Radio YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Info Needed: Lunar Electronics model # PAC 800 preamp
http://www.qsl.net/va3rr/lunar80p/lunar80P.html See if this helps, Mark. PS - tnx fer the help on the MLS1 - Now if I could get my VHF Orion into 2M band.Steve On 3/3/06, Mark Cobbeldick [EMAIL PROTECTED] wrote: Lunar Electronics model # PAC 800 preampDoes anyone have any info on the above preamp or know where I can download data?Thank you in advance,Mark C. KB4CVNYahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/-- DE NU5D - Promote Amateur Radio YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] MLS1 GE
I was thinking the MLS2 used a pc and serial cable and the MLS1 used a suitcase. Will either go to 52.525? ssb On 2/24/06, mch [EMAIL PROTECTED] wrote: It can also be programmed with a PC. That's how I do it. Joe M. Eric Lemmon wrote: Steve, I have a GE MLS (aka MLS 1, once the MLS II came out) radio, and it has a PROM that must be programmed on a PROM burner. It does not use an EEPROM, so each change requires a new PROM. 73, Eric Lemmon WB6FLY Yahoo! Groups Links -- DE NU5D - Promote Amateur Radio Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Uniden SMH 400G
Scott, Ever run into Larry Temenoff there? Met him at Magnavox while doing microwave contract work with Loral Terracom - think his call is KB9OS. May be in Auburn now. Steve NU5D formerly N5OEM and KA5AMI. On 2/25/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: I have an AMX-500c programmer here... Maybe I can help? Scott ka9sln Fort Wayne in IRLP 8380 Yahoo! Groups Links -- Forwarded message -- From: drwoolweaver [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Date: Sat, 25 Feb 2006 02:09:08 - Subject: [Repeater-Builder] Uniden SMH 400G Does anyone have a programmer for a SMH 400G? Thanks de David Yahoo! Groups Links -- DE NU5D - Promote Amateur Radio Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] MastrIII part needed
I am very sorry. New London Technology would be my next stop. How about the power supply and the rest of the modules in the shelf? Same condition? Steve NU5D. On 2/25/06, Larry Williams [EMAIL PROTECTED] wrote: Well, it kinda sat submerged in nasty water for a few weeks after hurricane katrina. I'm not sure, but I don't think doing a reset will hel much at this time. Thanks anyway, though. If I could even get a non functioning board that is not corroded the way this one is, I can probably fix it. Larry KE4PCZ Message: 7 Date: Fri, 24 Feb 2006 14:56:38 -0600 From: Steve Bosshard (NU5D) [EMAIL PROTECTED] Subject: Re: MastrIII part needed Larry, Is the module destroyed? Seems like these are in the $2K price range. They can be repaired, and I have resurected a non functioning one doing a reset. What is the nature of your failure? Steve NU5D On 2/24/06, Larry Williams [EMAIL PROTECTED] wrote: Hello, looking for a system control module p/n 19D902590G3 or G6 Anyone have one reasonable?? Larry Williams KE4PCZ [EMAIL PROTECTED] Yahoo! Groups Links -- DE NU5D - Promote Amateur Radio Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Micor 375 Watt TLD5082 question?
Does the 40 Watt exciter make on frequency power? Was it working properly before you changed tubes and moved frequency? I used a Kenwood TKR720 to drive the PA on one of these for several years with the TKR running about 25 Watts. Steve NU5D On 2/22/06, Bryon Jeffers K0BSJ [EMAIL PROTECTED] wrote: I have a Micor 375 Watt station that has the TLD5082 high power PA. I have a fresh set of tubes in the station and on a commercial frequency (156.???) it makes good power, about 400 watts or so.. I have tried to get it to tune up on a 147.??? ham frequency but to no avail. I have heard of these going down with no problem but this one just won't do it. I of course checked MOL to see if the needed parts were available to convert it to the ham band (TLD5081) but they are NLA... Has anyone converted one of these to the ham band and if so what parts did you change? According to the manual the grid tuning cap and some other assorted coils are needed, but I would like to hear from someone that has made one of these work in the ham band... Thanks for your time! Bryon K0BSJ Yahoo! Groups Links -- DE NU5D - Promote Amateur Radio Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] MLS1 GE
I have a friend with an MLS 1 in high split Low band that would like to go 52.525 in the 6 M band. I think this radio uses a suitcase programmer. Anyone know particulars? Steve -- DE NU5D - Promote Amateur Radio Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder]MastrIII part needed
Larry, Is the module destroyed? Seems like these are in the $2K price range. They can be repaired, and I have resurected a non functioning one doing a reset. What is the nature of your failure? Steve NU5D On 2/24/06, Larry Williams [EMAIL PROTECTED] wrote: Hello, looking for a system control module p/n 19D902590G3 or G6 Anyone have one reasonable?? Larry Williams KE4PCZ [EMAIL PROTECTED] Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Duol band commercial antennas
Once needed a combination VHF - 155.22 and UHF 463/468 antenna for a Med Control Base Station - Hustler in Mineral Wells, TX made some for me. But these were for commercial and not ham. I have often used a 155 Mhz db224 on 146 and had reasonable results - also with db420's. Steve NU5D On 2/17/06, Jed Barton [EMAIL PROTECTED] wrote: Hey guys,Hopefully someone knows the anser.Someone around here said there is a duol band antenna that'll work in the ham bands as well as commercial.Any idea if such thing exists?-- DE NU5D - Promote Amateur Radio YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] Duplexer tuning with MINIMUM tools
I once used a 10 Watt freq agile transmitter and wattmeter to set pass freq and a bearcat scanner and a tunable variable frequency generator to set notch on a wacom 678 UHF duplexer. Tuned notch for noisiest signal into scanner. Steve NU5D -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Reza PWW Sent: Thursday, December 22, 2005 10:29 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Duplexer tuning with MINIMUM tools I mean in emergency situation, like in natural disaster. What the minimal tools I have to have to be able to adjust the duplexer and how? reza --- Kris Kirby [EMAIL PROTECTED] wrote: On Thu, 22 Dec 2005, Reza PWW wrote: Can anybody can advise me for tunning duplexer with minimum tools? For example case: I have to change TX-RX frequensi in some place, where I only have SWR and some HT and volt meter? A case of beer, an SWR meter, and a radio. Tune for minimum SWR. The case of beer is to insure accuracy -- largely because there isn't much. You're tuning for minimum insertion loss at that point (technically return loss). Really, you should find a friend with an IFR, communications analyzer, or spectrum analyzer with a tracking generator. To properly do the job, you need a dummy load on the unused port. Impedance mismatches can also do a job on cavity performance. -- Kris Kirby, KE4AHR [EMAIL PROTECTED] BIG BROTHER IS WATCHING YOU! This message brought to you by the US Department of Homeland Security Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Kenwood TKR-820
Some of the low end talkies do not respond to reverse burst. No tone on tail works for most everyone, but not nearly as 'clean' as reverse burst - also there are several different amounts of phase shift with reverse burst. Ssb You DO know the TKR-820 generates reverse burst? From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of DCFluX Sent: Wednesday, December 14, 2005 1:12 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Kenwood TKR-820 Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] GM300 Deviation
Andy, you did not deserve any ridicule, and the think folks meant everything with levity. Remember, when you are being picked on, it means that I am not being picked on.Merry Christmas, ssb From: Repeater-Builder@yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com] On Behalf Of Andrew G. Sent: Wednesday, December 14, 2005 4:55 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] GM300 Deviation OK I deserve this ridicule.meant TX dev. but oh well. Thanks for the help, thought it might be in the software but did not want to pull it out of the site for nothing. Andy YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] Kenwood TKR-820
There is a 9346 eeprom on the signaling board. Seems like removing this chip will make the radio CS. Will be glad to pgm tones/dcs if u want to send the chip. Freq info is contained in a 9346 on the front panel pcb and soldered into place. If you remove and socket this chip, I can also pgm it in my kpt20 box. Set VCOs for 4.0V or as close as u can get, touch up the front end, there are 3 pots for tx deviation, one is max dev I usually set a 4.0 with a loud voice into the mic, then mic gain for the desk mic, then bal squares up dcs data. On the sig board I set rept for 2K in / 2K out. Set hang time for 0, and add a 10mf cap between lead 3 and gnd on the sig bd connector, and this will yield hang time without tone for a quiet turnoff to the mobiles (if you choose to use tone). Usually set the pot on the tx level control for 20 Watts before duplexer and have not had trouble. Lemme know if I can be of any further assistance, Steve NU5D ps makes a nice repeater in 70cm fm just add an ID8 board and goAlso rpt button has to be pressed..ssb From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of DCFluX Sent: Wednesday, December 14, 2005 1:12 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Kenwood TKR-820 Hello All, I am in the process of brute force hacking a Kenwood TKR-820 into the ham bands. No one seems to be forth coming with a schematic of the KPT-50 so I have a cable ghettoed to the back of this laptop going to the serial eeprom on the front board. So far I have been able to program the dual synthisizers to the test frequency of 446.3TX and 441.3RX, simple formula, Target frequency in Khz (446300) minus 21400 divided by 12.5 then converted to hexidecimal for both synthisizers. YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] Flash Technology Tower Lighting
Early Flash Technology strobes had lots of trouble with the energy from the flash causing O2 to evolve into O3 that is highly corrosive and caused the socketed ICs on the controller board to make poor contact in the sockets later on they added a vapor shield between the chamber that houses the tube and the housing for the electronics Dont know much about shelf life, but suspect it should be years and not months, and also several years of service between failures. Sorry I am not much help, Steve NU5D From: Repeater-Builder@Yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Doug Zastrow Sent: Sunday, November 20, 2005 10:42 AM To: Repeater-Builder@Yahoogroups.com Subject: [Repeater-Builder] Flash Technology Tower Lighting Hello All, In return for free tower space our ham club baby sitsa 360 ft. guyedtower. Looking for anyone with real-world experience with Flash Technology FH-324 red/white flash tower obstruction lighting. In the 18 month period following new installation all three red 'beacons' have failed. Tower mounted flash heads have a coupling transformer, trigger transformer, RC network and flash tube. In red beacon failures how often has trouble been in components *other* than the flash tube? Is ittrue red flash tube shelf-life is six months or less? What has the real-world life expectancy (in operation) of the red flash tubes been? FYI, trouble was isolated to the flash heads by swapping cables at the Power Controllers. Trouble stayed with the flash head. Flash heads failed in succession over a period of 4-5 months. Moderator: If this is too far OT don't hesitate to kill. TIA... Doug Zastrow YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] mixing problem?
Does the noise go away when transmitting into a dummy load? Second, can you unhook the receiver from the duplexer and use a clip lead for a receive antenna for a test and see if the signal is still present? GL, Steve -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ray Retzlaff Sent: Friday, June 10, 2005 1:28 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] mixing problem? I just re-built a ge mastr II mobile for use as a repeater on 147.030+ and everything went great here on the bench. when we installed the machine at its new home at a residence on a hilltop we emediatly started having problems with noise on the input freq. it only apears when the repeater is in TX and it appears right on the input 147.630. I have ruled out desense Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] mixing problem?
Well lets see, is the interfering noise present every time you key the transmitter, or sometime yes, and some times no? Reason for this question being most LMR stuff that may be mixing is on and off, broadcast is usually steady on. Also is there any intelligible information in the offending signal, like faint voice, etc? Also, how far are you from any other radio stations, LMR, Broadcast, etc? Sorry to sound like a trial lawyer grilling a witness, but just trying to put the pieces together. Hopefully you have a new antenna installation and new or known to be good cable, etc. Tell me a little about the site, cable lengths, type of cable, antenna, tower, etc. Steve -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ray Retzlaff Sent: Friday, June 10, 2005 1:46 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] mixing problem? - Original Message - From: Steve Bosshard (NU5D) [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, June 09, 2005 11:38 PM Subject: RE: [Repeater-Builder] mixing problem? Does the noise go away when transmitting into a dummy load? Yes Second, can you unhook the receiver from the duplexer and use a clip lead for a receive antenna for a test and see if the signal is still present? Yes it is still present when i used a short piece of wire as the antenna. Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Looking for Used MSR2000 Channell Element
Pretty sure the MSR uses the same elements as the Mitrek mobile radio. Ssb -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of gervais fillion Sent: Thursday, June 09, 2005 10:24 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Looking for Used MSR2000 Channell Element Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Cushamn Service Monitors: Who Repairs Them
NS in Atlanta worked on my 6300 last time. SSB -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Kevin Berlen, K9HX Sent: Sunday, June 05, 2005 8:21 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Cushamn Service Monitors: Who Repairs Them We used Triton Electronics several years ago. I am not sure if they are still in business or not. Kevin, K9HX At 07:55 AM 6/5/2005, you wrote: Who repairs Cushman service monitor's? It seems my monitor has decided to take a dump. Someone once mentioned a place in Chicago, IL but not sure the name or who it was. Any suggestions. Thanks. Mathew Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Simulcast: Anyone done this for ham repeaters
I saw a disciplined oscillator using cdma cellular instead of gps - This would be useful in synchronizing transmitter oscillators. Ed O Conner at Simulcast Solutions has been a super helpful resource. The other half of the picture would be site voting receivers... Most ham clubs do not have the resources for a simulcast system, but it would be nice. Also a trunked 2 or 3 channel system could be viable. Regards, Steve NU5D -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of bradley glen Sent: Sunday, June 05, 2005 2:54 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Simulcast: Anyone done this for ham repeaters Hi Have a look at Simulcast Solutions webpage as they have much info on their site that is extremely interesting. Remember -frequency-phase and deviation from each transmitter is very important. Regards Bradley Glen ZS5WT --- Steve Rodgers [EMAIL PROTECTED] wrote: Thanks for all the replies. One thing I hadn't considered was the audio delay matching requirements. I was more interested in simulcast for frequency reuse then using it for the same audio on multiple TX's. It looks like all you'll get is unintelligible audio in areas where TX's overlap. Steve WA6ZFT On Sunday 05 June 2005 08:41, [EMAIL PROTECTED] wrote: HI Steve You know Mike (DAC) has done that with pagenet and the other companys he has worked for if we can ever tie him down for a bit of time he should be a world of info, I would think you need a Hi Stability TO. on both repeaters. .bob Has anyone implemented a simulcast (multiple TX's on the same channel) system for a ham 440 repeater system? It looks like you have to have TXCO's capable of tracking within a few hertz of each other. You can't do this with standard TCXO's, so I'm wondering if anyone has tried modifying a TCXO to lock to a GPS source, or NTP source. Steve WA6ZFT ___ Get Juno Platinum for as low as $4.97/month! Unlimited Internet Access with 250MB of Email Storage. Visit http://www.juno.com/half to sign up today! Yahoo! Groups Links Yahoo! Groups Links [EMAIL PROTECTED] __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] LTR controller on a GE mastr II Help please
I would not go there.. Steve b Will the FCC certification of the transmitter need to be changed because of the additional circuitry? Neil - WA6KLA Gary Laforce wrote: It is for a Commercial system. But I don't see what that has to do Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Audio limiting on incoming signals
Lemme get the manuals out and see what the specs are. Ssb -Original Message- From: Kevin Custer [mailto:[EMAIL PROTECTED] How much exactly is the amount of minor comprerssion, 2 to 1 or more? Kevin [Steve Bosshard (NU5D)] Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Microphone Gain and Deviation
Best answer I have found for soft spoken folks is the little mic preamp board used in some of the old GE Phoenix and MVS radios. Little single stage amp that operated from bias on the mic line. I usually set the deviation limit for voice at 4.0 Khz. And allow a little for tone/dcg. NEVER EVER USE THE TRANSMITTER DEVIATION CONTROL TO MAKE UP FOR LACKING MIC GAIN. A soft spoken person may need a mic preamp, or a more sensitive microphone. Beware of excessive mic gain competing with ctcss and causing drop or talk down. A small swamping resistor might be in order. Wish Helper still made the modulation density meter SOP is to set a tone gen at around 50 mv or enough to fully modulate the transmitter, and then set the deviation limit to around +/- 4.0 Khz @ 1000 Hz. Tone. Using the IDC to boost mic gain will lead to overmodulation and clipping out of the pass band of the receiver, not to mention the joy you will bring to your adjacent channel neighbors. 2 cents and 30 years, Steve image001.jpgBEGIN:VCARD VERSION:2.1 N:Bosshard;Steve;S.;;(NU5D) FN:Steve S. Bosshard ORG:Bosshard Radio Service TITLE:Proprietor TEL;WORK;VOICE:(254) 773-1102 TEL;WORK;VOICE:(254) 773-1174 TEL;HOME;VOICE:(254) 770-0111 TEL;CELL;VOICE:(254) 624-4230 TEL;WORK;FAX:(254) 773-1174 ADR;WORK;ENCODING=QUOTED-PRINTABLE:;;503 B. South 25th. Street=0D=0ATemple, Texas 76504 LABEL;WORK;ENCODING=QUOTED-PRINTABLE:503 B. South 25th. Street=0D=0ATemple, Texas 76504 ADR;HOME;ENCODING=QUOTED-PRINTABLE:;;901 Delaware Drive=0D=0ATemple, Texas 76504 LABEL;HOME;ENCODING=QUOTED-PRINTABLE:901 Delaware Drive=0D=0ATemple, Texas 76504 EMAIL;PREF;INTERNET:[EMAIL PROTECTED] REV:20040610T093050Z END:VCARD
RE: [Repeater-Builder] Swaping TX and RX freqs?
Seems like some mobile UHF duplexers have a fixed reject notch inherent and you cannot run backwards without retuning, ie, they have high and low ports. Ssb -Original Message- From: Kevin Custer [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 13, 2005 6:55 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Swaping TX and RX freqs? T.J. wrote: I have a question for the group about flipping frequencies around on a [Steve Bosshard (NU5D)] Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
