[Repeater-Builder] Re: Rolling Pipe Sound
Yep, its still with me that nasty IM. Going to put a band pass filter in front of the receiver first as I do not have one at this time. Thanks for all the help. Just have to wait for parts for now. Scott KB7DZR --- In Repeater-Builder@yahoogroups.com, Nate Duehr n...@... wrote: Nasssty. Evil IM. Nice find. Nate WY0X On Dec 7, 2009, at 8:49 PM, larynl2 wrote: Do you have two FM stations in your area that are separated by 600 kc.? That will definitely do exactly what you describe. We had it on our repeater. I caught in one of your posts that your transmitter needs to be on for the problem to appear, so that's intermod causing your interference, not just a random carrier coming from a router or whatever device. The problem here was caused by an FM station on 89.9 about a mile away, and another one on 89.3 roughly six miles away, plus our transmitter on 147.06. A+B-C=D 147.06 + 89.9 - 89.3 = 147.66. The thing to watch for with FM broadcast intermod is the wide bandwidth of the intermod product. There was no interference until BOTH stations were quiet -- no modulation. Obviously, the instances of both being quiet simultaneously are quite random in length and occurrence, depending on the program material of each. I tracked the location of the mixing with the aid of a spectrum analyzer, which turned out to be safety cables threaded through the turnbuckles. Laryn K8TVZ
Re: [Repeater-Builder] Sd174 uhf
Ok installed a dummy load on the side we are not using and also tuned that to 517.025 and tuned the other side to 473.200 .Results are rx and TX though the 473.200 notched side is aprox 4db loss and the TX 517.025 is now producing 2 watt and no interference from the 473.200 transmitter so it looks like the idea worked .I just need to try it on site. Thank You, Ian Wells, Kerinvale Comaudio, 361 Camboon Road.Biloela.4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaudio.com.au ---Original Message--- From: DCFluX Date: 8/12/2009 14:42:18 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sd174 uhf A 50 ohm terminator should suffice, you may want to tune the terminated side to notch the TX frequency. On Mon, Dec 7, 2009 at 7:28 PM, Ian Wells kerin...@pacific.net.au wrote: Yep its a mobile style 6 pack notch .would it be best with a 50 ohm dummy load or 50 ohm terminator.I thought about tuning it with notch of 473.200 on the side we want to use (between the sd174 and antenna) and notch of 517.025 on the unused side (the side that goes to the dummy load) Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: DCFluX Date: 8/12/2009 12:59:08 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sd174 uhf dont know that number, but sounds like a mobile style 6 cavity notch duplexer, try the other side if the insertion loss is too high going one way and the opposite side should have a 50 ohm load on it On Mon, Dec 7, 2009 at 6:01 PM, Ian Wells kerin...@pacific.net.au wrote: Can one side of a 6mc450s diplexer be used as I have a few of them laying around .The first test I tried worked well with a 6mc450s with no interference but the 174 lost a lot of its TX power through it .from 3 watt it reduced it down to .5 watt .I can say I didn't have a 50 ohm terminator on the unused port which I should try next time and see how that's goes Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: DCFluX Date: 8/12/2009 11:51:22 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sd174 uhf In that case use a single notch cavity to remove the 473 frequency in question. Circulators can be used in conjunction with shorted stubs and cavities to create super narrow notch filters, but this may be more than you need. http://books.google com/books?id=trJ6rhF0lU0Cpg=PA122dq=circulator+notch+filter#v=onepageq=cir ulator%20notch%20filterf=false On Mon, Dec 7, 2009 at 5:21 PM, Ian Wells kerin...@pacific.net.au wrote: How would a circulator or isolator work .The transmitt signal from the data radio could pass through to the antenna and the rx signal could be received from the antenna and The signal you wish to remove from the data radio radio on receive could be notched to the dummy load . The data radio radio frequencies are set for 507.025mhz rx 517.025mhz TX and the frequency that is interfering is on 473.200mhz. Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: DCFluX Date: 8/12/2009 11:08:15 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sd174 uhf depends on the quality of the filter. I would try using the coax stub routine with RG-58 as the coax, that should be fairly wide. But look at it on a spectrum analyzer to be sure it will pass both signals. If not try building a 3-5 pole interdigital BPF. Those can tune 10MHz wide easy. On Mon, Dec 7, 2009 at 4:57 PM, Ian Wells kerin...@pacific.net.au wrote: Our TX and rx frequencies are 10 meg apart so a band pass filter may have problems giving good signal on both or should I tune the filter in the middle of the two frequencies Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: DCFluX Date: 8/12/2009 10:53:00 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Sd174 uhf The lack of a front end comes to mind. You basicly got there a hand held in a pretty box with a DB-9. Try adding a bandpass filter, such as a bandpass cavity, shorted coaxial stub or a interdigital bandpass filter. On Mon, Dec 7, 2009 at 3:42 PM, kerinvale kerin...@pacific.net.au wrote: Hi guys .I have a SD 174 maxon data radio and it seems to not be able filter other transmitters near by .The receiver opens up with squark noise even when programmed with ctcss .can anyone suggest whats possibly the problem is and possible fixes.I have one on site and
Re: [Repeater-Builder] Re: Rolling Pipe Sound
I recently located a very similar problem on a T-band public safety system, only in this case, it was two transmitters in a 28 channel 800 MHz trunker that were exactly 3 MHz apart that added that critical component to the mix. The end result was that every t-band repeater at that site would add it's own transmitter to the mix component, and would cause a feedback howl that could best be described as a rolling pipe. Adding to the confusion in finding it, it would hit the various t-band channels in what seemed like a random fashion. It wasn't until later that I realized what was happening is, the combination of activity on any particular T-band receiver would cause it's associated transmitter to activate (obviously!), and if the two 800 MHz transmitters in question were active at that time, the howling noise would start up. If the other repeaters were quiet, they would STAY quiet. Cross coding the PL's between your own transmitter and receiver can help mask the symptom, because your own transmitter may end up providing the PL (or DPL, as the case may be) needed to open the receiver. Depending on where the mix is actually taking place, you may or may not be able to locate it and actually fix it. In that case, masking it becomes the necessary solution. In my case, the mix is pervasive throughout the site - including miles of rusty chain link fence. Removing the Angle Linear preamp eliminated the symptom, but only because, since the mix product is a pretty low level, it's making the receivers sensitive enough to hear what's always there. Mel - WA6JBD --- On Mon, 12/7/09, larynl2 lar...@hotmail.com wrote: From: larynl2 lar...@hotmail.com Subject: [Repeater-Builder] Re: Rolling Pipe Sound To: Repeater-Builder@yahoogroups.com Date: Monday, December 7, 2009, 7:49 PM Do you have two FM stations in your area that are separated by 600 kc.? That will definitely do exactly what you describe. We had it on our repeater. I caught in one of your posts that your transmitter needs to be on for the problem to appear, so that's intermod causing your interference, not just a random carrier coming from a router or whatever device. The problem here was caused by an FM station on 89.9 about a mile away, and another one on 89.3 roughly six miles away, plus our transmitter on 147.06. A+B-C=D 147.06 + 89.9 - 89.3 = 147.66. The thing to watch for with FM broadcast intermod is the wide bandwidth of the intermod product. There was no interference until BOTH stations were quiet -- no modulation. Obviously, the instances of both being quiet simultaneously are quite random in length and occurrence, depending on the program material of each. I tracked the location of the mixing with the aid of a spectrum analyzer, which turned out to be safety cables threaded through the turnbuckles. Laryn K8TVZ Yahoo! Groups Links repeater-builder-fullfeatu...@yahoogroups.com
[Repeater-Builder] Re: Astron RM-35M AGM charging abilities?
The Schottky diode approach works best with a switching supply that is inherently current-limiting. Some linear supplies cannot start under load, following a power outage. Although it may take a day or two to recharge an AGM battery when it only sees the float voltage. What voltage/condition exists on the DC Supply line when the battery is depleted and the charger is not able restore the battery for x-amount of time. Is the radio/repeater out of service during a/the low voltage condition? Ideally, the AGM battery should be bulk-charged at a higher than normal voltage, and then put back on float voltage once it is fully charged. But, that process involves a more complex and expensive setup than most folks want. AA Engineering and Xantrex make a few really neat charge controllers that are worth looking at. My Schottky diode setup works just fine and is simple to implement. Some folks may argue that a low-voltage disconnect feature is needed, but many radios simply stop working once the supply voltage drops much below 9 or 10 volts- sort of a built-in LVD feature. But most all of them probably still draw current... unless they are of a fairly recent generation. Of course, some radios and controllers will continue to draw current all the way down to zero volts, and I avoid such power hogs for that reason. It only takes one wasted bank of dead site batteries to be replaced to put value into a low voltage disconnect, which is fairly easily constructed with less than $30 in parts typical. How much current (energy) a device draws in regular operation is a different animal of how events unfold during a loss of power revert to battery situation. If you're at a solar only site sometimes you have to live with limited energy sources where the Low Voltage Disconnect will save your bacon. cheers, s.
[Repeater-Builder] Price Check on aisle five.....
Hey guys, I have the opportunity to purchase some surplus Andrew heliax. The model is EFX2RN-50. It is 3/8 At $0.50/foot, is this a good deal? I don't think connectors are installed. I am thinking of using it for amateur use on the VHF UHF bands at home. What do you think? -Albert
RE: [Repeater-Builder] Price Check on aisle five.....
Just a thought, 3/8 may be hard to get connectors for? I would think you could get ½ for the same price and half inch connectors are available and if you look around , available at a good price. I am going thru getting connectors for 5/8 and they are rare and EXPENSIVE. Something to check into. Good Luck 73 JIM KA2AJH From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of hitekgearhead Sent: Tuesday, December 08, 2009 2:38 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Price Check on aisle five. Hey guys, I have the opportunity to purchase some surplus Andrew heliax. The model is EFX2RN-50. It is 3/8 At $0.50/foot, is this a good deal? I don't think connectors are installed. I am thinking of using it for amateur use on the VHF UHF bands at home. What do you think? -Albert
Re: [Repeater-Builder] Price Check on aisle five.....
You can solder PL-259s directly to 3/8, but proper connectors may be hard to come by. On Tue, Dec 8, 2009 at 12:49 PM, Jim Cicirello ka2...@gmail.com wrote: Just a thought, 3/8” may be hard to get connectors for? I would think you could get ½” for the same price and half inch connectors are available and if you look around , available at a good price. I am going thru getting connectors for 5/8” and they are rare and EXPENSIVE. Something to check into. Good Luck 73 JIM KA2AJH *From:* Repeater-Builder@yahoogroups.com [mailto: repeater-buil...@yahoogroups.com] *On Behalf Of *hitekgearhead *Sent:* Tuesday, December 08, 2009 2:38 PM *To:* Repeater-Builder@yahoogroups.com *Subject:* [Repeater-Builder] Price Check on aisle five. Hey guys, I have the opportunity to purchase some surplus Andrew heliax. The model is EFX2RN-50. It is 3/8 At $0.50/foot, is this a good deal? I don't think connectors are installed. I am thinking of using it for amateur use on the VHF UHF bands at home. What do you think? -Albert
RE: [Repeater-Builder] Price Check on aisle five.....
The RN in the part number tells me it's the grey fire-retardant jacket. Unless Andrew changed what they make the jacket out of, it should NOT be used outdoors, it degrades quickly from UV. It's primarily intended to be used as a plenum-rated cable indoors. I remember scrapping about 800' of 1-1/4 LDF6 with that grey jacket that had to be taken off a tower because the jacket had split and was cracking and falling off the cable the entire length of the outdoor run. The former tenant that had installed the line got it cheap, but didn't know/understand that it wasn't supposed to be used outdoors. EFX2 is extra-flexible. It's even more flexible than Superflex. The jacket on those cables is thinner than regular Heliax, making them more susceptable to nicks and subsequent water ingress when used outdoors. $0.50 is a fair price at best for surplus 3/8 'flex. You should be able to find some surplus 1/2 (non-flex) for that price. --- Jeff WN3A -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of hitekgearhead Sent: Tuesday, December 08, 2009 2:38 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Price Check on aisle five. Hey guys, I have the opportunity to purchase some surplus Andrew heliax. The model is EFX2RN-50. It is 3/8 At $0.50/foot, is this a good deal? I don't think connectors are installed. I am thinking of using it for amateur use on the VHF UHF bands at home. What do you think? -Albert No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.426 / Virus Database: 270.14.82/2525 - Release Date: 12/08/09 07:34:00
Re: [Repeater-Builder] Price Check on aisle five.....
Not sure what you are asking: The cables specs are good for VHF UHF. .50 a foot is a good price. Handles more than legal amateur power. connectors are available on several sites. I would buy it yes --- On Tue, 12/8/09, hitekgearhead hitekgearh...@hotmail.com wrote: From: hitekgearhead hitekgearh...@hotmail.com Subject: [Repeater-Builder] Price Check on aisle five. To: Repeater-Builder@yahoogroups.com Date: Tuesday, December 8, 2009, 11:38 AM Hey guys, I have the opportunity to purchase some surplus Andrew heliax. The model is EFX2RN-50. It is 3/8 At $0.50/foot, is this a good deal? I don't think connectors are installed. I am thinking of using it for amateur use on the VHF UHF bands at home. What do you think? -Albert Yahoo! Groups Links
[Repeater-Builder] Trouble sending to this group
I have been having trouble sending to this group. Anyone else with this problem? Marvin - W6MJM
[Repeater-Builder] Motorola Desktrac from Desktrac Base
Wondering what is needed to convert a Desktrac Base to a Desktrac Repeater other than adding a GM300 receiver? I would be considering both 2m and 440 models. I have the duplexers. Dave N2KTO
[Repeater-Builder] Need Help - Setting up a New Repeater Station!
Hi All Need help! I am new to this group, I am a Ham Radio Operator call sign VU2YEP, from New Delhi, INDIA. We are planning to open up a repeater club. Most likely it will be a VHF repeater. We use 144-146Mhz as our 2 meters band. We plan to put up a repeater which support 50 watts TX, we will install 6 cavity duplexer supporting .600khz and triple stack vertical antenna, power supply, battery and repeater controller etc... Currently need suggestions on the below mentioned two parts separately around the repeater selection - PART I - Q1. - Should we go with two separate base stations ( two VHF mobile radios from Icom, Kenwood or Yaesu) one for RX and one for TX with a repeater controller and a duplexer ? Q2. - Any specific models of VHF base mobiles, which are good from a repeater building perspective.. kinda tried and tested ones..having good selectivity and decent sensitivity too ? PART - II If, in case we go for a commercial repeater, then i.e from Kenwood, Yaesu or Icom, which one would this group would suggest from overall performance perspective ? I am specifically looking for a feedback around the following models - Kenwood TKR -750, Yaesu VXR 7000 and Icom FRG 5000 repeater systems, which one is the best from durability ( overall maintenance, Signal quality, TX for long) and overall features perspective ? Waiting for your kind response from this group, all views are welcomes, so please be open to give your opinion! 73s Karan, VU2YEP
[Repeater-Builder] test
Sorry about that. Nothing I send gets posted. Marvin - W6MJM
[Repeater-Builder] Help with MASTR EXEC-II, TWO MARC-V; Option/Combo deciphering?
These 3 radios (with a 2m duplexer and a 6-ft cabinet, some misc. other gear, cable and bits) were just donated to KF6RRR for his BSA Venture Crew; we're trying to figure out what they are, and who might be able to use them, and find them a good home, return the Scouts some cash... After some searching at Repeater-Builder.com, I haven't found the right Combo lists yet to decipher them. PCS3, PC05, PC06, PC13, PC18 no joy: 1 MASTR EXECUTIVE II (UNLOCKED) SERIAL: 0385878 SPL SHIP DATE 102 COMBINATION: WVR16HS MOD STATUS * 2 3 * * * * FCC XMTR DATA XT169-A 8 9 10 11 12 13 14 15 16 FCC RCVR DATA ER89-A (UHF Connector on front, extra [rcv?] coax) 1 cable to mate with front, to 12-molex (3x4)+ DC+/-, +BNC-RCA thru pnl. combo# deciphers to: W wall-mount? V 12VDC? (still looking for the right list...) R SPL may mean Special? Oh, joy! 1 6 H S 2 GE MARC V (Wikipedia: 806-869MHz 'scan-based trunking') SERIAL: 0304202 'CLUNK' INSIDE --? (LOCKED) COMBINATION: M2YTL5ZOXX (N Conn on front) FCC XMTR DATA XT-187-A FCC RCVR DATA ER-117-A combo# deciphers to: M 2 Y T L 5 Z O X X SERIAL: 0331391(LOCKED) COMBINATION: M2YTL5M0XX (N Conn on front) FCC XMTR DATA XT-187-A (1 BENT PIN, JONES' PART OF CONNECTOR) FCC RCVR DATA ER-117-A combo# deciphers to: M 2 Y T L 5 M 0 X X As I mentioned, there's more; a 2m set of cans, a cabinet, a case of odd bits, some used heliax and RG-(8?) and 12-conductor square control cable, but knowing what these radios above are would help a buyer figure out what they want, and get some cash to Hal's crew. -- '---O=o=O---' 73, Phil Barnes-Roberts WA6DZS Mailto:pbarnrob at acm dot org Microsoft gives you Windows; Linux gives you the whole house.
RE: [Repeater-Builder] Astron RM-35M AGM charging abilities?
Hello Group, Did you think about the West Mountain Radio PWRgate. I think it has all the capabilities you are looking for, even a 3 stage charger so you don't boil your batteries to death. Here is the one I use. http://www.impulseelectronics.com/pwrgate_super.htm and here is some more information on this thing. http://www.impulseelectronics.com/superpwrgatefeatures.htm I think there is some more information on the WMR web site in their technical section. Marvin - W6MJM
[Repeater-Builder] battery
I have to agree with Paul. Yellow top batteries are not all they are cracked up to be, however they should have worked, maybe not just as long. I like his choice of the AGM BA-UB-GC-2 golf cart batteries even though they are relatively expensive. I used 24 of them coupled into 6 paralleled groups of 4 (24 volt) for a solar project at a friends place in Baja. that's 1260 AHrs or 30 KWHrs. They have performed superbly and run everything from refrigerators and a microwave to a washing machine and of course all the house lights. (I sent this out earlier, but it did not make the cut or something.) Hi Guys, Why not use AGM batteries and reduce the explosion problems. They can be mounted in any position and do not have need for water filling or venting applications, however I would recommend they not be sealed in a box and have some slight venting. There is some good battery information at: http://www.impulseelectronics.com/batteries_tech.htm and http://www.impulseelectronics.com/batteries2.htm. Marvin - W6MJM
[Repeater-Builder] Re: MAxtrac Help please
The HMN3013A does not need to be rewired - it will work fine on the Maxtrac. The HMN1037B, TMN6169A, TDN8305A/B and TDN8310 will work as well. The MAXTRAC pages of Repeater-Builder are great for finding such info. The MAXTRAC INDEX is here: http://www.repeater-builder.com/maxtrac/maxtrac-index.html Just for reference, you won't find a voltage on the radio's mic jack. Pin 5 carries mic audio and preamp DC bias voltage. --- In Repeater-Builder@yahoogroups.com, w7nikw7nik w7...@... wrote: Has anyone rewired the pin out on a Motorola DTMF mic model hmn3013a to a maxtrac 300 . I do not see voltage out the mic jack , this might be a problem . Any help would be great I can get different dtmf mic , but i don't know what model to get .
[Repeater-Builder] Need Help - Setting up New Repeater Station!
Hi All Need help! I am new to this group, I am a Ham Radio Operator call sign VU2YEP, from New Delhi, INDIA. We are planning to open up a repeater club. Most likely it will be a VHF repeater. We use 144-146Mhz as our 2 meters band. We plan to put up a repeater which support 50 watts TX, we will install 6 cavity duplexer supporting .600khz and triple stack vertical antenna, power supply, battery and repeater controller etc... Currently need suggestions on the below mentioned two parts separately around the repeater selection - PART I - Q1. - Should we go with two separate base stations ( two VHF mobile radios from Icom, Kenwood or Yaesu) one for RX and one for TX with a repeater controller and a duplexer ? Q2. - Any specific models of VHF base mobiles, which are good from a repeater building perspective.. kinda tried and tested ones..having good selectivity and decent sensitivity too ? PART - II If, in case we go for a commercial repeater, then i.e from Kenwood, Yaesu or Icom, which one would this group would suggest from overall performance perspective ? I am specifically looking for a feedback around the following models - Kenwood TKR -750, Yaesu VXR 7000 and Icom FRG 5000 repeater systems, which one is the best from durability ( overall maintenance, Signal quality, TX for long) and overall features perspective ? Waiting for your kind response from this group, all views are welcomes, so please be open to give your opinion! 73s Karan, VU2YEP
[Repeater-Builder] DB4032 cable harness
I'm building a duplexer similar to the Decibel DB4032 for 6m, so far one cavity has been built and measurements look promising. Concerning the cable harness I know that some diagrams have been published with adjusted cable and stub lengths for ham use, but I would prefer to know how these are calculated as I need to have the duplexer on Swiss 6m repeater frequencies (51-52 MHz) and do not know how much difference this makes. Can anybody help? 73 de Martin HB9TZW
[Repeater-Builder] Re: Trouble sending to this group
Depends really, Are you a Republican or a Democrat? :-) w6mjm w6...@... wrote: I have been having trouble sending to this group. Anyone else with this problem? Marvin - W6MJM
Re: [Repeater-Builder] Re: Rolling Pipe Sound
I have a wav (3Meg) file of the rolling pipe sound. What is the best way to get it to those that want to listen to it? 73, dave wa3gin - Original Message - From: Facility 406 DM09 To: Repeater-Builder@yahoogroups.com Sent: Monday, December 07, 2009 9:39 PM Subject: Re: [Repeater-Builder] Re: Rolling Pipe Sound I don't think I've ever heard a rolling pipe sound over a repeater, although, once I had some interesting feedback from an SSB transmitter with FM receiver. Is there a good clean recording available?
RE: [Repeater-Builder] Help with MASTR EXEC-II, TWO MARC-V; Option/Combo deciphering?
I would be interested in the 2-m cans. What are the make and model? And where are they located? John AF4PD -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of Philip Barnes-Roberts WA6DZS Sent: Monday, December 07, 2009 12:42 AM To: Repeater-Builder@yahoogroups.com Cc: Dr. Hal Frank KF6RRR Subject: [Repeater-Builder] Help with MASTR EXEC-II, TWO MARC-V; Option/Combo deciphering? These 3 radios (with a 2m duplexer and a 6-ft cabinet, some misc. other gear, cable and bits) were just donated to KF6RRR for his BSA Venture Crew; we're trying to figure out what they are, and who might be able to use them, and find them a good home, return the Scouts some cash... After some searching at Repeater-Builder.com, I haven't found the right Combo lists yet to decipher them. PCS3, PC05, PC06, PC13, PC18 no joy: 1 MASTR EXECUTIVE II (UNLOCKED) SERIAL: 0385878 SPL SHIP DATE 102 COMBINATION: WVR16HS MOD STATUS * 2 3 * * * * FCC XMTR DATA XT169-A 8 9 10 11 12 13 14 15 16 FCC RCVR DATA ER89-A (UHF Connector on front, extra [rcv?] coax) 1 cable to mate with front, to 12-molex (3x4)+ DC+/-, +BNC-RCA thru pnl. combo# deciphers to: W wall-mount? V 12VDC? (still looking for the right list...) R SPL may mean Special? Oh, joy! 1 6 H S 2 GE MARC V (Wikipedia: 806-869MHz 'scan-based trunking') SERIAL: 0304202 'CLUNK' INSIDE --? (LOCKED) COMBINATION: M2YTL5ZOXX (N Conn on front) FCC XMTR DATA XT-187-A FCC RCVR DATA ER-117-A combo# deciphers to: M 2 Y T L 5 Z O X X SERIAL: 0331391(LOCKED) COMBINATION: M2YTL5M0XX (N Conn on front) FCC XMTR DATA XT-187-A (1 BENT PIN, JONES' PART OF CONNECTOR) FCC RCVR DATA ER-117-A combo# deciphers to: M 2 Y T L 5 M 0 X X As I mentioned, there's more; a 2m set of cans, a cabinet, a case of odd bits, some used heliax and RG-(8?) and 12-conductor square control cable, but knowing what these radios above are would help a buyer figure out what they want, and get some cash to Hal's crew. -- '---O=o=O---' 73, Phil Barnes-Roberts WA6DZS Mailto:pbarnrob at acm dot org Microsoft gives you Windows; Linux gives you the whole house. Yahoo! Groups Links __ NOD32 4671 (20091208) Information __ This message was checked by NOD32 antivirus system. http://www.eset.com
[Repeater-Builder] Re: Need Help - Setting up New Repeater Station!
Karan, Joe, WA7JAW here in Southern Oregon. I have had some experience using two Yaesu mobiles and would do that only as a last resort. A repeater group in my area had 3 sites that they had used a pair of Yaesu two meter mobiles and a mobile amplifier for repeaters. They lasted a few years and were pretty marginal and required multiple amplifier replacements. Only one site is still working. I replaced one with a Motorola Micor repeater and the second one with a GE Mastr II repeater. I am not sure if you can get Motorola radios over there, but a couple of their mobiles can and do make a acceptable light duty repeater. None of these repeaters made out of mobiles will have any real duty cycle, like a factory made repeater will have. Turning the power down and adding a factory repeater power amplifier is the most reliable, but when you get done purchasing all the parts, you are not that far off from a real repeater, which you typically only have to buy once. The two mobile solution sometimes ends up costing more over their lifetime, than say a Kenwood TKR would. As people often say quality only hurts once. When you buy it. I would recommend the Kenwood over the Vertex, but either unit will give you good performance. Just make sure you order the correct model for two meters. I would not even consider the Icom factory repeater as I have had bad experiences with several models of the Icom units. I prefer the Arcom RC-210 repeater controllers. Ken at Arcom provides very good support and can also hook you up with a complete package with a new Kenwood TKR repeater and RC-210 controller all wired up and ready to go. Duplexer sounds like it should work fine as long as it has at least 90 db isolation at 600 KHz separation. Make sure your feedline and all jumpers are good quality double shielded cable, or use heliax for best performance. Stay away from the cables with a foil type shield as they are a very good source of noise and desense in repeaters. Good luck with your project. Joe - WA7JAW --- In Repeater-Builder@yahoogroups.com, Karan Bakshi vu2...@... wrote: Hi All Need help! I am new to this group, I am a Ham Radio Operator call sign VU2YEP, from New Delhi, INDIA. We are planning to open up a repeater club. Most likely it will be a VHF repeater. We use 144-146Mhz as our 2 meters band. We plan to put up a repeater which support 50 watts TX, we will install 6 cavity duplexer supporting .600khz and triple stack vertical antenna, power supply, battery and repeater controller etc... Currently need suggestions on the below mentioned two parts separately around the repeater selection - PART I - Q1. - Should we go with two separate base stations ( two VHF mobile radios from Icom, Kenwood or Yaesu) one for RX and one for TX with a repeater controller and a duplexer ? Q2. - Any specific models of VHF base mobiles, which are good from a repeater building perspective.. kinda tried and tested ones..having good selectivity and decent sensitivity too ? PART - II If, in case we go for a commercial repeater, then i.e from Kenwood, Yaesu or Icom, which one would this group would suggest from overall performance perspective ? I am specifically looking for a feedback around the following models - Kenwood TKR -750, Yaesu VXR 7000 and Icom FRG 5000 repeater systems, which one is the best from durability ( overall maintenance, Signal quality, TX for long) and overall features perspective ? Waiting for your kind response from this group, all views are welcomes, so please be open to give your opinion! 73s Karan, VU2YEP
[Repeater-Builder] Re: Price Check on aisle five.....
Well, given the responses I think I will pass on it. I would have wanted to run at least some of it outside to my antenna, so if it degrades quickly outdoors then that kills the deal. I was aware that there is a way to attach PL-259's to 3/8 heliax, but this spawns another question. Could N connectors meant for the same size cable be put on 3/8 heliax? Thanks for the input guys. Maybe I will keep an eye out for 1/2 -Albert --- In Repeater-Builder@yahoogroups.com, Jeff DePolo j...@... wrote: The RN in the part number tells me it's the grey fire-retardant jacket. Unless Andrew changed what they make the jacket out of, it should NOT be used outdoors, it degrades quickly from UV. It's primarily intended to be used as a plenum-rated cable indoors. I remember scrapping about 800' of 1-1/4 LDF6 with that grey jacket that had to be taken off a tower because the jacket had split and was cracking and falling off the cable the entire length of the outdoor run. The former tenant that had installed the line got it cheap, but didn't know/understand that it wasn't supposed to be used outdoors. EFX2 is extra-flexible. It's even more flexible than Superflex. The jacket on those cables is thinner than regular Heliax, making them more susceptable to nicks and subsequent water ingress when used outdoors. $0.50 is a fair price at best for surplus 3/8 'flex. You should be able to find some surplus 1/2 (non-flex) for that price. --- Jeff WN3A -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of hitekgearhead Sent: Tuesday, December 08, 2009 2:38 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Price Check on aisle five. Hey guys, I have the opportunity to purchase some surplus Andrew heliax. The model is EFX2RN-50. It is 3/8 At $0.50/foot, is this a good deal? I don't think connectors are installed. I am thinking of using it for amateur use on the VHF UHF bands at home. What do you think? -Albert No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.426 / Virus Database: 270.14.82/2525 - Release Date: 12/08/09 07:34:00
Re: [Repeater-Builder] Astron RM-35M AGM charging abilities?
Marvin Munster wrote: Did you think about the West Mountain Radio PWRgate. I think it has all the capabilities you are looking for, even a 3 stage charger so you don't boil your batteries to death. Here is the one I use. http://www.impulseelectronics.com/pwrgate_super.htm After reading the manual for that previously, my problem with those was they are limited to a 10A charge to the batteries. Also they recommend connecting your load directly to the battery if you have a mission critical load (wouldn't a repeater qualify). I would recommend something like a commercial/RV power converter. I picked up a new WFCO 55Amp converter from ebay for $99 that will run with or without batteries and includes a 3 stage charger. There are other manufactures of these products, though most are fairly similar. Even MFJ has an over-priced version for use with their Ameritron HF Amplifiers. One local repeater site around here uses a single 75Amp model and a 400AH battery bank to run 4 VHF/UHF repeaters. It doesn't solve the low voltage cut-off problem, but does a fine job of running load and charging at the same time. Will Gwin www.N5KH.org
