[Repeater-Builder] db-4062 duplexer
hi all, seems i'm trying to get a db 4062 duplexer to work also i have the tuning info however its the 'c' model and i would like to make it a 'b' model, which meens i suppose the cable harness lengths are longer and one set of loops is longer...i've tried to get the info from DB SPECTRA but not much luck. i think i can interpolate the loops ok but was hoping someone could provide the cable harness lengths from tip to tip of the n connectors..thanks in advance...bk 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] Repeater heard on Aviation Channel! HELP
HI Mike, the connectors were actually new, only been up about 6 months when we changed the antenna, but we did check the hardline before connecting the antenna and nothing showed up. I even added a short length of coax onto the end just to make sure it was not a length issue and no changes. Mathew Mike/k1eg [EMAIL PROTECTED] wrote: Mathew you said this problem started when you changed the antenna. Did you cut back on the feedline and use a new connector? Awhile back there was discussion on here about problems if you don't use a new connector. Just a thought hope it helps. 73 Mike/K1EG - Original Message - From: Mathew Quaife To: Repeater-Builder@yahoogroups.com Sent: Thursday, July 07, 2005 12:14 AM Subject: Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP It is very weird, all evening I have been working with the repeater, and what ever it is, it is very inttermittant, because it will come and go, and there is no pattern for it. I just learned of that pair, but it is the only pair that is close to me that I know of. Mathew Bob Dengler [EMAIL PROTECTED] wrote: At 7/6/2005 01:31 PM, you wrote:The repeater pair that is about 3 miles from here is, and I have not checked to see which way the offset is, but 153.920 and 158.820 is the pair given.MathewDoesn't sound like that has anything to do with the problem. If you can see the spur coming out of your exciter on the S.A., the problem lies somewhere in your system.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/ __Do You Yahoo!?Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com No virus found in this incoming message.Checked by AVG Anti-Virus.Version: 7.0.323 / Virus Database: 267.8.9/42 - Release Date: 7/6/2005__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.
[Repeater-Builder] GLB Channelizer manual
Hi I have copied a GLB 300A Channelizer (synthesizer) kit manual to a PDF file. The manual is for the building the kit but also contains trouble shooting information. If any one is interested in a copy, please email me direct. Be aware that it is a large file (10 Mb). Byron NJ7J 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] Need Controller and Antenna
Hello All, I am finally getting the time to put my UHF repeater together and I am in need of two items to complete the setup (for now atleast) I have the rx, tx, amp, powersupply (EF Johnson CR-1010) Duplexers (DB 4072, huge thanks to John of Maire-Radios for his help with getting them) large run of 1 5/8'' inch hardline (the hardline is hardcore) now I am in need of a controller (the stock controller is a POS) and an antenna (I plan on using a J-pole to test the antenna out at my house but need something better to mount on the tower) I am looking for a good controller for under $100, the cheaper the better! I am sending the channel elements out tomorrow to get recrystaled and that is running me $70, this project is making me go broke. I am also in need of a decent UHF antenna (repeater freq is 444.400Mhz) I would like to get a dipole array but am open to other options. Here again, cheaper is better! I am working at the bargain basement price level, so if anyone has something they are willing to get rid of at a cheap price please let me know, thanks and 73. Alexander N Tubonjic KG4OGN 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] Duplexer
Hi I have asked this before, does anyone in the group know of anyone who makes 6mtr heliax duplexers and can send to the UK.I have been let down a few times here in the UK. 73 Steve M1SWB 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] 6 M Gain Antenna
Joe wrote: Do you mean Ringo Ranger or Ringo Rangeless? ;-) At 08:22 PM 7/6/2005 +0100, you wrote: BTW I think Cushcraft make a 6m ringo ranger which is quite large so may not be suited to an exposed site but supposed to work very well. air-cooled dummy load btw, just an afternote, the 6M and 10M versions are just Ringos, not Rangers. Just an end-fed dipole. -- Jim Barbour WD8CHL 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] Thinking about a whole new repeater
I'm going to do the process of elimation again tomorrow. I did remove the amp, however I did not bypass the duplexer's, and with just the exciter at 5 watts, I don't get anything, and out the duplexer is right about 3 watts, so hard to see anything. As for hearing on 133.300 it can be heard more than three miles from the repeater by another user on his IC 706. I've gathered that it is mixing somewhere, with something, but I'm not sure what. The only consideration for changing, would really be the transmiiter, and that is to remove the Vocom amp, as I really don't need 200 watts to begin with, and I'm not really sure if it is completely resonant at 145 as it was designed for 146 Mhz, and Vocom has no information on the amp, and stated it was built before any of the current employees was there. Mathew Bob Dengler [EMAIL PROTECTED] wrote: At 7/6/2005 07:55 PM, you wrote:I'm looking for something to replace this repeater. I'm not sure ifit is the Vocom Amp, Antenna, Exciter or just plain messed up. I'mtold the GE Mastr II's are easy to convert. How true is this. Doesany one have one lying around. Or who has what available. Must beprice competative, as I've spent more than I should have. I've beenthrough this repeater a dozen times today, thought I had it cured, butthen it starts back up with interference on 132.950, then I find if Igoto 133.300 I can hear the repeater just as if it were on thatfrequency.When you say you can "hear" your repeater on 133.300, do you mean just locally or can someone a mile or more away hear it? Locally, you will spurs 80 or more dB down from your carrier (-80 dBc). These are of no concern as they won't be detectable more than a mile or so away from your repeater.The G.E. Mastr IIs are fairly easy to convert, as are the MVPs (the portapeater I showed you is an MVP). However, I think it would be easier to just get your HiPro exciter cleaned up. If you have verified that the spurs are coming from the exciter, you can put a pass cavity tuned to your output between the exciter amplifier the spur problem will be fixed. So I am at a lost here. It's like it is riding alongsomething, every so often it gets bad, but then it disappears and isgone for awhile.Is this happening to the exciter output, or is this a separate problem?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/ Do you Yahoo!? Yahoo! Mail - Find what you need with new enhanced search. Learn more. 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] Re: GLB Channelizer manual
Hi Byron, I don't see your full email address when reading the group posts on the web, so I have to respond back through the group. Please email me a copy of the manual. I have three or four of the channelizers... One or two were purchased at a flea mkt last month with the micor channel element adapters still on them. thanks skipp [EMAIL PROTECTED] skipp025 at yahoo.com Hellewell, Byron [EMAIL PROTECTED] wrote: Hi I have copied a GLB 300A Channelizer (synthesizer) kit manual to a PDF file. The manual is for the building the kit but also contains trouble shooting information. If any one is interested in a copy, please email me direct. Be aware that it is a large file (10 Mb). Byron NJ7J 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] Repeater heard on Aviation Channel! HELP
I have been reading these post for a couple of days now and seen in the original post that you are loosing 110 watts in the duplexer. Maybe Im the only one that thanks this may have something to do with the problem. What is the SWR between the tx side of the duplexer and the PA? What is the SWR between the antenna port and the feed line to the antenna? When was the last time the duplexer tuned and how was it tuned (i.e. by the watt meter method or by a tracking generator and a spectrum analyzer?) What is the rx signal sen thru the duplexer and also what is the rx sen on the antenna port of the rxer? You should not be loosing 60% of your power into the duplexer something is wrong there. On a 110 watt repeater you should see around 70-80 watts out of the duplexer at least I have seen a little more. Just my two cents Gary LaForce N0PBM 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] db-4062 duplexer
Did you get an answer to this? I've forgotten what the A, B and C ranges were. I have a DB4062 which is 143 - 156 MHz. I can measure the cable length next time I am at the site (should be within a few days). I'm not sure the loops would be any different between the ranges, but they might... I will leave that to someone more qualified to answer it. I assume you tried tuning it without making any changes? What was the result? Paul N1BUG On Wednesday 06 July 2005 09:52 am, ka9fer wrote: hi all, seems i'm trying to get a db 4062 duplexer to work also i have the tuning info however its the 'c' model and i would like to make it a 'b' model, which meens i suppose the cable harness lengths are longer and one set of loops is longer...i've tried to get the info from DB SPECTRA but not much luck. i think i can interpolate the loops ok but was hoping someone could provide the cable harness lengths from tip to tip of the n connectors..thanks in advance...bk 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] 6 Meter dimensions for a PD-128
I had a document on cutting a PD-128 ground plane to 6 meters, but can't find it now. Anyone have the information? Thanks ahead of time, Joe, K1ike 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] Repeater heard on Aviation Channel! HELP
Gary may very well be on the right track. We have a repeater on 146.640 which was being heard by, and keying up, a repeater on 146.680 (input 146.080). Someone un-authorised had fooled around with the duplexer tuning which resulted in the TX putting 45 Watt into the duplexer but only 3 Watt came out of it. Checking the output on a Spectrum Analyzer revealed a Christmas tree look-a-like display as the TX had gone spurious due to the weird impedance mismatch. After retuning the duplexer with a Vector Network Analyzer (I am fortunate enough to have the use of one at work) the problem disappeared and all was well again. This reminds me of an incident many years ago when Industry Canada (then called DOC) contacted us re a ham 2 meter mobile interfering with aircraft communications. To make a long story short, the local ham wanted more power out of his transmitter and had physically adjusted the low pass filter (the push and squeeze method) for more output power. He also defeated the purpose of the filter and all kinds of crap was getting through as well. His Watt meter showed some more power but since it is essentially a non frequency selective device, it didnt care what was going through. Which brings up another story of a tech who could not match a wave mobile antenna to a transmitter no matter how he cut the whip. Again the Spec A showed that the TX was badly spurious and the antenna was showing lots of reflected power because of it. Once the PA was tuned properly so that the spurious signals disappeared, the antenna matched just fine. Sometimes you have to use the proper test equipment to see what is going on. 73, Tony VE3DWI From: Repeater-Builder@yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com] On Behalf Of Gary Laforce Sent: July 7, 2005 12:23 To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Repeater heard on Aviation Channel! HELP I have been reading these post for a couple of days now and seen in the original post that you are loosing 110 watts in the duplexer. Maybe Im the only one that thanks this may have something to do with the problem. What is the SWR between the tx side of the duplexer and the PA? What is the SWR between the antenna port and the feed line to the antenna? When was the last time the duplexer tuned and how was it tuned (i.e. by the watt meter method or by a tracking generator and a spectrum analyzer?) What is the rx signal sen thru the duplexer and also what is the rx sen on the antenna port of the rxer? You should not be loosing 60% of your power into the duplexer something is wrong there. On a 110 watt repeater you should see around 70-80 watts out of the duplexer at least I have seen a little more. Just my two cents Gary LaForce N0PBM
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[Repeater-Builder] Motorola Spectra-Tac Voter
I am contemplating putting a Motorola Spectra-Tac voting system on one of the systems I am responsible for. Has anyone else installed one of these in it's native form (constant 2175Hz on the RF links)? I know there is the requirement to ID each link every 10 minutes. Or has someone modified the SQM's to respond to a COR signal rather than the absence of the 2175 Hz tone? I am just in the very early stages at this point, but thought I would do some fact finding work. Thanks for any input and 73, Kevin, K9HX 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] OT Burned Attenuator
I have committed the unforgivable sin in RF world. I transmitted into my step attenuator and burned up some precision resistors. kicking self now What kind of currently available resistors are considered to be non-inductive and usable for attenuators up thru 450mc. Carbon film, carbon composition, metal film... What construction do I start browsing for? I need values of 247.5 and 61.1 ohms. (or somewhere close...) Thanks all. Laryn K8TVZ 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] OT Burned Attenuator
Laryn How many of each do you need and what size are they? What attenuator are these in? 73 Glenn WB4UIV At 11:34 PM 07/07/05, you wrote: I have committed the unforgivable sin in RF world. I transmitted into my step attenuator and burned up some precision resistors. kicking self now What kind of currently available resistors are considered to be non-inductive and usable for attenuators up thru 450mc. Carbon film, carbon composition, metal film... What construction do I start browsing for? I need values of 247.5 and 61.1 ohms. (or somewhere close...) Thanks all. Laryn K8TVZ 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] Duplexer
this guy was one of the early builders of 6 meter duplexers i think. WB5WPA. do a search on him .bob ___ Try Juno Platinum for Free! Then, only $9.95/month! Unlimited Internet Access with 250MB of Email Storage. Visit http://www.juno.com/value to sign up today! 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] 6 M Gain Antenna
for a good 6 meter antenna look at http://www.krecoantennas.com/ the owner is a ham and will build it to your frequency. the antennas are bullet proof and he has seperate prices for fellow hams. .bob kd6gnb ___ Try Juno Platinum for Free! Then, only $9.95/month! Unlimited Internet Access with 250MB of Email Storage. Visit http://www.juno.com/value to sign up today! 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] db-4062 duplexer
KA9FER DB4062 duplexer to change band segments. I have loop information you need to modify or replace the loops. Its a little complicated (for me anyway). If you give me a FAX number or snail mail info I can send the information to you. It won't look pretty or clear because is will be a fax or Xerox of a fax. Mine was a model C that was changed to model B and alignment went very well. It was not necessary to change cable lengths. You must be careful about the null tuning capacitors. They are very fragile plus expensive and easily broken. They are also available. Note the low side loops are not the same length as the high side so don't switch them around.I am in Trenton, NJ and my phone number is 609 586-7443. The info I have is from Decibel Products, a division of Allen Telecom Inc. Dallas, Texas. Gary Katona K2UQ 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.
