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] Winegard TV pre-amps
This is the antenna that was causing interference :- http://www.winegard.com/interference.htm There was also an ARRL article floating around a while back. Andrew -- --- KC2EUS - GM1YMI KC2EUS/R 443.700 MHz 100 Hz PL IRLP #4925 Elink #9969 www.kc2eus.org www.kc2eus.org/sota --- Steve Bosshard (NU5D) wrote: 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. 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] Followuup for White Noise on 2 meters...
Well, after a few months of agrivation, we have finally found the trouble. There is an internet and cellphone relay system on the tower as well as the commercial FM transmitter. The problem was high speed data being radiated at a very low level from the data line that runs from the transmitter room up to the antenna on the Cellphone relay system. The actual transmitter for this system is located at the antenna so only data flows up the coax. Apparently they run very high speed DIGITAL data on a coaxial line that runs up the tower leg, RIGHT NEXT to our DB224. Thier data coax had a break in it about mid section to our antenna. I am not sure of the power level in the coax but the data frequency is between 100 and 200 MHZ, very broad spectrum. It didn't take much of a leak to completely blank our receiver when the source of the leak was less than a foot from our antenna. Once the coax was replaced, all is now quiet and normal. We found it by using a specrum anaylizer and super sniffing. I hope none of you folks ever have this sort of trouble, It kept us scratching our head for over SIX months. The hardest thing about finding it is that it was intermittent. Some days it was quiet and others it was wiping out the repeater. Thanks for all the suggestions 73's and Happy Hamming!! Gary - W5GNB 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] Power Supply
Go to this adress for RS-50M... http://www.repeater-builder.com/astron/astron-index.html Best 73' Eric VE2VXT -Message d'origine- De : Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] De la part de Gary Envoyé : 26 mai, 2006 20:02 À : Repeater-Builder@yahoogroups.com Objet : [Repeater-Builder] Power Supply Does anyone have the schematic from an Astron RM-50M that they can scan and email to me? Yes, I've already called Astron. If any member of this list can scan and email the schematic it would be appreciated. A common file type like .doc or .pdf is preferred. Thanks, Gary Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.7.1/348 - Release Date: 2006-05-25 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.7.1/348 - Release Date: 2006-05-25 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] Quick GMRS repeater w/ Radius m10 and RICK
Jan Each radio should be put onto it's own simplex Fq, not a repeater pair. Be very careful when hooking up the RICK. I have two radios sitting in the shop right now because an employee thought it would be fun to play with the connction cables on two repeaters. Then he didn't remember what went where, then he fried two radios, then he was on unemployment, then he lost his house, then.. well, you see how bad it can get. As far as the rick working out of the box. I DON"T KNOW I have tried to find a manual for them online everywhere and no luck. hope some of that helps. Take care and 73's Dan Ryant - KF6ZJDN6YV [EMAIL PROTECTED] wrote: Greetings to the group. I want to construct a quick GMRS repeater withtwo Radius m10 radios and a Rick unit. The M10 radios are singlechannel units with 16pin connectors. Do I program them as conventionalradios and then plug them into the rick or do I program them asrepeaters in the RSS. I'm a little confused by that. Also, Is therick ready to go out of the box? It is a new unit but had nodocumentation in the box. Thanks for any help.JanYahoo! 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/ Talk is cheap. Use Yahoo! Messenger to make PC-to-Phone calls. Great rates starting at 1/min. 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] DC INJECTOR AND PREAMP
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/
[Repeater-Builder] burndept be527 trainsmitter
hi can any 1 help me ?i have a burndept be 527 transmiter ?its vhf ex police ,any one got any info on it it as an eprom for the freqs. 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] Re: Looking for a Site for our new club repeater
I thought Florida was so flat, you didn't need anything higher than 30 ft?!?!?! Actually the trees at the signal killers here !! 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 repeater interface cable info
Please forgive me if this message is out of subject. I am trying everything to locate this info and apologize if this message is out of subject. Scott Hi All, Well I finnally did it ! I have rid myself of most of my Motorola eqpt ! I am now in the process of stocking up on Icom and I am in need of some info about Icom mobil's. I am looking for the part number ( or cable pinout ) of the cable used to connect 2 Icom mobils together for repeater operation. The old Moto name would be a rick cable. I have searched hi and lo looking for the cable or the pinout and can only find references to it. I am trying to connect 2 F121 mobils and 2 F222 mobils for repeater use . I have found a company that does offer a cable for 150.00 but can find no other info on this or the factory cable . Can anyone help with this problem. Thanks to all, Scott 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] Re: White Noise on Two Meters.....
Gary- This is going to sound a little simple-ish, but have you disconnected the receive antenna to see if the noise is still there with no antenna? This will instantly indicate whether the signal is strong enough to be coming directly into/overloading the receiver front end. If it goes away when you pull the antenna off the receiver, then you can apply the techniques others have suggested (DF, filters, etc.). If it DOES NOT go away when you disconnect the RX antenna, then you have something seriously strong getting directly into the receiver front end (or a defective receiver stage). - Mark WB2ULR -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Gary Sent: Thursday, May 25, 2006 1:48 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] White Noise on Two Meters. I have an interesting thing happening on our two meter repeater. We have what appears to be a blanking white noise that is present on the input. The repeater is a split site system with a 440 link from the two meter receiver site over to the transmitter site about 2000ft away. There are no duplexers in the system to cause problems. The link on 440 is clean of any noise, so we are quite confident the link is not a problem. On two meters, when a signal is anything less than full quieting, we get a white noise that will almost mask the audio. We have tried different receivers such as the GE MVS and now a GE Master II. We have removed the preamplifier with minimal results. The receivers have excellent sensitivity and the tuning process of the receivers is correct. We have also tried putting pass cavities ahead of the receiver with no appreciable change. The antenna is a DB-224 mounted on a broadcast tower just below the bays of an FM broadcast commercial transmitter. We have turned OFF the fm broadcast transmitter at times to check if perhaps this was the problem but no change was noted. ANY IDEAS from anyone??? THANKS! Gary - W5GNB 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/
[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 VA6AE 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] Need source for RF RCA connectors
Bob: I think that I have a number of the connectors that you need. Correct me if I am wrong, but the jumpers that you want come in two sizes on the mastr II. They both have rca connectors on one and a chassis so239 on the other end for the rf output. If you think that these are the right jumpers let me know how many and which one(s) that you need and I would be glad to send them to you . 73's David K8ELS - Original Message - From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Sunday, May 28, 2006 12:43 AM Subject: [Repeater-Builder] Need source for RF RCA connectors My stock of RF RCA connectors (the ones used for carrying RF inside GE MVPs, Mastr IIs etc.) has run dry, I haven't seen any at our local swap meets. Anyone know where I can find these? Thanks. Bob NO6B 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/
[Repeater-Builder] Wount To Find Out About Buiding A New Repeter
Date :05-29-2006 Time :8:00 PM CST From :Lige Turner Repeter-Builder I,m Am A GMRS Radio Operater And I Would Like More On How To Build A UHF-FM Land Mobile Radio(LMR)Repeter That Will Put Out 100 Watts ERP Output And Would Work On The Input Frequency 462.675 Mhz CTCSS Tones 141.3 Hz And Output Frequency 467.675 Mhz With A CTCSS Tone 141.3 Hz And The Repeter Controle I Would Reather Not Have Any DTMF Tone Cods Becose Some One Here In Kansas City Missouri Has A Tone Burst System And Has Try To Get Into My Low Power Repeter Whitch Is Only 25 Watts ERP Low Power Yes This Is For The Emergency Frequency On GMRS Radio My Call Sine KAF-2106 And I,M The Head Of A Not-For-Profit Organization National Emergency Assistance Radio Team,Inc. I Will Probley Buy The Parts One At A Time Becose Of How Much The Cost Of What I Need To Build A Good Repeter It May Take A While To Get It On The Air And Shut This 25 Watt ERP Repeter Down Lige Turner KAF-2106 73 All 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] DC INJECTOR AND PREAMP
No. You WILL NOT be able to run a preamp. You will have to compensate for the loss by running big hardline. Stop and think. How can the inline preamp amplify an incoming signal with 20-30 watts coming up its input? danryant 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 -- Jay UrishNetwork Administrator Unixwolf Enterprises LLC. http://www.unixwolf.net 972.691.0125972.965.6229 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] DC INJECTOR AND PREAMP
With a single antenna in full duplex, the answer is no. 73, Dick - Original Message - From: danryant To: Repeater-Builder@yahoogroups.com Sent: 26 May, 2006 16:03 Subject: [Repeater-Builder] DC INJECTOR AND PREAMP 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/ 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?
That seems like a LOT of loss... Have you had the cans and antenna(s) tuned? -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] 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 VA6AE 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] 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.
[Repeater-Builder] Re: DC INJECTOR AND PREAMP
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 [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/
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.
[Repeater-Builder] Re: Double the gain or double the power?
Yes, I was using the Top Half of a 4-element antenna. I have now added the 3-Way connector and now have the entire antenna connected. I have noticed it has cleaned up the receive on week stations but, it seems to have dropped a little in the signal. System was just re-tuned, duplexers and radios. It's a Motorola MSR-2000 Canadian 40 Watt version. When I add the duplexers and the top half of the antenna I get 25 Watts out. When I add the second half 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 a hill overlooking the City. I wish it was a little higher however, that is not possible at this time. Thanks Aaron VA6AE --- 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 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:[EMAIL PROTECTED] 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 VA6AE Yahoo! Groups Links 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/
[Repeater-Builder] Problems with RC210 and Echolink
Folks, Ken and I have been chatting about my problem. I have a VA3TO (DRF Technologies) Echolink Interface. It is configured to port 3 on the RC210. PTT and COS lines are crossed as well as the audio. The macro is set to link port 3 to port 1 and to unlink it when I don't want Echolink working. The PTT light on Port 3 stays on all the time... Plus, the controller loses its mind when I engage the macro I can disconnect the ptt and cos lines, then the light goes out, but the controller still won't work right when I engage the macro.not until I disconnect the audio line going into the VA3TO box Plus, the controller comes unlocked. I have to hit # and relock the controller and then all is well.Any ideas? Any of you using this combination? Thanks, Ron 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: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006
RE: [Repeater-Builder] Re: Double the gain or double the power?
Yes, I was using the Top Half of a 4-element antenna. I have now added the 3-Way connector and now have the entire antenna connected. I have noticed it has cleaned up the receive on week stations but, it seems to have dropped a little in the signal. System was just re-tuned, duplexers and radios. It's a Motorola MSR-2000 Canadian 40 Watt version. When I add the duplexers and the top half of the antenna I get 25 Watts out. When I add the second half I get 10 Watts out. Measuring the wattage just after the duplexers. This doesn't make sense. The transmitter output shouldn't be changing. It sounds to me like when the second set of bays was connected it wasn't done with a proper matching/phasing harness, but rather just by teeing the two halfs together. This would throw the match off (a 2:1 VSWR mismatch best-case), which results in a detuning effect at the duplexer which makes its insertion loss go up, which is why you're seeing less TPO. Have you measured the reflected power at the antenna both before and after adding the second set of bays (or if you can't measure at the antenna, measure at the output of the duplexer and tell us what kind/how long your feedline is and we can back-calculate from that). Also, what band is this repeater on? --- Jeff -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006 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] 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.
[Repeater-Builder] Re: Double the gain or double the power?
Yes I have to add a tee for the bottom half. The entire antenna is one complete unit 4-folded dipoles. Maybe I assumed and thought all the phasing harness's were already there as I can see where the splits are on the coax. It is a VHF system. I am measuring from out of the duplexers up the LMR-400 cable and not at the top. --- In Repeater-Builder@yahoogroups.com, 'Jeff DePolo' [EMAIL PROTECTED] wrote: Yes, I was using the Top Half of a 4-element antenna. I have now added the 3-Way connector and now have the entire antenna connected. I have noticed it has cleaned up the receive on week stations but, it seems to have dropped a little in the signal. System was just re-tuned, duplexers and radios. It's a Motorola MSR-2000 Canadian 40 Watt version. When I add the duplexers and the top half of the antenna I get 25 Watts out. When I add the second half I get 10 Watts out. Measuring the wattage just after the duplexers. This doesn't make sense. The transmitter output shouldn't be changing. It sounds to me like when the second set of bays was connected it wasn't done with a proper matching/phasing harness, but rather just by teeing the two halfs together. This would throw the match off (a 2:1 VSWR mismatch best-case), which results in a detuning effect at the duplexer which makes its insertion loss go up, which is why you're seeing less TPO. Have you measured the reflected power at the antenna both before and after adding the second set of bays (or if you can't measure at the antenna, measure at the output of the duplexer and tell us what kind/how long your feedline is and we can back-calculate from that). Also, what band is this repeater on? --- Jeff -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006 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] Re: Double the gain or double the power?
Yes I have to add a tee for the bottom half. The entire antenna is one complete unit 4-folded dipoles. Maybe I assumed and thought all the phasing harness's were already there as I can see where the splits are on the coax. What kind of antenna is it? I am measuring from out of the duplexers up the LMR-400 cable and not at the top. How long is the run of LMR400? -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006 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] Re: Double the gain or double the power?
Commercial antenna *unknown, with 80' LMR-400 I have another set of antenna's (Just 2 folded dipoles) and I can change it out to see if that makes a difference. Strange, I did try it with a full wave ringo-ranger and I still lose about 20 watts through the duplexers. Aaron --- In Repeater-Builder@yahoogroups.com, 'Jeff DePolo' [EMAIL PROTECTED] wrote: Yes I have to add a tee for the bottom half. The entire antenna is one complete unit 4-folded dipoles. Maybe I assumed and thought all the phasing harness's were already there as I can see where the splits are on the coax. What kind of antenna is it? I am measuring from out of the duplexers up the LMR-400 cable and not at the top. How long is the run of LMR400? -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006 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] Re: Double the gain or double the power?
First check the VSWR. (it may be going up when you add the second set of elements, the harness must be done correctly for the VSWR to stay low) If the VSWR is OK or things are corrected so it seems OK then retune the duplexer using a Spectrum Analyzer and Return Loss Bridge. Do this with the antenna connected so the duplexer is matched to the antenna system. Paul, kb9wlc --- 'Jeff DePolo' [EMAIL PROTECTED] wrote: Yes I have to add a tee for the bottom half. The entire antenna is one complete unit 4-folded dipoles. Maybe I assumed and thought all the phasing harness's were already there as I can see where the splits are on the coax. What kind of antenna is it? I am measuring from out of the duplexers up the LMR-400 cable and not at the top. How long is the run of LMR400? -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006 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 * 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] Re: Double the gain or double the power?
I can't measure the reflected power. I can measure SWR and that is flat. I am going to change it to another pair of folded dipoles and see if it changes anything. Aaron --- In Repeater-Builder@yahoogroups.com, Steve Bosshard (NU5D) [EMAIL PROTECTED] wrote: 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 NU5D On 5/30/06, atms169 [EMAIL PROTECTED] wrote: Yes, I was using the Top Half of a 4-element antenna. I have now added the 3-Way connector and now have the entire antenna connected. I have noticed it has cleaned up the receive on week stations but, it seems to have dropped a little in the signal. System was just re-tuned, duplexers and radios. It's a Motorola MSR-2000 Canadian 40 Watt version. When I add the duplexers and the top half of the antenna I get 25 Watts out. When I add the second half 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 a hill overlooking the City. I wish it was a little higher however, that is not possible at this time. Thanks Aaron VA6AE --- In Repeater-Builder@yahoogroups.com, Steve Bosshard (NU5D) bosshard@ 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 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 kb6zop@ 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:[EMAIL PROTECTED] 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 VA6AE Yahoo! Groups Links Yahoo! Groups Links -- Ham Radio Spoken Here.NU5D 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/
[Repeater-Builder] Re: DC INJECTOR AND PREAMP
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) [EMAIL PROTECTED] 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 [EMAIL PROTECTED] 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 danryant@ 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 -- 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/
[Repeater-Builder] Re: Double the gain or double the power?
I'd have to reverse items one and two... but they are both the big ticket and interplay quite a bit. Antenna gain is the major performance free lunch you can add to a radio system and probably the best bang for the buck. cheers, skipp #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... 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] Re: Wount To Find Out About Buiding A New Repeter
Last time I checked Part 95 it said 50w max. from the tansmitter not 50w ERP from the antenna. When did it change? With the min. losses for the duplexer,connecters and feedline and max, gain on antenna and radiation pattern he could achieve 200w ERP or more. Doug N3DAB/WPRX486 GMRS/WPJL709 LM --- In Repeater-Builder@yahoogroups.com, Vincent Caruso [EMAIL PROTECTED] wrote: Problem #1 is that on 462.675 / 467.675 GMRS you cannot go over 50 watts ERP with a proper antenna system you should be able to achieve 50Watts ERP with your current machine. Problem #2 is that you cannot reverse the input /output on repeater pairs since it will wreak all sorts of havoc with co-channel users and on GMRS there are probably lots of them. If you are an emergency response entity that needs that type of output power, why not get a coordinated pair on special emergency or in the business band. National Emergency Assistance Radio Team Headquters wrote: Date :05-29-2006 Time :8:00 PM CST From :Lige Turner Repeter-Builder I,m Am A GMRS Radio Operater And I Would Like More On How To Build A UHF-FM Land Mobile Radio(LMR)Repeter That Will Put Out 100 Watts ERP Output And Would Work On The Input Frequency 462.675 Mhz CTCSS Tones 141.3 Hz And Output Frequency 467.675 Mhz With A CTCSS Tone 141.3 Hz And The Repeter Controle I Would Reather Not Have Any DTMF Tone Cods Becose Some One Here In Kansas City Missouri Has A Tone Burst System And Has Try To Get Into My Low Power Repeter Whitch Is Only 25 Watts ERP Low Power Yes This Is For The Emergency Frequency On GMRS Radio My Call Sine KAF-2106 And I,M The Head Of A Not-For-Profit Organization National Emergency Assistance Radio Team,Inc. I Will Probley Buy The Parts One At A Time Becose Of How Much The Cost Of What I Need To Build A Good Repeter It May Take A While To Get It On The Air And Shut This 25 Watt ERP Repeter Down Lige Turner KAF-2106 73 All 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] Re: Double the gain or double the power?
Hi 20w loss through the duplexer is a huge ammount, have you measured the foward and reverse pwr of your ant, ideally a good ant should be almost 1 to 1. Steve - Original Message - From: atms169 [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Tuesday, May 30, 2006 6:45 PM Subject: [Repeater-Builder] Re: Double the gain or double the power? Commercial antenna *unknown, with 80' LMR-400 I have another set of antenna's (Just 2 folded dipoles) and I can change it out to see if that makes a difference. Strange, I did try it with a full wave ringo-ranger and I still lose about 20 watts through the duplexers. Aaron --- In Repeater-Builder@yahoogroups.com, 'Jeff DePolo' [EMAIL PROTECTED] wrote: Yes I have to add a tee for the bottom half. The entire antenna is one complete unit 4-folded dipoles. Maybe I assumed and thought all the phasing harness's were already there as I can see where the splits are on the coax. What kind of antenna is it? I am measuring from out of the duplexers up the LMR-400 cable and not at the top. How long is the run of LMR400? -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006 Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 29/05/06 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] Wount To Find Out About Buiding A New Repeter
National Emergency Assistance Radio Team Headquters wrote: Date :05-29-2006 Time :8:00 PM CST From :Lige Turner Repeter-Builder I,m Am A GMRS Radio Operater And I Would Like More On How To Build A UHF-FM Land Mobile Radio(LMR)Repeter That Will Put Out 100 Watts ERP Output And Would Work On The Input Frequency 462.675 Mhz CTCSS Tones 141.3 Hz And Output Frequency 467.675 Mhz With A CTCSS Tone 141.3 Hz This is virtually unreadable, but what I can read is there are several legal errors. The input frequency will be 467.xxx and the output will be 462.xxx. Also you cannot run more then 50 watts out of the transmitter. These are both set in Part 95 of the FCC rules. I suggest you get a copy from the FCC website. It is downloadable. -- Jim Barbour WD8CHL KAE9169 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] Re: Double the gain or double the power?
Yes I have to add a tee for the bottom half. That's your problem. You need the specific harness for a 4-bay antenna. It will have the connector you connect to, which will split into two paths, then further down each one will split again. Tee connectors will cut the impedance in half. If you have to add one, you are using the wrong harness. -- 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] Re: Double the gain or double the power?
to me this does not make sence ... what power do you get out of the duplexer with a dummy load on .. I think you have a problem with the ant. I don't see why you would lose so much power out of the duplexer when you add the 2nd set of dipoles .. Rick On 30 May 2006 at 16:55, atms169 wrote: System was just re-tuned, duplexers and radios. It's a Motorola MSR-2000 Canadian 40 Watt version. When I add the duplexers and the top half of the antenna I get 25 Watts out. When I add the second half 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 a hill overlooking the City. I wish it was a little higher however, that is not possible at this time. Thanks Aaron VA6AE --- 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 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:[EMAIL PROTECTED] 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 VA6AE Yahoo! Groups Links Yahoo! Groups Links -- Ham Radio Spoken Here.NU5D Yahoo! Groups Links == www.karolinabc.ca == Rick,Charlote Kids Our Border Collies Miss Daisy Duke Sir Red-A-Lot Miss Elly May Mr Boots Our Border Collie Message Group [EMAIL PROTECTED] Website www.karolinabc.ca 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] Re: Double the gain or double the power?
Alright for all those that think I'm an idiot, it's true I am! I went back up to the repeater site and did some testing. I did find that there was some water in the coax. I blew it out and re-sealed the connectors. Now I am back up to 22-25 watts with a 1.1 match on the 4 antenna's. So I am still losing 20 watts somewhere??? I tried the vertical full wave antenna I had laying at the site and it also gives me 25 watts out. So I am losing almost half through the duplexers. This is strange to me, mind you I am losing about 3db in the duplexers so that is half. --- In Repeater-Builder@yahoogroups.com, Jim B. [EMAIL PROTECTED] wrote: Yes I have to add a tee for the bottom half. That's your problem. You need the specific harness for a 4-bay antenna. It will have the connector you connect to, which will split into two paths, then further down each one will split again. Tee connectors will cut the impedance in half. If you have to add one, you are using the wrong harness. -- 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] Arcom RC-110 Yahoo Group
At 02:21 PM 5/29/2006 -0500, you wrote: Anyone know what has happened to the RC-110 Group? Wonder if it is a personal problem or has the group been disbanded? ---Sorry Jim! As other pointed out, I had been in Dayton and notification from Yahoogroups about your attempt to join the list were missed. Write me directly with any other questions you may have. Ken -- President and CTO - Arcom Communications Makers of the world famous RC210 Repeater Controller and accessories. http://www.ah6le.net/arcom/index.html Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net 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] Re: Double the gain or double the power?
if you are loosing 3db in the duplexer then thay are out of wack but you said thay where tuned .. 2 there is STILL a problem in the coax 3 there could be a problem in the ant connectors check the specks on the duplexer when you got it tuned it should show you how much loss and again CHECK with a good dummy load to make sure its from the duplexer up On 30 May 2006 at 19:54, atms169 wrote: Alright for all those that think I'm an idiot, it's true I am! I went back up to the repeater site and did some testing. I did find that there was some water in the coax. I blew it out and re-sealed the connectors. Now I am back up to 22-25 watts with a 1.1 match on the 4 antenna's. So I am still losing 20 watts somewhere??? I tried the vertical full wave antenna I had laying at the site and it also gives me 25 watts out. So I am losing almost half through the duplexers. This is strange to me, mind you I am losing about 3db in the duplexers so that is half. --- In Repeater-Builder@yahoogroups.com, Jim B. [EMAIL PROTECTED] wrote: Yes I have to add a tee for the bottom half. That's your problem. You need the specific harness for a 4-bay antenna. It will have the connector you connect to, which will split into two paths, then further down each one will split again. Tee connectors will cut the impedance in half. If you have to add one, you are using the wrong harness. -- Jim Barbour WD8CHL Yahoo! Groups Links == www.karolinabc.ca == Rick,Charlote Kids Our Border Collies Miss Daisy Duke Sir Red-A-Lot Miss Elly May Mr Boots Our Border Collie Message Group [EMAIL PROTECTED] Website www.karolinabc.ca 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] Re: Double the gain or double the power?
atms169 wrote: Alright for all those that think I'm an idiot, it's true I am! I went back up to the repeater site and did some testing. I did find that there was some water in the coax. I blew it out and re-sealed the connectors. Now I am back up to 22-25 watts with a 1.1 match on the 4 antenna's. So I am still losing 20 watts somewhere??? AH HAH!!! heh, that'll do it every time! I tried the vertical full wave antenna I had laying at the site and it also gives me 25 watts out. So I am losing almost half through the duplexers. This is strange to me, mind you I am losing about 3db in the duplexers so that is half. For a 2M duplexer, some really are that high loss. 2.2-2.5dB is common. One of the problems with 2M is the close (.6 Mhz) in/out spacing. To get the isolation needed, you wind up with more insertion loss in the duplexer (long story short). On higher bands, you can get the required isolation much easier, since there is natural isolation with wider frequency spreads. Did that make sense??? -- 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] Re: Double the gain or double the power?
Hi getting there. If your coax had water in it, really you should replace it. I take it that without the duplexer you are getting full power, if so your duplexer is probably in need of tuning as it sounds like it is actualy tuned to drop power on the tx leg and not on the rx. Steve - Original Message - From: atms169 [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Tuesday, May 30, 2006 8:54 PM Subject: [Repeater-Builder] Re: Double the gain or double the power? Alright for all those that think I'm an idiot, it's true I am! I went back up to the repeater site and did some testing. I did find that there was some water in the coax. I blew it out and re-sealed the connectors. Now I am back up to 22-25 watts with a 1.1 match on the 4 antenna's. So I am still losing 20 watts somewhere??? I tried the vertical full wave antenna I had laying at the site and it also gives me 25 watts out. So I am losing almost half through the duplexers. This is strange to me, mind you I am losing about 3db in the duplexers so that is half. --- In Repeater-Builder@yahoogroups.com, Jim B. [EMAIL PROTECTED] wrote: Yes I have to add a tee for the bottom half. That's your problem. You need the specific harness for a 4-bay antenna. It will have the connector you connect to, which will split into two paths, then further down each one will split again. Tee connectors will cut the impedance in half. If you have to add one, you are using the wrong harness. -- Jim Barbour WD8CHL Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.8.0/352 - Release Date: 30/05/06 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] Problems with RC210 and Echolink
I interfaced an RC-210 port 3 to EchoLink for a friend, and had no problem with the interface. The RC-210 was missing a land in the audio path for port 3 and we had to add a wire jumper on the RC-210 board to correct that, but the interface to EchoLink worked with no problem. We used a direct interface, (No VA3 board) and used a simple transistor switch to couple PTT from the 210 to the RS-232 port for EchoLink, and another switch was used from the PTT line from EchoLink to the COS input of the 210. DTMF works better in the sound card than with the VA3 board anyway. You have more control of the audio response for the DTMF decode in the EchoLink program. We did add 600:600 ohm isolation transformers in both transmit and receive lines to eliminate any local ground loops, and this always pays. The VA3 board does not isolate the audio lines and leaves you wide open to ground loop problems back in the 210 as well as the computer. With a repeater on line, considerable current could be drawn through the external ground system if the audio path is not isolated with the transformers. This is probably why your 210 is going into unlock mode - currents through the ground paths inside the controller couple to the processor. W5TWY-L runs a 440 repeater on port 1, a two meter simplex channel on port 2, and EchoLink on port 3. It has been in service for over a year using an RC-210 with no problems. 73 - Jim W5ZIT Folks, Ken and I have been chatting about my problem. I have a VA3TO (DRF Technologies) Echolink Interface. It is configured to port 3 on the RC210. PTT and COS lines are crossed as well as the audio. The macro is set to link port 3 to port 1 and to unlink it when I don't want Echolink working. The PTT light on Port 3 stays on all the time... Plus, the controller loses its mind when I engage the macro I can disconnect the ptt and cos lines, then the light goes out, but the controller still won't work right when I engage the macro.not until I disconnect the audio line going into the VA3TO box Plus, the controller comes unlocked. I have to hit # and relock the controller and then all is well.Any ideas? Any of you using this combination? Thanks, Ron 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] Problems with RC210 and Echolink
At 03:53 PM 5/30/2006 -0500, you wrote: I interfaced an RC-210 port 3 to EchoLink for a friend, and had no problem with the interface. The RC-210 was missing a land in the audio path for port 3 and we had to add a wire jumper on the RC-210 board to correct that, but the interface to EchoLink worked with no problem. ---For the record, that pc board issue has long since been corrected and that certainly isn't an issue for Ron :-) Ron asked me about Hugh's board elsewhere list but I am not familiar enough with it to offer an opinion. About the only thing I could think of is that it is somehow miswired into the controller (the PTT LED being lit all the time when connected to Hugh's box is a dead giveaway in my mind) but again, I don't have enough experience with the interface to say for sure. Ken Ken -- President and CTO - Arcom Communications Makers of the world famous RC210 Repeater Controller and accessories. http://www.ah6le.net/arcom/index.html Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net 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] Re: Double the gain or double the power?
I can't measure the reflected power. I can measure SWR and that is flat. You said you had a wattmeter to measure your power output - why can't you use it to measure the reflected power? -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006 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 VHF Engineering 220 amp schematic # BLD 10/120
A buddy gave me a defective 220 amp, the VHF Engineering BLD 10/120. Anybody have a scematic for this thing? Thanks, dave NA6DF 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] Re: Wount To Find Out About Buiding A New Repeter
It hasn't changed. Some people get confused about the difference between ERP and straight RF power. Johnny n3dab wrote: Last time I checked Part 95 it said 50w max. from the tansmitter not 50w ERP from the antenna. When did it change? With the min. losses for the duplexer,connecters and feedline and max, gain on antenna and radiation pattern he could achieve 200w ERP or more. Doug N3DAB/WPRX486 GMRS/WPJL709 LM --- In Repeater-Builder@yahoogroups.com, Vincent Caruso [EMAIL PROTECTED] wrote: Problem #1 is that on 462.675 / 467.675 GMRS you cannot go over 50 watts ERP with a proper antenna system you should be able to achieve 50Watts ERP with your current machine. Problem #2 is that you cannot reverse the input /output on repeater pairs since it will wreak all sorts of havoc with co-channel users and on GMRS there are probably lots of them. If you are an emergency response entity that needs that type of output power, why not get a coordinated pair on special emergency or in the business band. National Emergency Assistance Radio Team Headquters wrote: Date :05-29-2006 Time :8:00 PM CST From :Lige Turner Repeter-Builder I,m Am A GMRS Radio Operater And I Would Like More On How To Build A UHF-FM Land Mobile Radio(LMR)Repeter That Will Put Out 100 Watts ERP Output And Would Work On The Input Frequency 462.675 Mhz CTCSS Tones 141.3 Hz And Output Frequency 467.675 Mhz With A CTCSS Tone 141.3 Hz And The Repeter Controle I Would Reather Not Have Any DTMF Tone Cods Becose Some One Here In Kansas City Missouri Has A Tone Burst System And Has Try To Get Into My Low Power Repeter Whitch Is Only 25 Watts ERP Low Power Yes This Is For The Emergency Frequency On GMRS Radio My Call Sine KAF-2106 And I,M The Head Of A Not-For-Profit Organization National Emergency Assistance Radio Team,Inc. I Will Probley Buy The Parts One At A Time Becose Of How Much The Cost Of What I Need To Build A Good Repeter It May Take A While To Get It On The Air And Shut This 25 Watt ERP Repeter Down Lige Turner KAF-2106 73 All 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] Re: Wount To Find Out About Buiding A New Repeter
I didn't think so... Johnny wrote: It hasn't changed. Some people get confused about the difference between ERP and straight RF power. Johnny n3dab wrote: Last time I checked Part 95 it said 50w max. from the tansmitter not 50w ERP from the antenna. When did it change?With the min. losses for the duplexer,connecters and feedline and max, gain on antenna and radiation pattern he could achieve 200w ERP or more. Doug N3DAB/WPRX486 GMRS/WPJL709 LM --- In Repeater-Builder@yahoogroups.com, Vincent Caruso [EMAIL PROTECTED] wrote: Problem #1 is that on 462.675 / 467.675GMRS you cannot go over 50 watts ERPwith a proper antenna system you should be able to achieve 50Watts ERP with your current machine. Problem #2 is that you cannot reverse the input /output on repeater pairs since it will wreak all sorts of havoc with co-channel users and on GMRS there are probably lots of them. If you are an emergency response entity that needs that type of output power, why not get a coordinated pair on special emergency or in the business band. National Emergency Assistance Radio Team Headquters wrote: Date :05-29-2006 Time :8:00 PM CST From :Lige Turner Repeter-Builder I,m Am A GMRS Radio Operater And I Would Like More On How To Build A UHF-FM Land Mobile Radio(LMR)Repeter That Will Put Out 100 Watts ERP Output And Would Work On The Input Frequency 462.675 Mhz CTCSS Tones 141.3 Hz And Output Frequency 467.675 Mhz With A CTCSS Tone 141.3 Hz And The Repeter Controle I Would Reather Not Have Any DTMF Tone Cods Becose Some One Here In Kansas City Missouri Has A Tone Burst System And Has Try To Get Into My Low Power Repeter Whitch Is Only 25 Watts ERP Low Power Yes This Is For The Emergency Frequency On GMRS Radio My Call Sine KAF-2106 And I,M The Head Of A Not-For-Profit Organization National Emergency Assistance Radio Team,Inc. I Will Probley Buy The Parts One At A Time Becose Of How Much The Cost Of What I Need To Build A Good Repeter It May Take A While To Get It On The Air And Shut This 25 Watt ERP Repeter Down Lige Turner KAF-2106 73 All 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/ 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: S-COM 7330 First Look!
It looks great Bob... can't wait to see when they become available for sale. I'll probably be right there at the order desk when they're ready. The nice part about you repeater controller guys is there's almost no work involved to make the box and write the software... arr... arr... cheers, skipp [EMAIL PROTECTED] wrote: At last, photos and hard data on the 7330 at _http://www.scomcontrollers.com_ (http://www.scomcontrollers.com/) ! Please check out the New Directions paper as well as the other new material. It discusses the philosophies behind this new line of controllers and helps show why the project has taken so much well-spent time! We'll be adding more data to the site in the next few days. My thanks to Kevin for allowing us to make these announcements on the Repeater Builder list. 73, Bob Bob Schmid, WA9FBO, Member S-COM, LLC PO Box 1546 LaPorte CO 80535-1546 970-416-6505 voice 970-419-3222 fax _www.scomcontrollers.com_ (http://www.scomcontrollers.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/
Re: [Repeater-Builder] Re: S-COM 7330 First Look!
Hi Skipp, It looks great Bob... can't wait to see when they become available for sale. I'll probably be right there at the order desk when they're ready. The nice part about you repeater controller guys is there's almost no work involved to make the box and write the software... Uh-oh, he's on to us... 73, Bob 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
It's RV season again here in Connecticut and I'm expecting a few of these to roll into the area on their way to the casinos near our sites. The tough part is that they only tend to stay a short time before they run out of money and leave. Hard to find. The problem seems to be worse when the TV is not connected to the antenna. Some RVers stow their TV when they travel, but the antenna may still be connected to the power source. The combination of an unterminated coax and the high gain of the antenna makes a good feedback loop for oscillation to occur. 73, Joe, K1ike Andrew [EMAIL PROTECTED] wrote: This is the antenna that was causing interference :- http://www.winegard.com/interference.htm There was also an ARRL article floating around a while back. Andrew -- --- KC2EUS - GM1YMI KC2EUS/R 443.700 MHz 100 Hz PL IRLP #4925 Elink #9969 www.kc2eus.org www.kc2eus.org/sota --- Steve Bosshard (NU5D) wrote: 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. 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] DC INJECTOR AND PREAMP
With money, the answer is yes. TX RX Systems makes a tower top amplifier that will do this, but prepare to spend a lot of money. But, I wouldn't recommend it because you would have an imbalance between receive and transmit unless you run the proper amount of repeater transmit power to match the increased receiver sensitivity. 73, Joe, K1ike Dick [EMAIL PROTECTED] wrote: With a single antenna in full duplex, the answer is no. 73, Dick 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] Re: Wount To Find Out About Buiding A New Repeter
You can go to the FCC site and pull Part 95 like I just did and read it for yourself. I'm running 50w from my Micor rptr. xmtr. with 1.5db loss from a MOt. 1504 duplexer into 50' of 1/2' LDF4-50 heliax to a DB410 9.2db gain omni antenna. This all calculates out to approx. slightly more than 250W ERP. This machine has been in service for at least 25 years on 462/467. 675 in the Atlanta Ga. area N3DAB/WPRX486 GMRS/WPJL709 LM --- In Repeater-Builder@yahoogroups.com, Vincent Caruso [EMAIL PROTECTED] wrote: I didn't think so... Johnny wrote: It hasn't changed. Some people get confused about the difference between ERP and straight RF power. Johnny n3dab wrote: Last time I checked Part 95 it said 50w max. from the tansmitter not 50w ERP from the antenna. When did it change? With the min. losses for the duplexer,connecters and feedline and max, gain on antenna and radiation pattern he could achieve 200w ERP or more. Doug N3DAB/WPRX486 GMRS/WPJL709 LM --- In Repeater-Builder@yahoogroups.com, Vincent Caruso vcaruso@ wrote: Problem #1 is that on 462.675 / 467.675 GMRS you cannot go over 50 watts ERP with a proper antenna system you should be able to achieve 50Watts ERP with your current machine. Problem #2 is that you cannot reverse the input /output on repeater pairs since it will wreak all sorts of havoc with co-channel users and on GMRS there are probably lots of them. If you are an emergency response entity that needs that type of output power, why not get a coordinated pair on special emergency or in the business band. National Emergency Assistance Radio Team Headquters wrote: Date :05-29-2006 Time :8:00 PM CST From :Lige Turner Repeter-Builder I,m Am A GMRS Radio Operater And I Would Like More On How To Build A UHF-FM Land Mobile Radio(LMR)Repeter That Will Put Out 100 Watts ERP Output And Would Work On The Input Frequency 462.675 Mhz CTCSS Tones 141.3 Hz And Output Frequency 467.675 Mhz With A CTCSS Tone 141.3 Hz And The Repeter Controle I Would Reather Not Have Any DTMF Tone Cods Becose Some One Here In Kansas City Missouri Has A Tone Burst System And Has Try To Get Into My Low Power Repeter Whitch Is Only 25 Watts ERP Low Power Yes This Is For The Emergency Frequency On GMRS Radio My Call Sine KAF-2106 And I,M The Head Of A Not-For-Profit Organization National Emergency Assistance Radio Team,Inc. I Will Probley Buy The Parts One At A Time Becose Of How Much The Cost Of What I Need To Build A Good Repeter It May Take A While To Get It On The Air And Shut This 25 Watt ERP Repeter Down Lige Turner KAF-2106 73 All Yahoo! Groups Links 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/
[Repeater-Builder] Spectra-tac
I am looking for a print out of the TRN6091C Spectra-Tac Signal Quality module. If any one has a copy I will gladly pay for a copy or the cost to copy it along with the postage. This is the later verison of the SQM and I have check a couple sites with no luck. If someone has the the number to the manual that would help also. Thanks in advance Mike 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] Spectra-tac
Mike, Give Motorola a call at 800-422-4210 then follow prompt to PARTS ID. Give them the TRN part number and they will give you the manual number to order. Or You can give me a call at 214-671-9290 after 9:00 am and I will give you the manual number. I might be able to scan it and e-mail a copy. Charles Miller - Original Message - From: mike [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Tuesday, May 30, 2006 10:39 PM Subject: [Repeater-Builder] Spectra-tac I am looking for a print out of the TRN6091C Spectra-Tac Signal Quality module. If any one has a copy I will gladly pay for a copy or the cost to copy it along with the postage. This is the later verison of the SQM and I have check a couple sites with no luck. If someone has the the number to the manual that would help also. Thanks in advance Mike 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] Spectra-Tac
Mike, The TRN6091C SQM is completely covered in the SpectraTAC Comparator Reference Manual 6881039E50, which is still available from Motorola Parts for about $11. Call 800-422-4210 to order a copy of this very valuable manual. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of mike Sent: Tuesday, May 30, 2006 8:40 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Spectra-tac I am looking for a print out of the TRN6091C Spectra-Tac Signal Quality module. If any one has a copy I will gladly pay for a copy or the cost to copy it along with the postage. This is the later verison of the SQM and I have check a couple sites with no luck. If someone has the the number to the manual that would help also. Thanks in advance Mike Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Re: Wount To Find Out About Buiding A New Repeter
n3dab [EMAIL PROTECTED] wrote: You can go to the FCC site and pull Part 95 like I just did and read it for yourself. I'm running 50w from my Micor rptr. xmtr. with 1.5db loss from a MOt. 1504 duplexer into 50' of 1/2' LDF4-50 heliax to a DB410 9.2db gain omni antenna. This all calculates out to approx. slightly more than 250W ERP. This machine has been in service for at least 25 years on 462/467. 675 in the Atlanta Ga. area N3DAB/WPRX486 GMRS/WPJL709 LM Doug, Can you show us your formula for converting power output to ERP? I guess, power out(watts) - (1.5db)+(50' of LDF$-50)+9.2db=ERP output. More details please. Thanks. 73's, Jim Kh6jkg. __ Switch to Netscape Internet Service. As low as $9.95 a month -- Sign up today at http://isp.netscape.com/register Netscape. Just the Net You Need. New! Netscape Toolbar for Internet Explorer Search from anywhere on the Web and block those annoying pop-ups. Download now at http://channels.netscape.com/ns/search/install.jsp 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/
