[Repeater-Builder] cor location in an ic-2200h
Hi, I am building a portable repeater for our ARES Club. I have 2 Icom IC-2200H 2 mtr units, a ces rm-10 controller. I am new at this building, and cannot decipher the info given by the controller instructions. It advises to use the radio cor connection and here is where I'm stumped. It also wants a connection at the output of the discriminater circuit. I have been a tech over 35 years, this issue is causing my teeth to fall out, I already lost most of my hair. I would really appreciate any help you might have. 73==Dan w2rdt BTW: I know these are not the best units to work with. Financially right now, it is all we could afford.
Re: [Repeater-Builder] cor location in an ic-2200h
On Mar 15, 2010, at 11:33 PM, Russell wrote: Hi, I am building a portable repeater for our ARES Club. I have 2 Icom IC-2200H 2 mtr units, a ces rm-10 controller. I am new at this building, and cannot decipher the info given by the controller instructions. It will help if you'll tell us which controller it is. It advises to use the radio cor connection and here is where I'm stumped. A COR is any logic signal inside the radio that triggers when either the squelch is open, or probably better, whenever CTCSS is detected (if you're requiring CTCSS on your repeater). Some controllers take inputs for both as separate signals and let you then turn on/off the requirement for CTCSS in the controller by choosing which logic input to trigger off of, or my preference, logically AND'ing the signals together, meaning both COR/COS and CTCSS must be active from the repeater's receiver before the repeater will repeat. This signal, as in on most Amateur grade gear, is NOT available on any of the connectors of the IC-2200H, per the manual at http://www.icomamerica.com -- pages 1-5. The only way you'll find it is with a logic probe, oscilloscope, or similar and knowledge of the radio's schematic and internal layout, and you'll have to bring it out from inside the rig. There are MUCH easier options for this, including... - Use of the commercial Icom rigs. They have appropriate programming software and connectors for interfacing them to external hardware. - Maybe consider talking to the sponsors of this mailing list... Repeater-Builder The Company (TM? GRIN...) -- they make much higher quality repeaters out of older commercial gear than can be easily cobbled together from a couple of Amateur-grade mobiles. They can also discuss duplexer options, see below for more on that. It also wants a connection at the output of the discriminater circuit. A Discriminator circuit can be found in any FM/PM radio, it's the audio prior to being de-emphasized directly off of the circuit that detects it from the RF input. Most controllers will also work with regular audio from a speaker or better, some place in the radio that gives a constant audio level. (If you use the speaker circuit, someone might walk up and turn down the volume control and mess up your carefully set levels that provide correct deviation on your repeater transmitter that matches the deviation of the FM signal being received.) Again, need to know which controller you chose for your engineering project, and why... I have been a tech over 35 years, this issue is causing my teeth to fall out, I already lost most of my hair. Ahh, don't go that far. It's just a repeater! (GRIN) I would really appreciate any help you might have. 73==Dan w2rdt BTW: I know these are not the best units to work with. Financially right now, it is all we could afford. My bigger concern is, Why 2 meters? -- getting a duplexer that can handle a standard ham radio 600 KHz RX/TX split small enough to be portable is a pain, unless you're going to run a VERY low power level. You might have to look into doing a very non-standard and much wider split. This is why most people building portable repeaters are doing it up at UHF where the standard split is 5 MHz... Also if you haven't been perusing the Antenna, Duplexer, and other areas of www.repeater-builder.com -- definitely check those out. This I want to build a portable repeater question comes up so often, I wonder if someone has time to turn it into an article for RB... -- Nate Duehr, WY0X n...@natetech.com
Re: [Repeater-Builder] cor location in an ic-2200h
Russ, you may have to spend more on whatever you're using for power than you're saving with those radios, as they pull 1.6 amps combined even on standby receive. Also, develop a plan to keep the transmit radio's heatsink cooled, even in low power mode. But plunging ahead... Your controller can work with either COS (carrier-operated switch) or derive that signal itself. If you can find COS in the Icom radio, you don't need discriminator audio, and can couple audio from anyplace handy, including the external speaker jack if it won't be accessible to passersby. You will need to lift one side of a capacitor on the controller board to use de-emphasized, non-discriminator audio. On the other hand, if you can provide the controller discriminator audio, you don't need COS - the controller will make its own. The CES docs actually seem to favor this approach. The 2200 doesn't provide the needed signals on its accessory connector, but there are leftover pins there you could use to get disciminator audio and COS out of the radio cleanly. Get the owners and service manuals, available through online search. 73, Paul, AE4KR - Original Message - From: Russell To: Repeater-Builder@yahoogroups.com Sent: Monday, March 15, 2010 11:33 PM Subject: [Repeater-Builder] cor location in an ic-2200h Hi, I am building a portable repeater for our ARES Club. I have 2 Icom IC-2200H 2 mtr units, a ces rm-10 controller. I am new at this building, and cannot decipher the info given by the controller instructions. It advises to use the radio cor connection and here is where I'm stumped. It also wants a connection at the output of the discriminater circuit. I have been a tech over 35 years, this issue is causing my teeth to fall out, I already lost most of my hair. I would really appreciate any help you might have. 73==Dan w2rdt BTW: I know these are not the best units to work with. Financially right now, it is all we could afford.
Re: [Repeater-Builder] cor location in an ic-2200h
I completely missed that he said he was using a CES RM-10 controller. My bad. Nate
Re: [Repeater-Builder] cor location in an ic-2200h
Hi Paul, thank you very much. We are in our infancy and I had acess to these new units. The repeater will be used only for emergencies or sites needing communications. I have a much better idea where to go for the cor and discriminater now. I built a to go set up which has locks and I installed 2 fans just inches from the radios. I really appreciate the help. 73 russell w2rdt I look to the future because, that is where I will spend the rest of my life. From: Paul Plack pl...@xmission.com To: Repeater-Builder@yahoogroups.com Sent: Tue, March 16, 2010 3:42:03 AM Subject: Re: [Repeater-Builder] cor location in an ic-2200h Russ, you may have to spend more on whatever you're using for power than you're saving with those radios, as they pull 1.6 amps combined even on standby receive. Also, develop a plan to keep the transmit radio's heatsink cooled, even in low power mode. But plunging ahead... Your controller can work with either COS (carrier-operated switch) or derive that signal itself. If you can find COS in the Icom radio, you don't need discriminator audio, and can couple audio from anyplace handy, including the external speaker jack if it won't be accessible to passersby. You will need to lift one side of a capacitor on the controller board to use de-emphasized, non-discriminator audio. On the other hand, if you can provide the controller discriminator audio, you don't need COS - the controller will make its own. The CES docs actually seem to favor this approach. The 2200 doesn't provide the needed signals on its accessory connector, but there are leftover pins there you could use to get disciminator audio and COS out of the radio cleanly. Get the owners and service manuals, available through online search. 73, Paul, AE4KR - Original Message - From: Russell To: Repeater-Builder@ yahoogroups. com Sent: Monday, March 15, 2010 11:33 PM Subject: [Repeater-Builder] cor location in an ic-2200h Hi, I am building a portable repeater for our ARES Club. I have 2 Icom IC-2200H 2 mtr units, a ces rm-10 controller. I am new at this building, and cannot decipher the info given by the controller instructions. It advises to use the radio cor connection and here is where I'm stumped. It also wants a connection at the output of the discriminater circuit. I have been a tech over 35 years, this issue is causing my teeth to fall out, I already lost most of my hair. I would really appreciate any help you might have. 73==Dan w2rdt BTW: I know these are not the best units to work with. Financially right now, it is all we could afford.
Re: [Repeater-Builder] cor location in an ic-2200h
The controller is a CES RM-10 I look to the future because, that is where I will spend the rest of my life. From: Nate Duehr n...@natetech.com To: Repeater-Builder@yahoogroups.com Sent: Tue, March 16, 2010 3:20:48 AM Subject: Re: [Repeater-Builder] cor location in an ic-2200h On Mar 15, 2010, at 11:33 PM, Russell wrote: Hi, I am building a portable repeater for our ARES Club. I have 2 Icom IC-2200H 2 mtr units, a ces rm-10 controller. I am new at this building, and cannot decipher the info given by the controller instructions. It will help if you'll tell us which controller it is. It advises to use the radio cor connection and here is where I'm stumped. A COR is any logic signal inside the radio that triggers when either the squelch is open, or probably better, whenever CTCSS is detected (if you're requiring CTCSS on your repeater). Some controllers take inputs for both as separate signals and let you then turn on/off the requirement for CTCSS in the controller by choosing which logic input to trigger off of, or my preference, logically AND'ing the signals together, meaning both COR/COS and CTCSS must be active from the repeater's receiver before the repeater will repeat. This signal, as in on most Amateur grade gear, is NOT available on any of the connectors of the IC-2200H, per the manual at http://www.icomamerica.com -- pages 1-5. The only way you'll find it is with a logic probe, oscilloscope, or similar and knowledge of the radio's schematic and internal layout, and you'll have to bring it out from inside the rig. There are MUCH easier options for this, including... - Use of the commercial Icom rigs. They have appropriate programming software and connectors for interfacing them to external hardware. - Maybe consider talking to the sponsors of this mailing list... Repeater-Builder The Company (TM? GRIN...) -- they make much higher quality repeaters out of older commercial gear than can be easily cobbled together from a couple of Amateur-grade mobiles. They can also discuss duplexer options, see below for more on that. It also wants a connection at the output of the discriminater circuit. A Discriminator circuit can be found in any FM/PM radio, it's the audio prior to being de-emphasized directly off of the circuit that detects it from the RF input. Most controllers will also work with regular audio from a speaker or better, some place in the radio that gives a constant audio level. (If you use the speaker circuit, someone might walk up and turn down the volume control and mess up your carefully set levels that provide correct deviation on your repeater transmitter that matches the deviation of the FM signal being received.) Again, need to know which controller you chose for your engineering project, and why... I have been a tech over 35 years, this issue is causing my teeth to fall out, I already lost most of my hair. Ahh, don't go that far. It's just a repeater! (GRIN) I would really appreciate any help you might have. 73==Dan w2rdt BTW: I know these are not the best units to work with. Financially right now, it is all we could afford. My bigger concern is, Why 2 meters? -- getting a duplexer that can handle a standard ham radio 600 KHz RX/TX split small enough to be portable is a pain, unless you're going to run a VERY low power level. You might have to look into doing a very non-standard and much wider split. This is why most people building portable repeaters are doing it up at UHF where the standard split is 5 MHz... Also if you haven't been perusing the Antenna, Duplexer, and other areas of www.repeater- builder.com -- definitely check those out. This I want to build a portable repeater question comes up so often, I wonder if someone has time to turn it into an article for RB... -- Nate Duehr, WY0X n...@natetech. com
[Repeater-Builder] Standard RPT-20 Repeater Info Needed
I'm looking for information about the Standard RPT-20 Repeater. I would like to know the RPT-20s specifications and get a copy of the manual and/or service manual. If anyone has any of this information or a link to it please let me know. Thanks in advance. 73, Mark, WB9QZB
RE: [Repeater-Builder] Maxon sm4450ne
Ian, The SM-4450-NE is 488 to 512. If you program 517 you are out of band for that radio.. The ones I have are the NC 450-470 and two special order NB 420-450 radios. The NB are not available anymore. I know on the ones I have, when you get more than about 1 MHz out of band the PLL will unlock with error 3. I hope this helps. Charles Miller _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Ian Wells Sent: Monday, March 15, 2010 11:20 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Maxon sm4450ne Hi guys .I have a sm4450ne and I am having problems with setting it up for 507 and 517 mhz .I have set 2 up till now and they are working fine except these NE are having problems with the vco lock error 3 .I am wondering if anyone can shed some light .I can set it up for rx on 507 but it wont lock on transmitt. Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au http://www.kerinvalecomaudio.com.au/ faint_grain.jpg
Re: [Repeater-Builder] cor location in an ic-2200h
Thanks Nate, we are using radios at hand. we are a new club and are ARES in this county. I am building this unit just for call outs. We are using 2 mtr mainly due to not much activity on 70 ctmrs. I have built some cu copper 2mtr loops, I cannot believe the performance these little loops give out. Everything about this portable repeater is an adventure, I have hand made just about everything in this system. The cabinet has locks to keep wondering minds, dual fans, and a set of 100 amp gel cell batteries thrown in for power. Will always be with my truck, so I have power there as well. Your input is greatly appreciated. I will be sure to send back a report on how this works, or if it does not work. 73 russell w2rdt I look to the future because, that is where I will spend the rest of my life. From: Nate Duehr n...@natetech.com To: Repeater-Builder@yahoogroups.com Sent: Tue, March 16, 2010 3:20:48 AM Subject: Re: [Repeater-Builder] cor location in an ic-2200h On Mar 15, 2010, at 11:33 PM, Russell wrote: Hi, I am building a portable repeater for our ARES Club. I have 2 Icom IC-2200H 2 mtr units, a ces rm-10 controller. I am new at this building, and cannot decipher the info given by the controller instructions. It will help if you'll tell us which controller it is. It advises to use the radio cor connection and here is where I'm stumped. A COR is any logic signal inside the radio that triggers when either the squelch is open, or probably better, whenever CTCSS is detected (if you're requiring CTCSS on your repeater). Some controllers take inputs for both as separate signals and let you then turn on/off the requirement for CTCSS in the controller by choosing which logic input to trigger off of, or my preference, logically AND'ing the signals together, meaning both COR/COS and CTCSS must be active from the repeater's receiver before the repeater will repeat. This signal, as in on most Amateur grade gear, is NOT available on any of the connectors of the IC-2200H, per the manual at http://www.icomamerica.com -- pages 1-5. The only way you'll find it is with a logic probe, oscilloscope, or similar and knowledge of the radio's schematic and internal layout, and you'll have to bring it out from inside the rig. There are MUCH easier options for this, including... - Use of the commercial Icom rigs. They have appropriate programming software and connectors for interfacing them to external hardware. - Maybe consider talking to the sponsors of this mailing list... Repeater-Builder The Company (TM? GRIN...) -- they make much higher quality repeaters out of older commercial gear than can be easily cobbled together from a couple of Amateur-grade mobiles. They can also discuss duplexer options, see below for more on that. It also wants a connection at the output of the discriminater circuit. A Discriminator circuit can be found in any FM/PM radio, it's the audio prior to being de-emphasized directly off of the circuit that detects it from the RF input. Most controllers will also work with regular audio from a speaker or better, some place in the radio that gives a constant audio level. (If you use the speaker circuit, someone might walk up and turn down the volume control and mess up your carefully set levels that provide correct deviation on your repeater transmitter that matches the deviation of the FM signal being received.) Again, need to know which controller you chose for your engineering project, and why... I have been a tech over 35 years, this issue is causing my teeth to fall out, I already lost most of my hair. Ahh, don't go that far. It's just a repeater! (GRIN) I would really appreciate any help you might have. 73==Dan w2rdt BTW: I know these are not the best units to work with. Financially right now, it is all we could afford. My bigger concern is, Why 2 meters? -- getting a duplexer that can handle a standard ham radio 600 KHz RX/TX split small enough to be portable is a pain, unless you're going to run a VERY low power level. You might have to look into doing a very non-standard and much wider split. This is why most people building portable repeaters are doing it up at UHF where the standard split is 5 MHz... Also if you haven't been perusing the Antenna, Duplexer, and other areas of www.repeater- builder.com -- definitely check those out. This I want to build a portable repeater question comes up so often, I wonder if someone has time to turn it into an article for RB... -- Nate Duehr, WY0X n...@natetech. com
Re: [Repeater-Builder] cor location in an ic-2200h
Russ, what is your plan for duplexing? Those radios won't play well a few feet and 600 kHz apart. - 73, Paul AE4KR - Original Message - From: Russell Trippy To: Repeater-Builder@yahoogroups.com Sent: Tuesday, March 16, 2010 2:18 AM Subject: Re: [Repeater-Builder] cor location in an ic-2200h Thanks Nate, we are using radios at hand. we are a new club and are ARES in this county. I am building this unit just for call outs. We are using 2 mtr mainly due to not much activity on 70 ctmrs. I have built some cu copper 2mtr loops, I cannot believe the performance these little loops give out. Everything about this portable repeater is an adventure, I have hand made just about everything in this system. The cabinet has locks to keep wondering minds, dual fans, and a set of 100 amp gel cell batteries thrown in for power. Will always be with my truck, so I have power there as well. Your input is greatly appreciated.
[Repeater-Builder] Palm Beach County Ham Radio Fest
To all Radio Fest Staff, Volunteers, and Attendees: I just wanted to take a minute to thank all of you who attended the 2010 Palm Beach County Ham Radio Fest. We couldn't have asked for better weather! Everyone seemed to have a great time and the Tailgate section saw some brisk sales. Sometimes it was hard to tell if the buyers were running from table to table or being blown by the wind! J Every inside vendor I talked to did well and enjoyed themselves. The food was great, thanks to Jared, The Food Ladies, and Dominos. For those of you who keep count, we had a whopping 450 people in attendance, had 10 test takers, with most passing, and one went from no (U.S.) call to extra in one sitting! The Forums were well attended and very interesting to all. The talk in went really smoothly as the location was really easy to find. Parking needed to be a little closer, but there was enough of it for all. All in all it was a great success. I have to say that we couldn't have done this without the unwavering support of everyone involved. My hat is off to each and every one of the chair persons and the volunteers, for without them this never would have come to be. Who would have thought we could put this together in such a short time. It seems like just a few months ago we first started talking about this.oh wait, It was just a few months ago! Many thanks to all of those involved and all of those who attended, now it's time to start thinking about next year. With that in mind please go to our web site, www.PalmBeachRadioFest.com http://www.palmbeachradiofest.com/ and click on the link for the survey. We will enter your name in a drawing for a $25.00 ARRL Gift Certificate for completing it! The drawing will be on April 1, 2010, so don't wait! The survey can be done anonymously, but you have to put your call and Email in the Notes/Comments field to be entered in the drawing (otherwise you can't win!) We will use the results of this survey to make next year even better! If you want to be involved in the planning for next year's event, send me an Email and let me know what you may be interested in, or, better yet come to one of our club meetings. They are held on the third Thursday of the month at the Royal Palm Beach Fire Station at the corner of Okeechobee Blvd and Royal Palm Beach Blvd in Royal Palm Beach, talk in is 147.045. Or, go to our club's website at www.PalmsWestRadio.org http://www.palmswestradio.org/ Lastly I want to say a special thanks to my better half, Kathy KI4YFU, for putting up with my many mood swings as the event drew near! XO me J! See Y'all Next Year! Robert Pease KS4EC Chairman, 2010 Palm Beach Ham Radio Fest President, Palms West Amateur Radio Club ks...@arrl.net Marc Lonstein M.O. Unlimited Inc. P.O. Box 5364 Fort Lauderdale, FL 33310-5364 Ph: 954-720-9200 Ph: 561-368-3557 Fax: 561-368-1885 mailto:m...@mounlimited.com mailto:m...@mounlimited.com http://www.mounlimited.com/ www.mounlimited.com This e-mail transmission contains information intended only for the use of the recipient(s) named above. Further, it contains information that may be privileged and confidential. If you are not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this message (including any attachments) is strictly prohibited. If you have received this e-mail in error, please notify the sender by reply e-mail and then delete this message from your e-mail system. Thank you for your compliance.
RE: [Repeater-Builder] Maxon sm4450ne
Thanks for the reply.I felt that would be the case but I am still bushed to explain the two radios I am currently using as a repeater one on 517 and the other on 507 and their working well as far as I know .I have come across one or two of these radios that even programming them in band I carn;t get them to lock at one end of the band so they must be faulty Thank You, Ian Wells, Kerinvale Comaudio, 361 Camboon Road.Biloela.4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaudio.com.au ---Original Message--- From: Ham-Radio Date: 3/16/2010 6:38:12 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Maxon sm4450ne Ian, The SM-4450-NE is 488 to 512. If you program 517 you are out of band for that radio.. The ones I have are the NC 450-470 and two special order NB 420-450 radios. The NB are not available anymore. I know on the ones I have, when you get more than about 1 MHz out of band the PLL will unlock with error 3. I hope this helps. Charles Miller From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups com] On Behalf Of Ian Wells Sent: Monday, March 15, 2010 11:20 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Maxon sm4450ne Hi guys .I have a sm4450ne and I am having problems with setting it up for 507 and 517 mhz .I have set 2 up till now and they are working fine except these NE are having problems with the vco lock error 3 .I am wondering if anyone can shed some light .I can set it up for rx on 507 but it wont lock on transmitt. Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au
Re: [Repeater-Builder] cor location in an ic-2200h
Look around on ebay or on some of the yahoo groups. I have seen midland commercial radios for as low as $10. I sold a ton for $35 about a year ago. And most people can program them for you also. They are much easier to get signals into and out of. Save the 2200 for a mobile as standard ham gear doesn't do well in repeater service because of sensitivity, selectiviy and small heat sinks. Also as noted by nate. You really want to check out duplexors. These will cost the most and are not small unless you are going to run 1 or 2 watts. What kind of area do you need to cover. More than a few miles will require either height or power. And the more power you use, the more duplexor you will need, and you will still need some height for good recieve. Fyi we run an 16 watt vhf repeater at 120 feet in sunny flat Florida and the best price I could find on a set of duplezors that worked well was $600 for a Sinclair 6 pack. Its about as small as it gets at just over 2' tall 1, wide and 9'' deep. And it doesn't like to get moved or bumped alot. So bottom line is if you are short on cash look for duplexors first, then commercial radios. BtW we run a self contained midland 3400D vhf repeater. I have seen them around for $200 to $300 on the midland group at yahoo Anyway email me if you want morw info and happy repeating. Rob. KS4EC Sent by Good Messaging (www.good.com) -Original Message- From: Russell Trippy [mailto:w2...@yahoo.com] Sent: Tuesday, March 16, 2010 04:24 AM Eastern Standard Time To: Repeater-Builder@yahoogroups.com Subject:Re: [Repeater-Builder] cor location in an ic-2200h The controller is a CES RM-10 I look to the future because, that is where I will spend the rest of my life. From: Nate Duehr n...@natetech.com To: Repeater-Builder@yahoogroups.com Sent: Tue, March 16, 2010 3:20:48 AM Subject: Re: [Repeater-Builder] cor location in an ic-2200h On Mar 15, 2010, at 11:33 PM, Russell wrote: Hi, I am building a portable repeater for our ARES Club. I have 2 Icom IC-2200H 2 mtr units, a ces rm-10 controller. I am new at this building, and cannot decipher the info given by the controller instructions. It will help if you'll tell us which controller it is. It advises to use the radio cor connection and here is where I'm stumped. A COR is any logic signal inside the radio that triggers when either the squelch is open, or probably better, whenever CTCSS is detected (if you're requiring CTCSS on your repeater). Some controllers take inputs for both as separate signals and let you then turn on/off the requirement for CTCSS in the controller by choosing which logic input to trigger off of, or my preference, logically AND'ing the signals together, meaning both COR/COS and CTCSS must be active from the repeater's receiver before the repeater will repeat. This signal, as in on most Amateur grade gear, is NOT available on any of the connectors of the IC-2200H, per the manual at http://www.icomamerica.com -- pages 1-5. The only way you'll find it is with a logic probe, oscilloscope, or similar and knowledge of the radio's schematic and internal layout, and you'll have to bring it out from inside the rig. There are MUCH easier options for this, including... - Use of the commercial Icom rigs. They have appropriate programming software and connectors for interfacing them to external hardware. - Maybe consider talking to the sponsors of this mailing list... Repeater-Builder The Company (TM? GRIN...) -- they make much higher quality repeaters out of older commercial gear than can be easily cobbled together from a couple of Amateur-grade mobiles. They can also discuss duplexer options, see below for more on that. It also wants a connection at the output of the discriminater circuit. A Discriminator circuit can be found in any FM/PM radio, it's the audio prior to being de-emphasized directly off of the circuit that detects it from the RF input. Most controllers will also work with regular audio from a speaker or better, some place in the radio that gives a constant audio level. (If you use the speaker circuit, someone might walk up and turn down the volume control and mess up your carefully set levels that provide correct deviation on your repeater transmitter that matches the deviation of the FM signal being received.) Again, need to know which controller you chose for your engineering project, and why... I have been a tech over 35 years, this issue is causing my teeth to fall out, I already lost most of my hair. Ahh, don't go that far. It's just a repeater! (GRIN) I would really appreciate any help you might have. 73==Dan w2rdt BTW: I know these are not the best units to work with. Financially right now, it is all we could afford. My bigger concern is, Why 2 meters? -- getting a duplexer that can handle a standard ham radio 600 KHz RX/TX split small enough to be portable is
[Repeater-Builder] Vocom UHF Amplifier Tuning Question.
Hello All, I just picked up 3 of these amplifiers last night and would like to shift them down to ham. (2) UVC 100-10 (1) UVC 200-80 They are currently on 461 mhz. I haven't looked inside them yet. Is the tuning similar in design to the TPL with tuning caps to peak for the input and output swr and freq? Anyone have a owners/service manual or tuning instruction page they can scan for me and send via e-mail? Thanks, Regards, Len n2...@aol.com
[Repeater-Builder] Bird 4275 Signal Sampler
I have for sale a Bird Model 4275 Signal Sampler with adjustable coupling and with either type N or UHF connectors. This can be viewed in Birds General Catalog at: HTTP://www.bird-technologies.com/products/catalogs/1118-BTG-GenCat0010.p df Scroll down to Page 27 in the Catalog. Price - $80.00 Firm Contact me off net if interested! seaman...@sbcglobal.net Fred W5VAY
Re: [Repeater-Builder] Maxon sm4450ne
On 3/16/2010 4:37 AM, Ham-Radio wrote: Ian, The SM-4450-NE is 488 to 512. If you program 517 you are out of band for that radio.. In fact, 517 is out of band period. The top of the LMR band is 512, so if someone is asking you to program 517, they are asking you to do something illegal. Maybe it was a typo??? Since the normal repeater split up there is 3 MHz, I suspect it's either 507 and 510, or more likely 511 and 508. _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Ian Wells Sent: Monday, March 15, 2010 11:20 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Maxon sm4450ne Hi guys .I have a sm4450ne and I am having problems with setting it up for 507 and 517 mhz .I have set 2 up till now and they are working fine except these NE are having problems with the vco lock error 3 .I am wondering if anyone can shed some light .I can set it up for rx on 507 but it wont lock on transmitt. Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.auhttp://www.kerinvalecomaudio.com.au/
Re: [Repeater-Builder] Maxon sm4450ne
Hi .I in Australia and over here there are lmr frequencies over 512mhz and the split is 10meg but if the radio is uncapable of the 517mhz then I will have to replace them with a radio that can operate on those frequencies Thank You, Ian Wells, Kerinvale Comaudio, 361 Camboon Road.Biloela.4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaudio.com.au ---Original Message--- From: wd8chl Date: 03/17/10 00:07:05 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Maxon sm4450ne On 3/16/2010 4:37 AM, Ham-Radio wrote: Ian, The SM-4450-NE is 488 to 512. If you program 517 you are out of band for that radio.. In fact, 517 is out of band period. The top of the LMR band is 512, so if someone is asking you to program 517, they are asking you to do something illegal. Maybe it was a typo??? Since the normal repeater split up there is 3 MHz, I suspect it's either 507 and 510, or more likely 511 and 508. _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Ian Wells Sent: Monday, March 15, 2010 11:20 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Maxon sm4450ne Hi guys .I have a sm4450ne and I am having problems with setting it up for 507 and 517 mhz .I have set 2 up till now and they are working fine except these NE are having problems with the vco lock error 3 .I am wondering if anyone can shed some light .I can set it up for rx on 507 but it wont lock on transmitt. Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.auhttp://www.kerinvalecomaudio.com.au/
Re: [Repeater-Builder] Maxon sm4450ne
On 3/16/2010 10:16 AM, kerincom wrote: Hi .I in Australia and over here there are lmr frequencies over 512mhz and the split is 10meg but if the radio is uncapable of the 517mhz then I will have to replace them with a radio that can operate on those frequencies Oh-woops-for some reason it looked to me like you were from Coloradough...I'll go away now... Thank You, Ian Wells, Kerinvale Comaudio, 361 Camboon Road.Biloela.4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaudio.com.au
Re: [Repeater-Builder] Maxon sm4450ne
Your ok Thank You, Ian Wells, Kerinvale Comaudio, 361 Camboon Road.Biloela.4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaudio.com.au ---Original Message--- From: wd8chl Date: 3/17/2010 12:57:22 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Maxon sm4450ne On 3/16/2010 10:16 AM, kerincom wrote: Hi .I in Australia and over here there are lmr frequencies over 512mhz and the split is 10meg but if the radio is uncapable of the 517mhz then I will have to replace them with a radio that can operate on those frequencies Oh-woops-for some reason it looked to me like you were from Coloradough...I'll go away now... Thank You, Ian Wells, Kerinvale Comaudio, 361 Camboon Road.Biloela.4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaudio.com.au
[Repeater-Builder] Copper pipe rather than 2/0 copper wire
Hey All, I am thinking about lightening protection for a site and using 1/2 copper pipe runs rather than a heavy guage wire like 2/0. 1/2 copper is about $2.20 a ft, while 2/0 is about $3/foot... and 2/0's diameter is about 0.36 inches so bang for the buck 1/2 copper pipe seems the way to go. I know skin effect plays a big role in lightening since its mainly RF, what do you think about the idea? Cheers, Jesse
RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire
Copper strap is better as you get the benefit of both sides of the copper. 73 Gary K4FMX -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of Jesse Lloyd Sent: Tuesday, March 16, 2010 11:42 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Copper pipe rather than 2/0 copper wire Hey All, I am thinking about lightening protection for a site and using 1/2 copper pipe runs rather than a heavy guage wire like 2/0. 1/2 copper is about $2.20 a ft, while 2/0 is about $3/foot... and 2/0's diameter is about 0.36 inches so bang for the buck 1/2 copper pipe seems the way to go. I know skin effect plays a big role in lightening since its mainly RF, what do you think about the idea? Cheers, Jesse Yahoo! Groups Links
Re: [Repeater-Builder] Copper pipe rather than 2/0 copper wire
It will work, you just have to bond each 10' section to the next with something other than soft solder. Lightning will blow lead solder right out of a joint. Cadweld would probably be best. GL, Eric Eric Lowell Eastern Maine Electronics Inc. 48 Loon Road Wesley ME 04686 eme@starband.net www.satnetmaine.com 207-210-7469 From: Jesse Lloyd ve7...@gmail.com To: Repeater-Builder@yahoogroups.com Sent: Tue, March 16, 2010 11:41:43 AM Subject: [Repeater-Builder] Copper pipe rather than 2/0 copper wire Hey All, I am thinking about lightening protection for a site and using 1/2 copper pipe runs rather than a heavy guage wire like 2/0. 1/2 copper is about $2.20 a ft, while 2/0 is about $3/foot... and 2/0's diameter is about 0.36 inches so bang for the buck 1/2 copper pipe seems the way to go. I know skin effect plays a big role in lightening since its mainly RF, what do you think about the idea? Cheers, Jesse Y
RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire
Strap meaning solid copper, not copper or silver tinned braid. However, one might argue that the copper tubing has an equal amount of surface area and is more robust than the thin copper strap being sold.. if you fold 3 wide copper strap into a piece of tubing you get a ¾ OD tube. So, does the inside surface count? If not then the strap is the clear winner with double the surface area. What a hoot, Dave Wa3gin _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Gary Schafer Sent: Tuesday, March 16, 2010 11:59 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire Copper strap is better as you get the benefit of both sides of the copper. 73 Gary K4FMX
RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire
Softdrawn copper tubing comes in spools of 25-50-100ft. _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Eric Lowell Sent: Tuesday, March 16, 2010 12:10 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Copper pipe rather than 2/0 copper wire It will work, you just have to bond each 10' section to the next with something other than soft solder. Lightning will blow lead solder right out of a joint. Cadweld would probably be best. GL, Eric Eric Lowell Eastern Maine Electronics Inc. 48 Loon Road Wesley ME 04686 eme@starband.net www.satnetmaine.com 207-210-7469 _ From: Jesse Lloyd ve7...@gmail.com To: Repeater-Builder@yahoogroups.com Sent: Tue, March 16, 2010 11:41:43 AM Subject: [Repeater-Builder] Copper pipe rather than 2/0 copper wire Hey All, I am thinking about lightening protection for a site and using 1/2 copper pipe runs rather than a heavy guage wire like 2/0. 1/2 copper is about $2.20 a ft, while 2/0 is about $3/foot... and 2/0's diameter is about 0.36 inches so bang for the buck 1/2 copper pipe seems the way to go. I know skin effect plays a big role in lightening since its mainly RF, what do you think about the idea? Cheers, Jesse Y
Re: [Repeater-Builder] cor location in an ic-2200h
On Tue, 16 Mar 2010, Nate Duehr wrote: This I want to build a portable repeater question comes up so often, I wonder if someone has time to turn it into an article for RB... Give me a minute (I mean a month) and I'll write something on how to do it right. Oh, but it takes two suitcases... -- Kris Kirby, KE4AHR Disinformation Analyst
Re: [Repeater-Builder] cor location in an ic-2200h
On Tue, 16 Mar 2010, Paul Plack wrote: Russ, you may have to spend more on whatever you're using for power than you're saving with those radios, as they pull 1.6 amps combined even on standby receive. Also, develop a plan to keep the transmit radio's heatsink cooled, even in low power mode. But plunging ahead... Suitcase repeaters require either power efficient radios, or low-duty cycles. Otherwise you're carting out battery boxes bigger than the radio box. Your controller can work with either COS (carrier-operated switch) or derive that signal itself. If you can find COS in the Icom radio, you don't need discriminator audio, and can couple audio from anyplace handy, including the external speaker jack if it won't be accessible to passersby. You will need to lift one side of a capacitor on the controller board to use de-emphasized, non-discriminator audio. On the other hand, if you can provide the controller discriminator audio, you don't need COS - the controller will make its own. The CES docs actually seem to favor this approach. The 2200 doesn't provide the needed signals on its accessory connector, but there are leftover pins there you could use to get disciminator audio and COS out of the radio cleanly. Get the owners and service manuals, available through online search. 73, Paul, AE4KR None of this is going to work if his objective is repeating D-STAR information. -- Kris Kirby, KE4AHR Disinformation Analyst
Re: [Repeater-Builder] Copper pipe rather than 2/0 copper wire
Hi All. I used to use 3 1/8 and 1 5/8 copper transmission line in 20 ft lengths for ground systems at broadcast stations. Was very effective. Installed at a 2000ft tower which use to have a lot of damage due to lightning. We buried 40 lengths in a circle about 30 ft from the tower base. Connected them together with additional lengths of transmission line. Problem solved. Ralph, W7HSG - Original Message - From: Jesse Lloyd ve7...@gmail.com To: Repeater-Builder@yahoogroups.com Sent: Tuesday, March 16, 2010 9:41:43 AM GMT -07:00 US/Canada Mountain Subject: [Repeater-Builder] Copper pipe rather than 2/0 copper wire Hey All, I am thinking about lightening protection for a site and using 1/2 copper pipe runs rather than a heavy guage wire like 2/0. 1/2 copper is about $2.20 a ft, while 2/0 is about $3/foot... and 2/0's diameter is about 0.36 inches so bang for the buck 1/2 copper pipe seems the way to go. I know skin effect plays a big role in lightening since its mainly RF, what do you think about the idea? Cheers, Jesse
[Repeater-Builder] Super Station MasterPD-220 -3A 150.5-158.5 mHz
Hi Folks, Recently I read a note from a member of this list regarding retuning dipole elements of a commercial exposed dipole antenna, for 2m. Has anyone attempted same for subject type antenna? 73, Dave Wa3gin
Re: [Repeater-Builder] Copper pipe rather than 2/0 copper wire
It has been brought up about the issue of solidering the joints. It is better to install your ground system in a professional manner. Should something happen and you do take a strike and some one or their equipmet is injured or damaged then the cost savings are not worth the liability. Just a thought if using copper pipe was an acceptabe way of grounding at a site would you not think that the professionals would be doing it as they are always looking to save a buck. Also the copper thiefs are going to love you for making it so easy to steal and sell since they will not have to remove the insulation from the copper to get the best price. Stan Sent from my iPhone On Mar 16, 2010, at 11:18 AM, David Jordan wa3...@comcast.net wrote: Strap meaning solid copper, not copper or silver tinned braid. However, one might argue that the copper tubing has an equal amount of surface area and is more robust than the thin copper strap being sold.. if you fold 3” wide copper strap into a piece of tubing you get a ¾” OD tube. So, does the inside surface count? If not then the strap is the clear winner with double the surface area. What a hoot, Dave Wa3gin From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Gary Schafer Sent: Tuesday, March 16, 2010 11:59 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire Copper strap is better as you get the benefit of both sides of the copper. 73 Gary K4FMX
Re: [Repeater-Builder] Copper pipe rather than 2/0 copper wire
Flat copper strap has less inductance (if it is flat and straight) as far as lightning is concerned. You will need a brazing alloy like this to join the sections of pipe. http://weldingsupply.securesites.com/cgi-bin/spider.pl?D620F1||1|700| This will give you a joint similar to cad welding, the alloy is actually stronger than the copper base metal. And a torch hot enough to melt it. Air /Acytelyne /or oxy /Acytelyne. If you could figure out how to split the pipe and roll it flat you would be better off. tom / David Jordan wrote: Softdrawn copper tubing comes in spools of 25-50-100ft. *From:* Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] *On Behalf Of *Eric Lowell *Sent:* Tuesday, March 16, 2010 12:10 PM *To:* Repeater-Builder@yahoogroups.com *Subject:* Re: [Repeater-Builder] Copper pipe rather than 2/0 copper wire It will work, you just have to bond each 10' section to the next with something other than soft solder. Lightning will blow lead solder right out of a joint. Cadweld would probably be best. GL, Eric Eric Lowell Eastern Maine Electronics Inc. 48 Loon Road Wesley ME 04686 eme@starband.net www.satnetmaine.com 207-210-7469 *From:* Jesse Lloyd ve7...@gmail.com *To:* Repeater-Builder@yahoogroups.com *Sent:* Tue, March 16, 2010 11:41:43 AM *Subject:* [Repeater-Builder] Copper pipe rather than 2/0 copper wire Hey All, I am thinking about lightening protection for a site and using 1/2 copper pipe runs rather than a heavy guage wire like 2/0. 1/2 copper is about $2.20 a ft, while 2/0 is about $3/foot... and 2/0's diameter is about 0.36 inches so bang for the buck 1/2 copper pipe seems the way to go. I know skin effect plays a big role in lightening since its mainly RF, what do you think about the idea? Cheers, Jesse Y
[Repeater-Builder] building a repeater out of 2 Kenwood TK-830G's
Has anyone built a repeater out of 2 TK-830G's? I have 2 and want to build a repeater to replace one. These are high spec radios designed for use in public safety and I feel they'd make a good repeater. Any help would be greatly appreciated. Brian
Re: [Repeater-Builder] building a repeater out of 2 Kenwood TK-830G's
Hi I assume they are mobiles and as such you will have to watch the tx pa or it will cook, rx wise no problem. Dosn't matter if they were made for PS use they were, like most mobiles only intended for limited tx times.. Steve - Original Message - From: briansoehl brianso...@alliancecom.net To: Repeater-Builder@yahoogroups.com Sent: Tuesday, March 16, 2010 5:23 PM Subject: [Repeater-Builder] building a repeater out of 2 Kenwood TK-830G's Has anyone built a repeater out of 2 TK-830G's? I have 2 and want to build a repeater to replace one. These are high spec radios designed for use in public safety and I feel they'd make a good repeater. Any help would be greatly appreciated. Brian Yahoo! Groups Links
RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire
3 wide copper strap gives you 6 of surface area. ½ pipe gives you 1.57 surface area. So even 1 strap provides more surface area than ½ pipe. I think that you will find it less expensive than pipe and with the added benefit of not having to splice it every 10 feet. ¾ pipe gives you 2.355 surface area. The inside area of pipe does not count. RF will not flow on the inside of a tube/pipe. 73 Gary K4FMX _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of David Jordan Sent: Tuesday, March 16, 2010 12:18 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire Strap meaning solid copper, not copper or silver tinned braid. However, one might argue that the copper tubing has an equal amount of surface area and is more robust than the thin copper strap being sold.. if you fold 3 wide copper strap into a piece of tubing you get a ¾ OD tube. So, does the inside surface count? If not then the strap is the clear winner with double the surface area. What a hoot, Dave Wa3gin _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Gary Schafer Sent: Tuesday, March 16, 2010 11:59 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire Copper strap is better as you get the benefit of both sides of the copper. 73 Gary K4FMX
[Repeater-Builder] Fw: [rfamplifiers] Return Loss Bridge Kit
Cross posted to rb list. - Original Message - From: Don Kupferschmidt To: rfamplifi...@yahoogroups.com Sent: Tuesday, March 16, 2010 1:57 PM Subject: Re: [rfamplifiers] Return Loss Bridge Kit Jeff Skipp, There's an EBAY auction right now selling Eagle RF return loss bridges for $489.00. Here's the link: http://cgi.ebay.com/EAGLE-RLB150X3-RETURN-LOSS-BRIDGE-5MHZ-1300MHZ_W0QQitemZ380211935016QQcmdZViewItemQQptZBI_Analyzers?hash=item588665b728 You know the old saying, you get what you pay for. Just wondering how the Eagle brand stacks up against the one that Amtronix is selling. Also, are there other comparable units out there for less money? Maybe the list members will chime in with ideas. 73, Don, KD9PT - Original Message - From: skipp025 To: rfamplifi...@yahoogroups.com Sent: Tuesday, March 16, 2010 11:18 AM Subject: [rfamplifiers] Return Loss Bridge Kit Group Member Jeff posted this at another location and the info is well worth sharing here. Amtronix (a Test Equipment Repair Facility near Buffalo, NY) is offering a kit form Return Loss Bridge. http://www.amtronix.com/rlb.htm ... and you'll notice the source/reference article/web page. http://www.wetterlin.org/sam/Reflection/Bridge_BalunPlusBeads.pdf I think this is a pretty neat idea/kit. cheers, skipp
Re: [Repeater-Builder] building a repeater out of 2 Kenwood TK-830G's
Brian, I agree with Steve, but as a side note if you can run the mobiles at their lowest rated *power* and use an external PA and fans, it should be ok. Rated power for example means a 10-25W model run at 10W (since below that it might induce problems). I have two Motorola GM300 1-10W radios (M04 models) feeding an external PA and they run cool at 2W for an hour easily. Depending also on where you plan to install you will most likely need an appropriate duplexer or bandpass filters. Good luck!! Its great to build repeaters from an idea, as long as you use good engineering practices and don't be cheap on what counts. Tony Steve wrote: Hi I assume they are mobiles and as such you will have to watch the tx pa or it will cook, rx wise no problem. Dosn't matter if they were made for PS use they were, like most mobiles only intended for limited tx times.. Steve - Original Message - From: briansoehl brianso...@alliance com.net mailto:briansoehl%40alliancecom.net To: Repeater-Builder@ yahoogroups. com mailto:Repeater-Builder%40yahoogroups.com Sent: Tuesday, March 16, 2010 5:23 PM Subject: [Repeater-Builder] building a repeater out of 2 Kenwood TK-830G's Has anyone built a repeater out of 2 TK-830G's? I have 2 and want to build a repeater to replace one. These are high spec radios designed for use in public safety and I feel they'd make a good repeater. Any help would be greatly appreciated. Brian - - -- Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: repeater-builder-dig...@yahoogroups.com repeater-builder-fullfeatu...@yahoogroups.com * To unsubscribe from this group, send an email to: repeater-builder-unsubscr...@yahoogroups.com * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: building a repeater out of 2 Kenwood TK-830G's
briansoehl brianso...@... wrote: Has anyone built a repeater out of 2 TK-830G's? I have 2 and want to build a repeater to replace one. These are high spec radios designed for use in public safety and I feel they'd make a good repeater. Any help would be greatly appreciated. Brian The TK-830 is a very popular big-knob Public Safety Radio, the current replacement is a the TK-890. They make killer repeater building blocks. Aside from what you'll read from other group members I would tell you there should be no problems running the radio full power all the time. If your repeater is a lock to talk box (IE using IRLP or Echo Link) with nearly constant duty cycle it would be advisable to use a modest blower (not a fan) to move air past the transmitter deck (rf package). I would be greatly surprised if you were able to kill a TK-830 in anything but constant on (Tx) operation. The radio has self protection in the PA section. I run a number of 630/690, 730/790 and 830/890 RF Decks in full-power repeater operation and have never lost one even when they were very hot to the touch after a lot of constant key-down time. You need to pull TOS/COS/TOR/COR from the Receiver and figure out how you want to interface the transmit audio back into the transmit radio (rear panel jack or the front panel mic connector). If you want more information regarding that task... Email me direct for some ideas if you need that information. Unless you want to run lock to talk constant transmit, the 830 should work just fine. Even in high power, high duty cycle operation you'd be hard pressed to hurt an 830 RF Deck with a modest blower pushing air past the chassis. s.
[Repeater-Builder] Controller order , paypal problems
Some of you will recall that I had problems with Paypal when ordering a repeater controller. I sent two E mails to paypal and got no satisfactory reply...just stock answers I then called them to find out why they sent an E Check for my purchase instead of an instant money transfer. Again the lady read from a script and after asking her several times why they handled it this way, she finally told me that they have instituted a new security measure. When a purchase looks suspicious to their Computer, it decides to send an E Check which can take 10 - 15 days to clear. Is there any way to prevent thisno. since no human gets to see this transaction. This might happen in 1 - 2 % of the transactions that they handle. In my case the amount was $185.00 and it came out of my bank account instantly but their computer decided that it might be suspicious ! So hopefully this information is helpful to anyone using Paypal to make payments. I've used them many times in the past and never had a problem until now. John VE3AMZ
[Repeater-Builder] Re:building a repeater out of 2 Kenwood TK-830G's
Why would you want to? Surplus Kenwood TKR-820 units are readily available for $300 and less. I have seen at least 30 sold in last 3 months on eBay. These purposes built units have the power supply, interface, BEEFY heat sinks for the TX RF transistors and sometimes even the UHF duplexer ! I would keep those as mobile radios. w9gb
Re: [Repeater-Builder] Controller order , paypal problems
It's happened to me several times as a seller. They hold the instant payment as pending Wont release it until you get positive feedback or send them delivery notification. Their idea of keeping sellers in check. My response to them after several calls was why when I have 100% satisfaction and outstanding feedback. Thier answer, Standard procedure. I say in short just deal with it when you have to and also PAY PAL CAN BITE ME ! :-) --- On Tue, 3/16/10, John J. Riddell ve3...@earthlink.net wrote: From: John J. Riddell ve3...@earthlink.net Subject: [Repeater-Builder] Controller order , paypal problems To: Repeater-Builder Repeater-Builder@yahoogroups.com Date: Tuesday, March 16, 2010, 4:45 PM Some of you will recall that I had problems with Paypal when ordering a repeater controller. I sent two E mails to paypal and got no satisfactory reply...just stock answers I then called them to find out why they sent an E Check for my purchase instead of an instant money transfer. Again the lady read from a script and after asking her several times why they handled it this way, she finally told me that they have instituted a new security measure. When a purchase looks suspicious to their Computer, it decides to send an E Check which can take 10 - 15 days to clear. Is there any way to prevent thisno.. ... since no human gets to see this transaction. This might happen in 1 - 2 % of the transactions that they handle. In my case the amount was $185.00 and it came out of my bank account instantly but their computer decided that it might be suspicious ! So hopefully this information is helpful to anyone using Paypal to make payments. I've used them many times in the past and never had a problem until now. John VE3AMZ
RE: [Repeater-Builder] Re:building a repeater out of 2 Kenwood TK-830G's
I'll second Greg's observations about the TKR-820. I am using one as the primary repeater (exciter/driver) for my club's 440 machine in NE Illinois. It is a 25W station - turned down to about 7W to drive a 150W Crescend PA - and doesn't even really get warm at that power level. It's been in service for three years now without missing a beat. And yes, we are using external duplexers for this rather than the internal one. I think I have photos up on the R-B group site, in the photos section. Mark - N9WYS From: Repeater-Builder@yahoogroups.com On Behalf Of Greg Beat Why would you want to? Surplus Kenwood TKR-820 units are readily available for $300 and less. I have seen at least 30 sold in last 3 months on eBay. These purposes built units have the power supply, interface, BEEFY heat sinks for the TX RF transistors and sometimes even the UHF duplexer ! I would keep those as mobile radios. w9gb
Re: [Repeater-Builder] Controller order , paypal problems
From whom did you order the controller?? On 16/03/2010 20:45:17, John J. Riddell (ve3...@earthlink.net) wrote: Some of you will recall that I had problems with Paypal when ordering a repeater controller. I sent two E mails to paypal and got no satisfactory reply...just stock answers I then called them to find out why they sent an E Check for my purchase instead of an instant money transfer. Again the lady read from a script and after asking her several times why they handled it this way, she finally told me that they have instituted a new security measure. When a purchase looks suspicious to their Computer, it decides to send an E Check which can take 10 - 15 days to clear. Is there any way to prevent thisno. since no human gets to see this transaction. This might happen in 1 - 2 % of the transactions that they handle. In my case the amount was $185.00 and it came out of my bank account instantly but their computer decided that it might be suspicious ! So hopefully this information is helpful to anyone using Paypal to make payments. I've used them many times in the past and never had a problem until now. John VE3AMZ %0
Re: [Repeater-Builder] Controller order , paypal problems
oops, forgot to mention another small detail. ebay actually owns paypal. Interesting ? Nice way for them to also collect interest on your money while they hold it on top of listing fees getting higher all the time. --- On Tue, 3/16/10, John J. Riddell ve3...@earthlink.net wrote: From: John J. Riddell ve3...@earthlink.net Subject: [Repeater-Builder] Controller order , paypal problems To: Repeater-Builder Repeater-Builder@yahoogroups.com Date: Tuesday, March 16, 2010, 4:45 PM Some of you will recall that I had problems with Paypal when ordering a repeater controller. I sent two E mails to paypal and got no satisfactory reply...just stock answers I then called them to find out why they sent an E Check for my purchase instead of an instant money transfer. Again the lady read from a script and after asking her several times why they handled it this way, she finally told me that they have instituted a new security measure. When a purchase looks suspicious to their Computer, it decides to send an E Check which can take 10 - 15 days to clear. Is there any way to prevent thisno.. ... since no human gets to see this transaction. This might happen in 1 - 2 % of the transactions that they handle. In my case the amount was $185.00 and it came out of my bank account instantly but their computer decided that it might be suspicious ! So hopefully this information is helpful to anyone using Paypal to make payments. I've used them many times in the past and never had a problem until now. John VE3AMZ
Re: [Repeater-Builder] Re: building a repeater out of 2 Kenwood TK-830G's
On 3/16/2010 4:38 PM, skipp025 wrote: briansoehlbrianso...@... wrote: Has anyone built a repeater out of 2 TK-830G's? I have 2 and want to build a repeater to replace one. These are high spec radios designed for use in public safety and I feel they'd make a good repeater. Any help would be greatly appreciated. Brian The TK-830 is a very popular big-knob Public Safety Radio, the current replacement is a the TK-890. They make killer repeater building blocks. Aside from what you'll read from other group members I would tell you there should be no problems running the radio full power all the time. If your repeater is a lock to talk box (IE using IRLP or Echo Link) with nearly constant duty cycle it would be advisable to use a modest blower (not a fan) to move air past the transmitter deck (rf package). I absolutely would NOT run a x30 at 100W out continuous! Even with air on it. The high power unit should not be run more then abt 30-40 W, and the low power unit should not be run at more than 20-25 for repeater use...
Re: [Repeater-Builder] Controller order , paypal problems
I'll chime in, Paypal inadvertently sent a transaction twice withen 4 seconds of each other. After holding for 30 minutes the asian lady on the phone said there was nothing she could do as the transaction already went through and I'd have to contact the seller and ask to refund one of the transactions, which is funny as both were for the same amount and no I did not hit the send button twice.
[Repeater-Builder] Re: building a repeater out of 2 Kenwood TK-830G's
First of all Thanks Tony and Steve. The radios are rated at 35W adjustable to
5W I plan to run them at about 20W, and they aren't going to exceed about 30
to 40% duty cycle. So the PAs should be fine.
AS far as a duplexer, it's already installed and tuned in the repeater I'm
replacing.
I guess what I'm looking for is any method of connecting the receiver to the
transmitter. The detect signal output (RX acc plug pin 4) is at 400mV/47Kohms,
and the Mic input on the transmitter is 5mV/3KHz dev. 600ohm (TX acc plug pin
5). And also is there a way to get an active low out of the receiver when the
programmed freq and tone pair is decoded (to use as PTT on the TX). Hopefully
a simple, durable and effective method has been done already. That way I don't
have to reinvent the wheel.
Otherwise I may have to use an external repeater control panel, like a Zetron.
Brian
--- In Repeater-Builder@yahoogroups.com, KT9AC kt...@... wrote:
Brian,
I agree with Steve, but as a side note if you can run the mobiles at
their lowest rated *power* and use an external PA and fans, it should be
ok. Rated power for example means a 10-25W model run at 10W (since below
that it might induce problems). I have two Motorola GM300 1-10W radios
(M04 models) feeding an external PA and they run cool at 2W for an hour
easily.
Depending also on where you plan to install you will most likely need an
appropriate duplexer or bandpass filters.
Good luck!! Its great to build repeaters from an idea, as long as you
use good engineering practices and don't be cheap on what counts.
Tony
Steve wrote:
Hi
I assume they are mobiles and as such you will have to watch
the tx pa or it will cook, rx wise no problem.
Dosn't matter if they were made for PS use they were, like
most mobiles only intended for limited tx times..
Steve
- Original Message -
From: briansoehl brianso...@alliance com.net
mailto:briansoehl%40alliancecom.net
To: Repeater-Builder@ yahoogroups. com
mailto:Repeater-Builder%40yahoogroups.com
Sent: Tuesday, March 16, 2010 5:23 PM
Subject: [Repeater-Builder] building a repeater out of 2 Kenwood TK-830G's
Has anyone built a repeater out of 2 TK-830G's? I have 2 and want to
build a repeater to replace one. These are high spec radios designed
for use in public safety and I feel they'd make a good repeater.
Any help would be greatly appreciated.
Brian
- - --
Yahoo! Groups Links
[Repeater-Builder] Re:building a repeater out of 2 Kenwood TK-830G's
Greg Beat gregory.b...@... wrote: Why would you want to? Surplus Kenwood TKR-820 units are readily available for $300 and less. I have seen at least 30 sold in last 3 months on eBay. These purposes built units have the power supply, interface, BEEFY heat sinks for the TX RF transistors and sometimes even the UHF duplexer ! I would keep those as mobile radios. w9gb Straight forward questions... straight forward answers. Because the TKR-820 has less power output. I also don't want to pay to heat a bunch of individual linear power supplies and much of what I do is off grid. And the antenna is a combiner system. s.
[Repeater-Builder] Re: building a repeater out of 2 Kenwood TK-830G's
I absolutely would NOT run a x30 at 100W out continuous! Even with air on it. Well, to each his own. I wasn't the first one to use mobile RF Decks in repeater operation. The high power unit should not be run more then abt 30-40 W, and the low power unit should not be run at more than 20-25 for repeater use... I'll let you know if and when any of the units I use pretty much each day fail... so far so good after many years of regular daily high power operation. s.
[Repeater-Builder] Re: building a repeater out of 2 Kenwood TK-830G's
briansoehl brianso...@... wrote: First of all Thanks Tony and Steve. The radios are rated at 35W adjustable to 5W I plan to run them at about 20W, and they aren't going to exceed about 30 to 40% duty cycle. So the PAs should be fine. They'd easily be fine at 35 watts, especially at that duty cycle but by all means use what you feel comfortable with. AS far as a duplexer, it's already installed and tuned in the repeater I'm replacing. I guess what I'm looking for is any method of connecting the receiver to the transmitter. The detect signal output (RX acc plug pin 4) is at 400mV/47Kohms, and the Mic input on the transmitter is 5mV/3KHz dev. 600ohm (TX acc plug pin 5). And also is there a way to get an active low out of the receiver when the programmed freq and tone pair is decoded (to use as PTT on the TX). Hopefully a simple, durable and effective method has been done already. That way I don't have to reinvent the wheel. You'd do well to have an external controller but it's not required. You could email me direct and I'll provide you with some additional connection information. Otherwise I may have to use an external repeater control panel, like a Zetron. Brian Doesn't have to bet that expensive and complicated... s. --- In Repeater-Builder@yahoogroups.com, KT9AC kt9ac@ wrote: Brian, I agree with Steve, but as a side note if you can run the mobiles at their lowest rated *power* and use an external PA and fans, it should be ok. Rated power for example means a 10-25W model run at 10W (since below that it might induce problems). I have two Motorola GM300 1-10W radios (M04 models) feeding an external PA and they run cool at 2W for an hour easily. Depending also on where you plan to install you will most likely need an appropriate duplexer or bandpass filters. Good luck!! Its great to build repeaters from an idea, as long as you use good engineering practices and don't be cheap on what counts. Tony Steve wrote: Hi I assume they are mobiles and as such you will have to watch the tx pa or it will cook, rx wise no problem. Dosn't matter if they were made for PS use they were, like most mobiles only intended for limited tx times.. Steve - Original Message - From: briansoehl brianso...@alliance com.net mailto:briansoehl%40alliancecom.net To: Repeater-Builder@ yahoogroups. com mailto:Repeater-Builder%40yahoogroups.com Sent: Tuesday, March 16, 2010 5:23 PM Subject: [Repeater-Builder] building a repeater out of 2 Kenwood TK-830G's Has anyone built a repeater out of 2 TK-830G's? I have 2 and want to build a repeater to replace one. These are high spec radios designed for use in public safety and I feel they'd make a good repeater. Any help would be greatly appreciated. Brian - - -- Yahoo! Groups Links
[Repeater-Builder] E.F. JOHNSON radio
I have a vhf radio presently on 162mhz made by E.F Johnson. It is a small unit, but I can't find a combo. It has a FCC ID ATH90F2427152. The number is very faded and hard to read. Can anyone tell me anything about these. Are the useful for hams and how can they be programmed. Thanks Doug VE5DA
Re: [Repeater-Builder] E.F. JOHNSON radio
EF Johnson Challenger 7152A? VHF 55W http://www.repeater-builder.com/johnson/efj-index.html http://www.ccdx.org/zedyx/mods/challenger.htm On Tue, Mar 16, 2010 at 3:43 PM, Doug ap...@sasktel.net wrote: I have a vhf radio presently on 162mhz made by E.F Johnson. It is a small unit, but I can't find a combo. It has a FCC ID ATH90F2427152. The number is very faded and hard to read. Can anyone tell me anything about these. Are the useful for hams and how can they be programmed. Thanks Doug VE5DA Yahoo! Groups Links
Re: [Repeater-Builder] Controller order , paypal problems
On Tue, 16 Mar 2010, John J. Riddell wrote: Some of you will recall that I had problems with Paypal when ordering a repeater controller. I sent two E mails to paypal and got no satisfactory reply...just stock answers I then called them to find out why they sent an E Check for my purchase instead of an instant money transfer. Again the lady read from a script and after asking her several times why they handled it this way, she finally told me that they have instituted a new security measure. When a purchase looks suspicious to their Computer, it decides to send an E Check which can take 10 - 15 days to clear. Is there any way to prevent thisno. since no human gets to see this transaction. This might happen in 1 - 2 % of the transactions that they handle. In my case the amount was $185.00 and it came out of my bank account instantly but their computer decided that it might be suspicious ! So hopefully this information is helpful to anyone using Paypal to make payments. I've used them many times in the past and never had a problem until now. John VE3AMZ It's because terrorists are Canadian. -- Kris Kirby, KE4AHR Disinformation Analyst
RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire
Jesse, Not a good idea. Both NFPA 70 (the National Electrical Code) and NFPA 780 (the Lightning Protection Code) have strict requirements for wire sizes and connection methods. Neither grounding systems nor lightning protection systems may use a soldered connection in the circuit. Perhaps your best course of action is to understand the Code requirements, and construct your system accordingly. Keep in mind the fact that your insurance underwriter may deny any and all claims for damages due to lightning, if your system was constructed in a manner inconsistent with the applicable codes. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Jesse Lloyd Sent: Tuesday, March 16, 2010 8:42 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Copper pipe rather than 2/0 copper wire Hey All, I am thinking about lightening protection for a site and using 1/2 copper pipe runs rather than a heavy guage wire like 2/0. 1/2 copper is about $2.20 a ft, while 2/0 is about $3/foot... and 2/0's diameter is about 0.36 inches so bang for the buck 1/2 copper pipe seems the way to go. I know skin effect plays a big role in lightening since its mainly RF, what do you think about the idea? Cheers, Jesse
Re: [Repeater-Builder] E.F. JOHNSON radio
At 06:03 PM 16/03/2010, you wrote: EF Johnson Challenger 7152A? VHF 55W http://www.repeater-builder.com/johnson/efj-index.html http://www.ccdx.org/zedyx/mods/challenger.htm On Tue, Mar 16, 2010 at 3:43 PM, Doug ap...@sasktel.net wrote: I have a vhf radio presently on 162mhz made by E.F Johnson. It is a small unit, but I can't find a combo. It has a FCC ID ATH90F2427152. The number is very faded and hard to read. Can anyone tell me anything about these. Are the useful for hams and how can they be programmed. --- I think you are right on.. I googled 7152 and found a chap who was doing the uhf version. The radios look exactly the same. So I guess most of the pin outs and mic connections will be also. Now I have to find a schematic and a little info on how do you program them... Thanks very much.. 73 Doug
Re: [Repeater-Builder] Controller order , paypal problems
It's because terrorists are Canadian. -- Kris Kirby, KE4AHR Disinformation Analyst Now thats just not funny __,_._,__
Re: [Repeater-Builder] E.F. JOHNSON radio
Looks like a 7152 -PC Programmable w/ proper software. Ed Com/Rad Inc - Original Message - From: Doug To: Repeater-Builder@yahoogroups.com Sent: Tuesday, March 16, 2010 5:43 PM Subject: [Repeater-Builder] E.F. JOHNSON radio I have a vhf radio presently on 162mhz made by E.F Johnson. It is a small unit, but I can't find a combo. It has a FCC ID ATH90F2427152. The number is very faded and hard to read. Can anyone tell me anything about these. Are the useful for hams and how can they be programmed. Thanks Doug VE5DA
[Repeater-Builder] Repeater /Crossband Help
Hello hope Everyone is doing well, I have ran into a little Problem and thought I would get some suggestions on how to resolve it I have a Motorola Micor 224.40 repeater built By Scott N3XCC , here on the Repeater builder group; it has worked great for over 3 Yrs. I have a Few Hams in the area who do not have 220 but the know and would like to talk to some of their friends who do , So I took My Kenwood TM-631 Duel band found a Local 2 Meter Simplex that Myself and a few others have been using for over 20 Yrs . I turned the 220 Transmit down as low as I could get it which is 2 Watts That goes into a Bird 100Watt Dummy load . The 2 Meter side I have set a 10 watts and a 3 In muffing Fan that runs while Transmitting It runs nice and Cool , Everyone likes it and it works fine Except that is has been keying up on the 2 Meter side off and on sometimes as long as 3 4 Min Unfortunately I had disabled the TOT And on this Radio you can only have a PL On one side and I need that on the 220 side . What I think is going on is that the Micor 220 has a Very small signal on the output always being transmitted. No big deal except for what I am trying to do and that will random bring up the 2 Meter Transmit. This radio has the 6 In Pigtails coming out to a SO-239 I wrapped them with Foil and Moved the Duel band radio about 10 ft away from the Repeater which is in a 4 ft Motorola case . The link is being Id When the Repeater is being used. Any thoughts will be great appreciated, The hams using this really like it that don't have 220 they can now use their 2 Meter Mobile and Ht . Thanks Don KA9QJG
Re: [Repeater-Builder] cor location in an ic-2200h
I notice you are getting everything but the answer to your question. Please look at this video and then give Joe an email. If he dosn't have the answer he probably can get it. Joes email is kc2...@yahoo.com Dave N2KTO On 3/16/2010 1:33 AM, Russell wrote: Hi, I am building a portable repeater for our ARES Club. I have 2 Icom IC-2200H 2 mtr units, a ces rm-10 controller. I am new at this building, and cannot decipher the info given by the controller instructions. It advises to use the radio cor connection and here is where I'm stumped. It also wants a connection at the output of the discriminater circuit. I have been a tech over 35 years, this issue is causing my teeth to fall out, I already lost most of my hair. I would really appreciate any help you might have. 73==Dan w2rdt BTW: I know these are not the best units to work with. Financially right now, it is all we could afford.
Re: [Repeater-Builder] Repeater /Crossband Help
Sounds like your channel element is running all the time You may need to force jumper your ptt to ground all the time and reconect your controllers ptt to the channel element select line so it only runs when it needs to. Other than that about the only thing you could do is place an attenuator in line with your remote base receiver. I am sure Scott can tell you how to do it the right way. tom ka9qjg1 wrote: Hello hope Everyone is doing well, I have ran into a little Problem and thought I would get some suggestions on how to resolve it I have a Motorola Micor 224.40 repeater built By Scott N3XCC , here on the Repeater builder group; it has worked great for over 3 Yrs. I have a Few Hams in the area who do not have 220 but the know and would like to talk to some of their friends who do , So I took My Kenwood TM-631 Duel band found a Local 2 Meter Simplex that Myself and a few others have been using for over 20 Yrs . I turned the 220 Transmit down as low as I could get it which is 2 Watts That goes into a Bird 100Watt Dummy load . The 2 Meter side I have set a 10 watts and a 3 In muffing Fan that runs while Transmitting It runs nice and Cool , Everyone likes it and it works fine Except that is has been keying up on the 2 Meter side off and on sometimes as long as 3 4 Min Unfortunately I had disabled the TOT And on this Radio you can only have a PL On one side and I need that on the 220 side . What I think is going on is that the Micor 220 has a Very small signal on the output always being transmitted. No big deal except for what I am trying to do and that will random bring up the 2 Meter Transmit. This radio has the 6 In Pigtails coming out to a SO-239 I wrapped them with Foil and Moved the Duel band radio about 10 ft away from the Repeater which is in a 4 ft Motorola case . The link is being Id When the Repeater is being used. Any thoughts will be great appreciated, The hams using this really like it that don't have 220 they can now use their 2 Meter Mobile and Ht . Thanks Don KA9QJG Yahoo! Groups Links
[Repeater-Builder] Re: Repeater /Crossband Help
Don, I will let Scott or Kevin confirm this but I think you are correct in that often times the transmit channel element is strapped to oscillate all of the time. Nothing wrong in doing this and it is not normally a problem unless you are very close to the repeater (usually within a few feet). If you reach inside the Micor cabinet and pull out the transmit channel element the source of keying your cross band radio should go away. The quick fix is more distance (try another 10 feet) or add more shielding between the repeater and your cross band mobile if possible. Joe - WA7JAW --- In Repeater-Builder@yahoogroups.com, ka9qjg1 ka9...@... wrote: Hello hope Everyone is doing well, I have ran into a little Problem and thought I would get some suggestions on how to resolve it I have a Motorola Micor 224.40 repeater built By Scott N3XCC , here on the Repeater builder group; it has worked great for over 3 Yrs. I have a Few Hams in the area who do not have 220 but the know and would like to talk to some of their friends who do , So I took My Kenwood TM-631 Duel band found a Local 2 Meter Simplex that Myself and a few others have been using for over 20 Yrs . I turned the 220 Transmit down as low as I could get it which is 2 Watts That goes into a Bird 100Watt Dummy load . The 2 Meter side I have set a 10 watts and a 3 In muffing Fan that runs while Transmitting It runs nice and Cool , Everyone likes it and it works fine Except that is has been keying up on the 2 Meter side off and on sometimes as long as 3 4 Min Unfortunately I had disabled the TOT And on this Radio you can only have a PL On one side and I need that on the 220 side . What I think is going on is that the Micor 220 has a Very small signal on the output always being transmitted. No big deal except for what I am trying to do and that will random bring up the 2 Meter Transmit. This radio has the 6 In Pigtails coming out to a SO-239 I wrapped them with Foil and Moved the Duel band radio about 10 ft away from the Repeater which is in a 4 ft Motorola case . The link is being Id When the Repeater is being used. Any thoughts will be great appreciated, The hams using this really like it that don't have 220 they can now use their 2 Meter Mobile and Ht . Thanks Don KA9QJG
[Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire
http://groups.yahoo.com/group/Repeater-Builder/message/98899;_ylc=X3oDMTJxM XBnc3YwBF9TAzk3MzU5NzE1BGdycElkAzEwNDE2OARncnBzcElkAzE3MDUwNjMxMDgEbXNnSWQDO Tg4OTkEc2VjA2Rtc2cEc2xrA3Ztc2cEc3RpbWUDMTI2ODgwMDcyMw-- Re: Copper pipe rather than 2/0 copper wire Posted by: Eric Lemmon mailto:wb6...@verizon.net?subject=%20re%3a%20copper%20pipe%20rather%20than% 202%2F0%20copper%20wire wb6...@verizon.net http://profiles.yahoo.com/wb6fly wb6fly Tue Mar 16, 2010 5:55 pm (PDT) Jesse, Not a good idea. Both NFPA 70 (the National Electrical Code) and NFPA 780 (the Lightning Protection Code) have strict requirements for wire sizes and connection methods. Neither grounding systems nor lightning protection systems may use a soldered connection in the circuit. Perhaps your best course of action is to understand the Code requirements, and construct your system accordingly. Keep in mind the fact that your insurance underwriter may deny any and all claims for damages due to lightning, if your system was constructed in a manner inconsistent with the applicable codes. 73, Eric Lemmon WB6FLY You dont need any solder joints with type K or L soft copper. The material comes is 60 or 100 foot rolls and you just flatten the ends and drill holes for mounting bolts and star washers. ½ inch soft copper is actually 5/8 inch OD and makes a great conductor. The material comes in size up to 2 inch but that gets pretty expensive. This pipe is designed to be buried in the ground so you can be assured it will stand up just fine outdoors. One caution is to anchor it down, swinging in the wind will cause it to break due to repeated flexing. All the normal bend radius for electrical conductors should be observed as lightning does not like to make sharp corners. Jack K6YC
RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire
I had to clean up a site after someone used ¾ copper pipe for the halo. Standard sweat solder connections. Shrapnel everywhere. So what is the electrical properties of ¾ copper pipe after lightning has pierced through it??? J Jeff From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Gary Schafer Sent: Tuesday, March 16, 2010 11:41 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire 3 wide copper strap gives you 6 of surface area. ½ pipe gives you 1.57 surface area. So even 1 strap provides more surface area than ½ pipe. I think that you will find it less expensive than pipe and with the added benefit of not having to splice it every 10 feet. ¾ pipe gives you 2.355 surface area. The inside area of pipe does not count. RF will not flow on the inside of a tube/pipe. 73 Gary K4FMX _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of David Jordan Sent: Tuesday, March 16, 2010 12:18 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire Strap meaning solid copper, not copper or silver tinned braid. However, one might argue that the copper tubing has an equal amount of surface area and is more robust than the thin copper strap being sold.. if you fold 3 wide copper strap into a piece of tubing you get a ¾ OD tube. So, does the inside surface count? If not then the strap is the clear winner with double the surface area. What a hoot, Dave Wa3gin _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Gary Schafer Sent: Tuesday, March 16, 2010 11:59 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire Copper strap is better as you get the benefit of both sides of the copper. 73 Gary K4FMX
[Repeater-Builder] Controller order PayPal problems
I have been burned by PayPal several times. The real reason they put the hold on your checks or hold money owed to you has nothing to do with your ratings and little to do with security. Basically, they control billions of dollars in transactions ever month through EBay. By holding the money even a few days (typically 2 to 4 weeks), PayPal makes millions in free interest on your money (your interest, actually). There is little regulation in the industry and since EBay owns PayPal, they can pretty much do as they please with your money and you can just lump it. I'm a capitalist and I hate unnecessary government regulation and any form of socialism. However, I don't see any change soon as these guys are cozy with legislators. Remember, next election, use the NRA method of voting.Never Re-elect Anyone! 73, Don K9NR E-mail message checked by Spyware Doctor (7.0.0.514) Database version: 6.14570 http://www.pctools.com/en/spyware-doctor-antivirus/
