[Repeater-Builder] Cushman CE-6030 help needed
Hi, I've got a Cushman CE-6030 spectrum analyzer that lost the memory battery. Now that I've replaced it, the PLL is locking up on random garbage. Do any of you have one, or access to a shop manual? I think I need to do a processor reset, but can't figure out how to do it. I've called everywhere, but most no one services this model any more. Any help is greatly appreciated. Sincerely, Dave; wb4iuy @ teara . org
[Repeater-Builder] Radio coverage prediction software
Has anyone ever used this website for predicting repeater coverage? I'm not sure what the dBuV/m values for the coverage display should be. Any suggestions? Thanks, Jim
[Repeater-Builder] oops forgot to attach the website
http://lrcov.crc.ca/cov.php?lang=en
[Repeater-Builder] fare thee well, AMPS
http://www.infoworld.com/article/08/02/14/Most-analog-cellular-to-fade-away-on-Monday_1.html Raise a toast to the only cellular phone network that didn't sound like crap, this weekend. :-) -- Nate Duehr [EMAIL PROTECTED]
Re: [Repeater-Builder] IFR FM/AM 1200S
There are a few differences: That source on the web is probably KG Electronics in Wichita, KS (I talked to him this week). There is a small amplifier and piece of coax missing also -- the amp isn't required, if it is omitted, then track low and track medium are available, but not track high. The coax is no biggie, but the problem is the software. Copying the EPROM would be considered a copyright violation and it doesn't appear that anyone really wants to go there since Aeroflex apparently isn't happy about this practice. I checked prices with Aeroflex yesterday -- $800 for Option 12, $200 for labor to install, and $250 for a mandatory calibration. I'm just a ham doing this for fun. It is a shame I can't just get the EPROM and roll with it, but apparently, those are the breaks. Thanks to those who have responded -- I realize this thread is a bit off topic. 73 DE N0MJS On Feb 15, 2008, at 10:19 PM, Ralph Hogan wrote: Cort, Somewhere on the web I read that the difference between the non- tracking versus the tracking 1200S was just a firmware change. The hardware is already there. Someone else may comment on this that knows more, but if that is the case, you just need a copy of the eproms in the full up option-12 1200. A friend has the same non-tracking 1200. It would be interesting to add the tracking to his setup if it were that easy. Ralph W4XE -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Cort Buffington Sent: Friday, February 15, 2008 8:01 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] IFR FM/AM 1200S Folks, I realize this is an insane long shot. I'm not a Ham Radio guy, not a commercial shop. I've finally gotten an IFR FM/AM 1200S. It didn't have option 12 (Tracking Generator). I'm looking for parts from junked 1200s to add option 12. IFR/Aeroflex wants WAY more than I can afford for this. If anyone has junked or spare 1200S option 12 parts for sale or trade, I'd love to talk to you. 73 DE N0MJS -- Cort Buffington H: +1-785-838-3034 M: +1-785-865-7206 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: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] * 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: Spectra programming problem
D37KGA5JB5FK Sorry for the long delay on replying - was in the hospital... Mark - N9WYS n9wys (at) ameritech (dot) net -Original Message- From: Repeater-Builder@yahoogroups.com On Behalf Of sgreact47 Sent: Sunday, February 10, 2008 4:23 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Spectra programming problem n9wys [EMAIL PROTECTED] wrote: I'm having trouble with programming yet another Spectra. Mark, What is the model number on your Spectra? I may be able to help. Yahoo! Groups Links
[Repeater-Builder] Remote control systems
Where they are used, what is a typical example of a remote control system for a repeater? In other words, to provide the ability to shutdown the repeater remotely, by means other than the input. I think this has been touched on briefly in the past here but I was unable to find anything in the archives. Specifically, what about the receiver antenna connection? We have access to only one feedline connection. If the control receiver is in the same band as the repeater (VHF in this case) could a divider be used off of the duplexer RX port to connect to the remote control RX? Would a cavity be needed also? As for the rest of the system, my inclination would be to use a DTMF decoder output to control the PTT line. Any input is appreciated. 73 Paul - KC0HST
Re: [Repeater-Builder] Radio coverage prediction software
jimmyrtle wrote: Has anyone ever used this website for predicting repeater coverage? I'm not sure what the dBuV/m values for the coverage display should be. Any suggestions? Thanks, Jim Just tried it Jim and it tracks very well with the coverage I get from several sites. Thanks for posting the info. Dexter, W4DEX
Re: [Repeater-Builder] Remote control systems
On Sat, 16 Feb 2008, [iso-8859-1] Paul - KCØHST wrote: Specifically, what about the receiver antenna connection? We have access to only one feedline connection. If the control receiver is in the same band as the repeater (VHF in this case) could a divider be used off of the duplexer RX port to connect to the remote control RX? Would a cavity be needed also? You can use a wire-line tone remote if you're fortunate enough to have a copper loop up to the repeater site from a control site. You can also build a -3dB Wilkenson splitter and feed both recievers from the RX duplexer output. -- Kris Kirby, KE4AHR [EMAIL PROTECTED] But remember, with no superpowers comes no responsibility. --rly
[Repeater-Builder] Re: Remote control systems
You can use a wire-line tone remote if you're fortunate enough to have a copper loop up to the repeater site from a control site. If I could clarify that statement, wireline in this case can mean a dialup phone line, internet connection, etc., even if brought to the site via wi-fi. Point is, it doesn't have to be a copper loop to be defined as a wireline. You can also build a -3dB Wilkenson splitter and feed both recievers from the RX duplexer output. Yup that will work. (I'm using TV-type splitters with good results-horrors!). Especially if you are using a preamp. Split at the output of it to both receivers. You will need to take into account the loss of the duplexer rx side at the aux frequency... Laryn K8TVZ -- Kris Kirby, KE4AHR [EMAIL PROTECTED] But remember, with no superpowers comes no responsibility. --rly
Re: [Repeater-Builder] Cushman CE-6030 help needed
Dave Get in touch with Cardinal Electronics in Chicago. They used to be a Cushman service center. Ralph - Original Message - From: Tweekmailto:[EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.commailto:Repeater-Builder@yahoogroups.com Sent: Saturday, February 16, 2008 12:09 AM Subject: [Repeater-Builder] Cushman CE-6030 help needed Hi, I've got a Cushman CE-6030 spectrum analyzer that lost the memory battery. Now that I've replaced it, the PLL is locking up on random garbage. Do any of you have one, or access to a shop manual? I think I need to do a processor reset, but can't figure out how to do it. I've called everywhere, but most no one services this model any more. Any help is greatly appreciated. Sincerely, Dave; wb4iuy @ teara . org
Re: [Repeater-Builder] Re: Remote control systems
On Sat, 16 Feb 2008, Laryn Lohman wrote: KK You can use a wire-line tone remote if you're fortunate enough to KK have a copper loop up to the repeater site from a control site. If I could clarify that statement, wireline in this case can mean a dialup phone line, internet connection, etc., even if brought to the site via wi-fi. Point is, it doesn't have to be a copper loop to be defined as a wireline. It's possible, but the method I'm suggesting doesn't cope well over RF without some serious hacking: http://www.telex.com/UserFiles/Downloads/radiodispatch/223C_Manual.pdf I would shy away from using WiFi for control, however. It is half-duplex and may have quite a bit of packet loss. I would strongly recommend using a 222MHz or 430-440MHz reciever for a control link. KK You can also build a -3dB Wilkenson splitter and feed both recievers KK from the RX duplexer output. Yup that will work. (I'm using TV-type splitters with good results-horrors!). Especially if you are using a preamp. Split at the output of it to both receivers. You will need to take into account the loss of the duplexer rx side at the aux frequency... You're going to see about -3.8dB of loss using a standard splitter, regardless of type. You may see more loss using a broadband 75-ohm splitter, however you can compensate the loss out of the system by re-engineering the splitter (should you choose to build one) or simply by retuning the duplexers with a 75-ohm load on the RX port, or using a 50-ohm to 75-ohm transformer (which can be made out of a coax section). The real crux of this is that you have to be certain that your receievers really are matched at 50-ohms. Sometimes they don't present a 50-ohm load. It would also be an exceptionally good idea to look at the recieve antenna port through a spectrum analyzer to be certain that you don't have any strong nearby carriers that would cause a preamp after the duplexer to go into compression or limiting. Your users aren't going to notice the difference unless there's at least -6dB of difference between before and after, so the change only affects fringe area users, and possibly HT users. I would skip the preamp. -- Kris Kirby, KE4AHR [EMAIL PROTECTED] But remember, with no superpowers comes no responsibility. --rly
Re: [Repeater-Builder] Remote control systems
Paul, I've seen the other responses about the Wilkinson divider, but you could also use a UHF receiver with a band-splitter on the antenna side of the duplexer, which could be implemented with as little as a few tenths of a dB loss. You didn't say which VHF band you're on, but a 2M antenna should provide reasonable operation on 430-450 MHz for a control receiver, although the radiation pattern won't be as clean as it might be on 2M. Even gain antennas usually work reasonably well at odd multiples of their design frequencies, although if you've skimped on coax, loss could be an issue at 430 MHz and above. As for the actual mechanism at the repeater site, I'd recommend using one of the integrated controllers with separate inputs for main and control receivers. Having a separate box with a separate DTMF controller just to defeat the repeater's PTT line creates more failure modes. Also, the integrated controllers will allow modes in which you can kill just the path between the main receiver and the transmitter, and leave the transmitter functional for acknowledgement messages, which can sometimes help a great deal with troubleshooting. 73, Paul, AE4KR - Original Message - From: Paul - KCØHST To: Repeater-Builder@yahoogroups.com Sent: Saturday, February 16, 2008 9:18 AM Subject: [Repeater-Builder] Remote control systems Where they are used, what is a typical example of a remote control system for a repeater? In other words, to provide the ability to shutdown the repeater remotely, by means other than the input. I think this has been touched on briefly in the past here but I was unable to find anything in the archives. Specifically, what about the receiver antenna connection? We have access to only one feedline connection. If the control receiver is in the same band as the repeater (VHF in this case) could a divider be used off of the duplexer RX port to connect to the remote control RX? Would a cavity be needed also? As for the rest of the system, my inclination would be to use a DTMF decoder output to control the PTT line. Any input is appreciated. 73 Paul - KC0HST
[Repeater-Builder] WTB - UHF GM300's, GR300's, GR500's
WTB - UHF Motorola GM300's. 16 channel only, 438-470 MHz, any power level. Will also consider GR300 and/or GR500 UHF repeater. Send e-mail off list, please. Thanks.
[Repeater-Builder] RLC-3 Controller FS
Interested in a Link Comm RLC-3? On ebay Item number: 260210882385
[Repeater-Builder] Re: linking frequencies?
--- In Repeater-Builder@yahoogroups.com, let_cyber [EMAIL PROTECTED] wrote: Is 900 Mhz still useable for repeater linking, or is it so full of garbage that there would be problems? How about 440 Mhz? Thanks, Al KB2AYU Returning to the question posed a year ago. All the replies were about linking on 420-440. I guess avoiding comment about 900 MHz confirms my observations about using 900 MHz. So far I'm underimpressed with noise/interference and narrow band audio on 900 MHz. Is it possible to have a linked system with good quality signal to noise and full audio? Every conversation I've had was more fatiguing that trying to talk on 160M during summer monsoons. I keep being told to link two repeaters with 900 MHz. I don't want to link my 222 MHz repeaters inband. I've already seen all the linking anecdotes about using 420-440...what should I pursue?
