Re: [Repeater-Builder] GM300 Deviation
Gm 300 does have an internal deviation setting (max dev )on the rf board side of the radio. R302 -VCO mod being max dev and R164 pot being Ref (ctcss) There is also the squelch pot R60. I do have some mods for bi-level squelch on these radios that work just as well (better ) than the Micor repeater bi-level squelch circuits. Regards Regards Brad ZS5WT --- Bob M. [EMAIL PROTECTED] wrote: If you have a laptop, install RSS on that, bring it to the site and adjust it there. Bob M. == --- Andrew G. [EMAIL PROTECTED] wrote: OK I deserve this ridicule.meant TX dev. but oh well. Thanks for the help, thought it might be in the software but did not want to pull it out of the site for nothing. Andy __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links [EMAIL PROTECTED] __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] GM300 Deviation
Is there an official procedure for adjusting both R302 and R164? I thought those were set at the factory and the RSS deviation was supposed to be used in the field. Bob M. == --- bradley glen [EMAIL PROTECTED] wrote: Gm 300 does have an internal deviation setting (max dev )on the rf board side of the radio. R302 -VCO mod being max dev and R164 pot being Ref (ctcss) There is also the squelch pot R60. I do have some mods for bi-level squelch on these radios that work just as well (better ) than the Micor repeater bi-level squelch circuits. Regards Regards Brad ZS5WT --- Bob M. [EMAIL PROTECTED] wrote: If you have a laptop, install RSS on that, bring it to the site and adjust it there. Bob M. == --- Andrew G. [EMAIL PROTECTED] wrote: OK I deserve this ridicule.meant TX dev. but oh well. Thanks for the help, thought it might be in the software but did not want to pull it out of the site for nothing. Andy __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] GM300 Deviation
Good Day Bob Yes these are factory set for the diffrent bandwidths 10/12,5/20/25khz although there is no technical reason why one can change them in the field to optimise your system. What I do is check the RSS settings and make sure they are roughly in the centre of their software and then when running up the links or repeater tx I fine tune these pots to my system deviation.Just remember that these are max settings so one must take this into account when running them up. My experience is adjust voice first as this setting has an influence on the CTCSS level adjustment. Have fun.See my web page for my repeater and other info . Regards Bradley Glen ZS5WT http://members.harc.org.za/zs5wt/ --- Bob M. [EMAIL PROTECTED] wrote: Is there an official procedure for adjusting both R302 and R164? I thought those were set at the factory and the RSS deviation was supposed to be used in the field. Bob M. == --- bradley glen [EMAIL PROTECTED] wrote: Gm 300 does have an internal deviation setting (max dev )on the rf board side of the radio. R302 -VCO mod being max dev and R164 pot being Ref (ctcss) There is also the squelch pot R60. I do have some mods for bi-level squelch on these radios that work just as well (better ) than the Micor repeater bi-level squelch circuits. Regards Regards Brad ZS5WT --- Bob M. [EMAIL PROTECTED] wrote: If you have a laptop, install RSS on that, bring it to the site and adjust it there. Bob M. == --- Andrew G. [EMAIL PROTECTED] wrote: OK I deserve this ridicule.meant TX dev. but oh well. Thanks for the help, thought it might be in the software but did not want to pull it out of the site for nothing. Andy __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links [EMAIL PROTECTED] __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Tune Procedure for Mitrek T43JJA
You might want to start here: http://www.repeater-builder.com/mitrek/mitrek-index.html Neil - WA6KLA Scott wrote: Would anyone have the tune up procedure for a VHF T43JJA Mitrek, or maybe want to part with a manual. Putting together an APRS radio, and need it. Scott NA4IT Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: DR-235 for repeater
At 12/17/2005 08:05, you wrote: With regard to interfacing radios via packet data ports. Has anyone looked at the audio flatness of these ports? Also, some rigs have a 1200 baud in/out and a 9600 baud in/out, which (apparently) have very different audio levels. I suspect there are other characteristics that are different, too. 73, Bob K0NR Can't speak directly for the DR-x35 series, but my FT-8500's 9600 baud port appears to be undeemphasized (what some call flat audio), while the 1200 baud port is deemphasized and squelched (CTCSS squelched as well if enabled). Bob NO6B Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] UHF Preamplifier
At 12/17/2005 10:15, you wrote: I've got the same setup. I also have a 4-section Celwave bandpass filter between the duplexer and preamp. I found that the 17dB gain was way too much for the receiver, and the noise level increased dramatically, to the point that I had to tighten the squelch settings. The sig strength metering went from 10 to 14uA with no signal. Why is that such a bad thing? If you add a preamp to a RX your measured noise power doesn't increase, it means that the largest source of noise in your system is still your RX that there's still room for improvement. Unless you're really worried about dynamic range, the ideal setup would be one in which the total noise power added by the addition of the preamp equals the noise present at the front end of the RX. This should provide the best balance of system noise figure dynamic range. If a 10 to 14 uA change represents 3 dB, then you'd be all set at that point. I don't know what's up with your carrier squelch. A well-designed squelch circuit shouldn't care how much noise power is present at the front end. Perhaps there's another problem with the RX: low gain in an IF stage, limiter problem, etc. that's causing the discriminator output to change with input noise power. Bob NO6B Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] UHF Preamplifier
At 12/17/2005 11:07, you wrote: Bob M. wrote: I found that the 17dB gain was way too much for the receiver, and the noise level increased dramatically, to the point that I had to tighten the squelch settings. Think about this for a minute, if the noise level increased, the squelch circuit would have seen MORE noise and rammed the squelch closed. What actually happened is, adding a better device in front of the receiver lowered the receivers total noise figure, decreasing the noise in the squelch circuit, requiring the squelch pot to be set tighter. Very common effect. Common? Must be another explanation, as you're talking apples oranges here w.r.t. noise. Remember this is FM, so more noise power at the front end doesn't mean more noise at the discriminator unless the limiter isn't being driven into limiting, which is probably what's happening. But adding a preamp can only add total noise power, never subtract. Bob NO6B Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] UHF Preamplifier
At 12/17/2005 10:21, you wrote: At 10:15 AM 12/17/2005 -0800, you wrote: I found that the 17dB gain was way too much for the receiver ---That's one reason I swear by Chip's stuff for over 15 year. He places stability and noise figure over gain. The result are preamps with extremely low noise figure, unconditional stability and reasonable gain (typically around 12 dB). Ken I thought they were around 16-17 dB. Chip claims 17 dB 500 MHz; I once measured 16. Bob NO6B Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] UHF Preamplifier
That all depends on witch pre-amp you buy what spec you need for your site noise. I also swear buy his product. Oregon Repeater Linking Group Mike Mullarkey 6539 E Street Springfield, OR 97478 www.orlg.org -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Sunday, December 18, 2005 8:36 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] UHF Preamplifier At 12/17/2005 10:21, you wrote: At 10:15 AM 12/17/2005 -0800, you wrote: I found that the 17dB gain was way too much for the receiver ---That's one reason I swear by Chip's stuff for over 15 year. He places stability and noise figure over gain. The result are preamps with extremely low noise figure, unconditional stability and reasonable gain (typically around 12 dB). Ken I thought they were around 16-17 dB. Chip claims 17 dB 500 MHz; I once measured 16. Bob NO6B Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Tune Procedure for Mitrek T43JJA
Scott, The Mitrek VHF Service Manual 6881045E70 is still available from Motorola Parts (800-422-4210) for about $30. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Scott Sent: Saturday, December 17, 2005 6:28 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Tune Procedure for Mitrek T43JJA Would anyone have the tune up procedure for a VHF T43JJA Mitrek, or maybe want to part with a manual. Putting together an APRS radio, and need it. Scott NA4IT Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: UHF Preamplifier
Speaking of UHF preamps, does anyone have any experience/recommendations for tower mounted preamps? I have a receiving only site at 425 feet AGL, DB420 antenna, 7/8 line, that feeds five receivers at present. Tried an ARR on the ground before the splitter but it seemed to overload from UHF paging transmitters a mile away. The frequecies I need to receive cover 449 to 455 mhz. with the pagers at 452 and 453. Also, 50 kw FM station on tower at receive site. In ages past I used a home-brew gasfet and just a 1/4 wave stub in front of the gasfet and it worked very well. Then came the pagers. Have had some luck with notch filters on the pagers. I'm curious as to whether an Angle Linear or another preamp would servive this kind of service. How do they fare with lightning? PITA to change something 400 feet up in the air. Coaxial bypass? Merry Christmas, Al, K9SI Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Multiple receivers one antenna ???
I would like to install one antenna for four link receivers.How complicated is this? What do I need to do this? Thanks in advance YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] Multiple receivers one antenna ???
Vincent, It's easy! What you need is known as a multicoupler. This unit usually comprises a preselector to limit the bandwidth of the incoming signals, a low-noise amplifier, and a splitter with two, four, or eight output ports. The gain of the amplifier is tailored to the number of splits so that the loss in the splitter is overcome. 73, Eric Lemmon WB6FLY From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Vincent CarusoSent: Sunday, December 18, 2005 1:04 PMTo: Repeater-Builder@yahoogroups.comSubject: [Repeater-Builder] Multiple receivers one antenna ??? I would like to install one antenna for four link receivers.How complicated is this? What do I need to do this?Thanks in advance YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] UHF Preamplifier
Think about this for a minute, if the noise level increased, the squelch circuit would have seen MORE noise and rammed the squelch closed. What actually happened is, adding a better device in front of the receiver lowered the receivers total noise figure, decreasing the noise in the squelch circuit, requiring the squelch pot to be set tighter. Very common effect. Common? Must be another explanation, as you're talking apples oranges here w.r.t. noise. Remember this is FM, so more noise power at the front end doesn't mean more noise at the discriminator unless the limiter isn't being driven into limiting, which is probably what's happening. But adding a preamp can only add total noise power, never subtract. Bob NO6B If what you are saying is correct, adding the preamplifier should have placed a receiver lacking in overall gain into full (or at least more) limiting. If so, this would have raised the noise level to the discriminator, thus tightening the squelch. He commented that he needed to set the squelch pot tighter, which means there was less noise present after the installation of the preamp. Maybe I didn't explain it well, but I have seen this effect before, even on the bench where extraneous signals quieting the receiver can be ruled out. Kevin YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] Multiple receivers one antenna ???
How about a lead to such vendors and some model numbers as well, would be helpful. Mathew Eric Lemmon [EMAIL PROTECTED] wrote: Vincent,It's easy! What you need is known as a multicoupler. This unit usually comprises a preselector to limit the bandwidth of the incoming signals, a low-noise amplifier, and a splitter with two, four, or eight output ports. The gain of the amplifier is tailored to the number of splits so that the loss in the splitter is overcome.73, Eric Lemmon WB6FLY From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Vincent CarusoSent: Sunday, December 18, 2005 1:04 PMTo: Repeater-Builder@yahoogroups.comSubject: [Repeater-Builder] Multiple receivers one antenna ??? I would like to install one antenna for four link receivers.How complicated is this? What do I need to do this?Thanks in advance YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. __Do You Yahoo!?Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] Multiple receivers one antenna ???
Good Day If you are able to lose = - 6 db of the signal to each receiver you could use a passive device which you can build yourself and save many many dollars. There is pleny of information on the web on a 4-port Wilkonson divider . The same phasing harness is used for a 4-stack dipole array so you could ask around for one or buy it off the shelf-these are frequenct contious. Regards Bradley Glen ZS5WT http://members.harc.org.za/zs5wt --- Mathew Quaife [EMAIL PROTECTED] wrote: How about a lead to such vendors and some model numbers as well, would be helpful. Mathew Eric Lemmon [EMAIL PROTECTED] wrote: Vincent, It's easy! What you need is known as a multicoupler. This unit usually comprises a preselector to limit the bandwidth of the incoming signals, a low-noise amplifier, and a splitter with two, four, or eight output ports. The gain of the amplifier is tailored to the number of splits so that the loss in the splitter is overcome. 73, Eric Lemmon WB6FLY - From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Vincent Caruso Sent: Sunday, December 18, 2005 1:04 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Multiple receivers one antenna ??? I would like to install one antenna for four link receivers. How complicated is this? What do I need to do this? Thanks in advance - YAHOO! GROUPS LINKS Visit your group Repeater-Builder on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. - __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Re: UHF Preamplifier
Al, I agree, you have a major-league headache! However, I believe that a tower-top preamp is not the solution. The 7/8 inch feedline is rather small for the frequency band and the length, with more than 3.5 dB of loss, but it'll have to do. My suggestion is to put two 8 bandpass filter cavities in series, followed by an Angle Linear preamp, followed by a coaxial attenuator, to feed each receiver. You need at least one bandpass cavity to keep the FM station from desensing your link radios, but trying to keep out a powerful paging transmitter only a few MHz away calls for at least two, and perhaps three, sharply-tuned bandpass filters. The design of a bandpass cavity is such that one end of each coupling loop is grounded, so that a following preamp is protected from static and lightning surges- provided, of course, that you have a good gas-tube arrestor in the feedline. It may be possible to use one or more large (10 inch) cavity notch filters to suck out the pagers, but the down side is that the notch skirts may still not be steep enough to avoid attenuating the desired frequencies. And a UHF preselector is too broadly tuned to pass the desired frequencies and keep out the undesired ones. If only crystal front-end filters were available for UHF! I'll bet Chip Angle will pretty much agree with this solution. Give him a call... 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Al Wolfe Sent: Sunday, December 18, 2005 12:47 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: UHF Preamplifier Speaking of UHF preamps, does anyone have any experience/recommendations for tower mounted preamps? I have a receiving only site at 425 feet AGL, DB420 antenna, 7/8 line, that feeds five receivers at present. Tried an ARR on the ground before the splitter but it seemed to overload from UHF paging transmitters a mile away. The frequecies I need to receive cover 449 to 455 MHz. with the pagers at 452 and 453. Also, 50 kW FM station on tower at receive site. In ages past I used a home-brew gasfet and just a 1/4 wave stub in front of the gasfet and it worked very well. Then came the pagers. Have had some luck with notch filters on the pagers. I'm curious as to whether an Angle Linear or another preamp would servive this kind of service. How do they fare with lightning? PITA to change something 400 feet up in the air. Coaxial bypass? Merry Christmas, Al, K9SI Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Micor and ICS SingleM Controller
Stephen Rice wrote: Well Kevin I sent some questions to the ICS group but pretty much got all the answers by playing with a touch tone pad and some wires so I could program using the Cntrl input. Messages aren't approved yet so don't show up on the group ! What I found is there are 2 errors on page 10 regarding Pin description on PL1. Pin4 is not audio for the Cntrl Rec(it is gnd according to schematic) and pin 7 which is labeled Cntrl rec cos input(schematic says it is the squelch wiper) . That was for my book that just arrived a week ago. I'll take the blame for both of these changes. These changes were implemented because I suggested to Brian that moving the Control Receiver connections off of the Main plug would allow the repeater builder to make all necessary connections from the Micor to the controller on just one plug, (IE: moving the Squelch Wiper to the Main port. I'll also take to blame for not helping Brian with the manual as I said I would 6 months or a year ago, but a lot has transpired since then and I simply haven't had the time. As for the connector I also used a 10 conductor stranded hard drive ribbon cable. I figured it would look nice and neat when in the cage. Yea, that cable can sometimes be easily broken. Individual stranded wires of the right size may be difficult to find. I use from a roll of 25 conductor cable that was originally designed for printers, works great. Kevin Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Tait receiver module T835 series I needed
Hello, I'm searching for a working Tait T835-20 or -25 series I receiver module or a source to get one. A source or seller in europe would be fine ;-) 73 Bernd DM5BM Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: UHF Preamplifier
Unless your test banch is inside a Fariday Cage you can'y rule out extraneous signals. If there is a strong transmitter near by it's still questionable. But you're right about off frequency or off channel signals causing quieting in the receiver. This is another reason for pre filtering the input to a preamp. preamps are generally broad banded devices. It's better to control what you are amplifying by 17db (read, just what's on your input frequency) than to amplify everything in the band by 17db. This sort of thing can amplify a strong co-channel signal to the point of desensing or overloading the receiver (hint, on 2 meters (VHF)your transmitter is 600Kc away) even in a quiet area. 73 MERRY CHRISTMAS AC0Y --- In Repeater-Builder@yahoogroups.com, Kevin Custer [EMAIL PROTECTED] wrote: Think about this for a minute, if the noise level increased, the squelch circuit would have seen MORE noise and rammed the squelch closed. What actually happened is, adding a better device in front of the receiver lowered the receivers total noise figure, decreasing the noise in the squelch circuit, requiring the squelch pot to be set tighter. Very common effect. Common? Must be another explanation, as you're talking apples oranges here w.r.t. noise. Remember this is FM, so more noise power at the front end doesn't mean more noise at the discriminator unless the limiter isn't being driven into limiting, which is probably what's happening. But adding a preamp can only add total noise power, never subtract. Bob NO6B If what you are saying is correct, adding the preamplifier should have placed a receiver lacking in overall gain into full (or at least more) limiting. If so, this would have raised the noise level to the discriminator, thus tightening the squelch. He commented that he needed to set the squelch pot tighter, which means there was less noise present after the installation of the preamp. Maybe I didn't explain it well, but I have seen this effect before, even on the bench where extraneous signals quieting the receiver can be ruled out. Kevin Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: UHF Preamplifier
Al, Having to cover that band you should Notch out the paging transmitters. All preamps that I know of are broad band devices and that is likely why you got over loading. I would suggest a Notch cavity for each paging frequency in series with between your antenna line and the preamp/splitter. I really think that you don't want the headaches of having a preamp at the antenna. Good luck and MERRY CHRISTMAS AC0Y --- In Repeater-Builder@yahoogroups.com, Al Wolfe [EMAIL PROTECTED] wrote: Speaking of UHF preamps, does anyone have any experience/recommendations for tower mounted preamps? I have a receiving only site at 425 feet AGL, DB420 antenna, 7/8 line, that feeds five receivers at present. Tried an ARR on the ground before the splitter but it seemed to overload from UHF paging transmitters a mile away. The frequecies I need to receive cover 449 to 455 mhz. with the pagers at 452 and 453. Also, 50 kw FM station on tower at receive site. In ages past I used a home-brew gasfet and just a 1/4 wave stub in front of the gasfet and it worked very well. Then came the pagers. Have had some luck with notch filters on the pagers. I'm curious as to whether an Angle Linear or another preamp would servive this kind of service. How do they fare with lightning? PITA to change something 400 feet up in the air. Coaxial bypass? Merry Christmas, Al, K9SI Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Re: UHF Preamplifier
Speaking of UHF preamps, does anyone have any experience/recommendations for tower mounted preamps? Al, My experiences with tower-mounted preamps have been less than perfect. Good designs will have dual amplifiers (redundant) and/or a bypass relay. Aside from amplifier damage due to lightning, a number of tower-top preamps I've seen fail did so because of problems with the window filters due to moisture causing corrosion and other problems, even in well-sealed enclosures. IMHO, in most situations you're better off in the long run with lower-loss feedline than adding gain upstairs. Unless you *really* like to climb :-) Since you're probably not going to want to change out your 7/8ths, here's what I'd do. I'm assuming that this is a receive-only installation (i.e. you're not duplexing in one or more transmitters to the antenna in question). First, measure the levels of the offending signals (paging Tx's and whatnot) at the end of the hose with a spectrum analyzer. The trace peak-hold function of most analyzers comes in handy here; let the analyzer sit there and record for a few hours or days while you go do something else. This will dictate how much attenuation of those signals you will need before any gain stages. Based on the results of those measurements, and the frequencies involved (both desired and undesired), determine the appropriate filtering and system design. The few most common designs would be: a) A window filter to pass your range of interest followed by the gain stage and power divider. This would be the simplest solution IF the offending signals are low enough after the window filter to prevent overloading the preamp. b) Same as a) above, but with reject filters after the window filter to attenuate undesired signals in the passband c) A combination of narrower-range window filters and/or spot-frequency pass cavities connected in a star configuration or a backbone configuration (a la the TX-RX T-pass design) using critical-length cables, the output of each filter then feeds its own preamp and power divider. d) Depending on how close the offending signals are to desired frequencies, you may need reject cavities after window filters or pass cavities, or pass/reject cavities after pass cavities in c) above. The FM problem will likely go away due to the rejection of the pass cavities and/or window filters, or if not, a high-pass filter ahead of everything would be the cure-all. Sometimes system designs can be altered to improve performance (noise figure) of certain bands/frequencies over others. For example, if one of your receivers is for a point-to-point link that has a lot of signal margin, you might be able to sacrifice performance on that frequency sans ill effect while improving performance for other frequencies/receivers. Without going into a lot of detail at this point, directional couplers, asymmetrical power dividers, coupling loop adjustments/cavity Q, etc. can come into play. Most multicoupler designs (and what I was envisioning when I wrote the above) place the filtering BEFORE any gain stages. However, if the offending signals are low enough in amplitude, you may be able to get away with a high dynamic range preamp without filtering, or possibly immediately after a wide low-loss window filter that passes everything in your range of interest as in example a) above. Usually the trade-off with high-level preamps is that noise figure is sacrificed for strong-signal handling capability (higher TOI/compression points), but if the filtering that would have been required in a pre-filtering design would have increased the system noise figured by a greater amount, then it may be a viable option. If you want to make some measurements and report back, I'll offer my suggestions if you want. The solution may be simple, or complex, depending on what you measure and the frequencies involved. --- Jeff Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: Q: TE systems amps info needed
Well we just installed a 1412RRN on our system this weekend and it seems like a nice unit. Yes there isn't much info out there on the web about TE Systems. So I did want to post a link to the opperating and service manual that I scanned in.. For HIGH-POWER 144-148MHz AMPLIFIER: MODEL 1412, MODEL 1412G, MODEL 1412R (It's about 8 Mb) http://24.208.20.120/web/TE_Systems-VHF_Manual.pdf --- In Repeater-Builder@yahoogroups.com, Tom Swisher WA8PYR [EMAIL PROTECTED] wrote: All; I'm getting ready to do a repeater rebuild, in which I'll be installing a TE Systems 1452RH power amp driven by a 1405S amp (driven in turn by a GE MastrII exciter). Problem is, the club doesn't have the tech docs and I really don't want to just jump in blindly and start tweaking things to get the desired power output (I'm told the 1452RH is rated at 400 watts, and we'll only be running it at 100-150 watts max). If anyone has info on the amps, please let me know!! Thanks, Tom WA8PYR Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Re: UHF Preamplifier
On a somewhat related note, has anyone used LNA Technology's (Chet Pierson K3TV) preamps? He has some interesting designs. www.lnatechnology.com --- Jeff Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Multiple receivers one antenna ???
Thanks for all the great info! YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] Multiple receivers one antenna ???
Along these lines, someone on the list mentioned using coax multi-dropped (coax tee) off to each receiver for a voter application. Can't find the original posting. I was curious about the lengths required between the antenna and then to each radio? tnx, Ralph W4XE If you are able to lose = - 6 db of the signal to each receiver you could use a passive device which you can build yourself and save many many dollars. There is pleny of information on the web on a 4-port Wilkonson divider . The same phasing harness is used for a 4-stack dipole array so you could ask around for one or buy it off the shelf-these are frequenct contious. Regards Bradley Glen ZS5WT http://members.harc.org.za/zs5wt It's easy! What you need is known as a multicoupler. This unit usually comprises a preselector to limit the bandwidth of the incoming signals, a low-noise amplifier, and a splitter with two, four, or eight output ports. The gain of the amplifier is tailored to the number of splits so that the loss in the splitter is overcome. 73, Eric Lemmon WB6FLY - From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Vincent Caruso Sent: Sunday, December 18, 2005 1:04 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Multiple receivers one antenna ??? I would like to install one antenna for four link receivers. How complicated is this? What do I need to do this? Thanks in advance Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Radio Shack 10% Off Coupon good to 12/23
Say I did see a AKAI TV set there seems like they are venturing the consumer mkt. also Sams Club carries AKAI also. I already have a RCA TV Neil McKie wrote: May work ok ... if you bother going to radio shaft at all ... Neil - WA6KLA Mike Morris wrote: Date: Fri, 16 Dec 2005 22:21:38 - Subject: Radio Shack 10% Off Coupon http://www.radioshack.com/graphics/email/RSK_12_16_05_1.html Expires 23 December Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. begin:vcard fn:Mark A. Holman n:Holman;Mark A. org:Harvest Assembly of God email;internet:[EMAIL PROTECTED] title:Webmaster, IT Student note;quoted-printable:IT, Member IEEE, Life Member ARRL, Assoc. Member SBE, CRO=0D=0A= Welcome to the Snowy stuff of Michigan=0D=0A= x-mozilla-html:TRUE url:http://www.ab8ru.org version:2.1 end:vcard
Re: [Repeater-Builder] Re: UHF Preamplifier
How many feet of 7/8 line? How high is the antenna? We try to avoid tower mounted preamps at work due to the trouble servicing them. It requires a tower climber to get to it, and then you hope that he knows how to service it. 7/8 cable should have less than 1dB of loss per 100 feet at 450Mhz. If it is a short run of cable, you would be better off putting the preamp where you can get at it, especially since you have paging interference. You will probably want to put a preselector filter in front of the preamp, if you tower mount the preamp the preselector will also have to go on the tower top. It can be done, but you really need to know what filtering you need to do before you put it on the tower top. TX/RX makes nice ones: http://www.txrx.com/ but very expensive. TX/RX had one that has redundant preamps and a bypass mode, big bucks but allowed you to switch in a backup preamp or completely bypass the preamps entirely. Also, if you have a preamp tower mounted without the bypass mode, it makes antenna troubleshooting difficult. 73, Joe, K1ike At 02:46 PM 12/18/2005 -0600, you wrote: Speaking of UHF preamps, does anyone have any experience/recommendations for tower mounted preamps? Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Re: UHF Preamplifier
At 12/18/2005 17:12, you wrote: On a somewhat related note, has anyone used LNA Technology's (Chet Pierson K3TV) preamps? He has some interesting designs. www.lnatechnology.com --- Jeff I haven't, but notice the specs on the cavity input 432 MHz preamp: 3 dB BW of 90 MHz. Bob NO6B Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Q: TE systems amps info needed
got a UHF amp from them about 2 years ago. was to be 150 watts output with 5 watts in. gave them all the info ever the freg we wanted it tuned to. when it came in is put out 134 to 137 watts with the 5 watts in. called a number of time but no call back. not sure if they still make product. went back to Vocom for all of our amp. you get what you pay for with them and no problems. John - Original Message - From: Steve [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Sunday, December 18, 2005 7:45 PM Subject: [Repeater-Builder] Re: Q: TE systems amps info needed Well we just installed a 1412RRN on our system this weekend and it seems like a nice unit. Yes there isn't much info out there on the web about TE Systems. So I did want to post a link to the opperating and service manual that I scanned in.. For HIGH-POWER 144-148MHz AMPLIFIER: MODEL 1412, MODEL 1412G, MODEL 1412R (It's about 8 Mb) http://24.208.20.120/web/TE_Systems-VHF_Manual.pdf --- In Repeater-Builder@yahoogroups.com, Tom Swisher WA8PYR [EMAIL PROTECTED] wrote: All; I'm getting ready to do a repeater rebuild, in which I'll be installing a TE Systems 1452RH power amp driven by a 1405S amp (driven in turn by a GE MastrII exciter). Problem is, the club doesn't have the tech docs and I really don't want to just jump in blindly and start tweaking things to get the desired power output (I'm told the 1452RH is rated at 400 watts, and we'll only be running it at 100-150 watts max). If anyone has info on the amps, please let me know!! Thanks, Tom WA8PYR Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Multiple receivers one antenna ???
That sounds like an interesting solution, I would be interested in learning more about it. Ralph Hogan wrote: Along these lines, someone on the list mentioned using coax multi-dropped (coax tee) off to each receiver for a voter application. Can't find the original posting. I was curious about the lengths required between the antenna and then to each radio? tnx, Ralph W4XE If you are able to lose= - 6 db of the signal to each receiver you could use a passive device which you can build yourself and save many many dollars. There is pleny of information on the webon a 4-port Wilkonson divider . The same phasing harness is used for a 4-stack dipole array so you could ask around for one or buy it off the shelf-these are frequenct contious. Regards Bradley GlenZS5WThttp://members.harc.org.za/zs5wt It's easy!What you need is known as a multicoupler.This unit usually comprises a preselector to limit the bandwidth of the incoming signals, a low-noise amplifier, and a splitter with two, four, or eight output ports.The gain of the amplifier is tailored to the number of splits so that the loss in the splitter is overcome. 73, Eric Lemmon WB6FLY - From: Repeater-Builder@yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com] On Behalf Of Vincent Caruso Sent: Sunday, December 18, 2005 1:04 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Multiple receivers one antenna ??? I would like to install one antenna for four link receivers.How complicated is this? What do I need to do this? Thanks in advance Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] Re: UHF Preamplifier
Hi Al, Both Telewave and Sinclair make tower mounted preamps, but you'd better do much planning and engineering to get the design/order right the first time. As we saw with Alex in the South American VHF trunking System. Many out of the box offerings can cause more problems vs how much they help. In short, the tower mounted preamp should have twice as much pre-selection as you would normally see supplied with the basic device. Else you introduce a nightmare into your rx antenna system... Looking at your basic site description, you're going to need a serious combination of both a very tight multi section band-pass window filter network along with serious - out of the main rx window notching on the paging frequencies. As a general rule with Telewave boxes, bypass relays are included and the system is fed operational voltage right through the feedline (no external power wires required). The advantage of the Phempt Device Preamp is the mo' betta third order intercept value. A change to a phempt type preamp will improve the overall system performance as described in the Dubus UHF preamp project at: www.radiowrench.com/sonic You didn't say how far away the pager antennas are from your main rx antenna..? Regardless of where you buy it, the phempt preamp is much better choice. As I've mentioned in the past... there is no free lunch. cheers, skipp Al Wolfe [EMAIL PROTECTED] wrote: Speaking of UHF preamps, does anyone have any experience/recommendations for tower mounted preamps? I have a receiving only site at 425 feet AGL, DB420 antenna, 7/8 line, that feeds five receivers at present. Tried an ARR on the ground before the splitter but it seemed to overload from UHF paging transmitters a mile away. The frequecies I need to receive cover 449 to 455 mhz. with the pagers at 452 and 453. Also, 50 kw FM station on tower at receive site. In ages past I used a home-brew gasfet and just a 1/4 wave stub in front of the gasfet and it worked very well. Then came the pagers. Have had some luck with notch filters on the pagers. I'm curious as to whether an Angle Linear or another preamp would servive this kind of service. How do they fare with lightning? PITA to change something 400 feet up in the air. Coaxial bypass? Merry Christmas, Al, K9SI Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: Multiple receivers one antenna ???
If you use any of the below listed devices, you'd better chuck the pre-selector (rx-filter) and put something better in front of the preamp. Been there, done that, coffee mug and tee-shirt. cheers, skipp Eric Lemmon [EMAIL PROTECTED] wrote: Good idea! Here are two: Sinclair: http://www.sinctech.com/catalog/series.aspx?id=109 TX-RX: http://txrx.com/product/product_view.aspx?UID=50E7FFB3-54D5-400A-AFF6-6B52F7 C54229 Other vendors are Telewave, Celwave, Decibel Products, and Angle Linear. Just Google receive multicouplers 73, Eric Lemmon WB6FLY _ From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Mathew Quaife Sent: Sunday, December 18, 2005 2:17 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Multiple receivers one antenna ??? How about a lead to such vendors and some model numbers as well, would be helpful. Mathew Eric Lemmon [EMAIL PROTECTED] wrote: Vincent, It's easy! What you need is known as a multicoupler. This unit usually comprises a preselector to limit the bandwidth of the incoming signals, a low-noise amplifier, and a splitter with two, four, or eight output ports. The gain of the amplifier is tailored to the number of splits so that the loss in the splitter is overcome. 73, Eric Lemmon WB6FLY _ From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Vincent Caruso Sent: Sunday, December 18, 2005 1:04 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Multiple receivers one antenna ??? I would like to install one antenna for four link receivers. How complicated is this? What do I need to do this? Thanks in advance http://img.msgtag.com/ahFm/xlcoyfwkFBjE/mmqsfrzv/sFc/ACFbd.gif _ YAHOO! GROUPS LINKS * Visit your group Repeater-Builder http://groups.yahoo.com/group/Repeater-Builder on the web. * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service http://docs.yahoo.com/info/terms/ . _ __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _ YAHOO! GROUPS LINKS * Visit your group Repeater-Builder http://groups.yahoo.com/group/Repeater-Builder on the web. * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service http://docs.yahoo.com/info/terms/ . _ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: UHF Preamplifier
Jeff DePolo WN3A [EMAIL PROTECTED] wrote: My experiences with tower-mounted preamps have been less than perfect. I've not see a perfect out of the box tower mounted rx preamp assembly... yet. Some are good and well designed, but none have been perfect. ...a number of tower-top preamps I've seen fail did so because of problems with the window filters due to moisture causing corrosion and other problems, even in well-sealed enclosures. You must provide moisture control, I've seen both heaters and fed inert gas used. IMHO, in most situations you're better off in the long run with lower-loss feedline than adding gain upstairs. Unless you *really* like to climb :-) The average Joe... yes. But if one were to do the proper homework... and spend the money on the proper equipment you need only climb the tower to install the assembly once. cheers, skipp Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: UHF Preamplifier
Joe [EMAIL PROTECTED] wrote: 7/8 cable should have less than 1dB of loss per 100 feet at 450Mhz. If it is a short run of cable, you would be better off putting the preamp where you can get at it, For 98% plus people... Joe is right on the money. Especially when a really good antenna will help make up for the loss. especially since you have paging interference. You will probably want to put a preselector filter in front of the preamp, if you tower mount the preamp the preselector will also have to go on the tower top. In front of the preamplifier(s) It can be done, but you really need to know what filtering you need to do before you put it on the tower top. Ding, ding, ding..! Give that man a cigar... Also, if you have a preamp tower mounted without the bypass mode, it makes antenna troubleshooting difficult. 73, Joe, K1ike No bypass mode makes antenna system trouble-shooting a nightmare. Smart Commercial Site managers MIGHT make that mistake ONLY ONE TIME... Experienced Site managers never make the mentioned mistake twice. Cheers Joe, skipp Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Multiple receivers one antenna ???
I've posted this a few times... **IF** loss on the incoming signal(s) isn't an issue ... 1/2-wave (or multiple thereof) jumpers, daisy-chained between Ts. [rx.ant-coax] -- [T-(rx)] -jumper- [T-(rx)] -jumper- [last rx] Our RXs did not exhibit problematic interactions -- used RG58 PL259s. Our common antenna: 1/2-w dipole: ( 2ea x 6 x #18 solid - soldered to a SO239 chassis connector) Seems to play nicely. YMMV. ~/ N8BQN /~ Vincent Caruso wrote: That sounds like an interesting solution, I would be interested in learning more about it. Ralph Hogan wrote: Along these lines, someone on the list mentioned using coax multi-dropped (coax tee) off to each receiver for a voter application. Can't find the original posting. I was curious about the lengths required between the antenna and then to each radio? Ralph W4XE Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Radio Shack 10% Off Coupon good to 12/23
From a Radioshack dealer stand point fo view, right now, you should ba able to get a 10% discount on a great majority of items from Radioshack, and yes Neil, they are giving the shaft, and many reasons why, the got the gadget guys in there, and they are always a day late, and 1/3 over priced. And the best part, Out Of Stock. I often wonder why, with 7000 stores across the world, why is Radioshacks buying power less than those that only have a third the stores. Not to mention, they are always 10% to 30% more on the cost then everyone else. GO FIGURE!They don't want to be an accessory store, unless it deals with batteries, video cables, cell phones and accessories, etc...they won't carry it. Believe it or not, they are even downsizing on the tv antenna's and home phone accessories.Ah well. Guess I go into selling fishing lures and Rods. Huniting supplies and whatnot, always got a clientell for that.Mathew "Mark A. Holman" [EMAIL PROTECTED] wrote: Say I did see a AKAI TV set there seems like they are venturing the consumer mkt. also Sams Club carries AKAI also.I already have a RCA TV Neil McKie wrote: May work ok ... if you bother going to radio shaft at all ... Neil - WA6KLA Mike Morris wrote:Date: Fri, 16 Dec 2005 22:21:38 - Subject: Radio Shack 10% Off Couponhttp://www.radioshack.com/graphics/email/RSK_12_16_05_1.htmlExpires 23 December Yahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to: [EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ begin:vcardfn:Mark A. Holmann:Holman;Mark A.org:Harvest Assembly of Godemail;internet:[EMAIL PROTECTED]title:Webmaster, IT Studentnote;quoted-printable:IT, Member IEEE, Life Member ARRL, Assoc. Member SBE, CRO=0D=0A=Welcome to the Snowy stuff of Michigan=0D=0A=x-mozilla-html:TRUEurl:http://www.ab8ru.orgversion:2.1end:vcard __Do You Yahoo!?Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] Re: Multiple receivers one antenna ???
The below is an old Decibel Products method and it does works (and was used) on their Tx Combiners. I have one here... along with some very limited paperwork on it. cheers, skipp [EMAIL PROTECTED] wrote: I've posted this a few times... **IF** loss on the incoming signal(s) isn't an issue ... 1/2-wave (or multiple thereof) jumpers, daisy-chained between Ts. [rx.ant-coax] -- [T-(rx)] -jumper- [T-(rx)] -jumper- [last rx] Our RXs did not exhibit problematic interactions -- used RG58 PL259s. Seems to play nicely. YMMV. ~/ N8BQN /~ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Radio Shack 10% Off Coupon good to 12/23
I used to have a RCA TV ... was a black and white ... got it back in the late fifties. Now I have a Sony, a Toshiba and a couple of others too. Neil Mark A. Holman wrote: Say I did see a AKAI TV set there seems like they are venturing the consumer mkt. also Sams Club carries AKAI also. I already have a RCA TV Neil McKie wrote: May work ok ... if you bother going to radio shaft at all ... Neil - WA6KLA Mike Morris wrote: Date: Fri, 16 Dec 2005 22:21:38 - Subject: Radio Shack 10% Off Coupon http://www.radioshack.com/graphics/email/RSK_12_16_05_1.html Expires 23 December Yahoo! Groups Links -- YAHOO! GROUPS LINKS + Visit your group Repeater-Builder on the web. + To unsubscribe from this group, send an email to: [EMAIL PROTECTED] + Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. -- Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Radio Shack 10% Off Coupon good to 12/23
.. And the best part, Out Of Stock. Should be called The Out House ... out of this and out of that. Neil - WA6KLA Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Re: Q: TE systems amps info needed
By any chance dos anyone have the Info on the TE SYSTEMS 2210RA 220 Repeater Amp. Happy Holidays to All Thanks Don KA9QJG Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
