[Repeater-Builder] Wanted: Dataman S4 Programmer
Anyone have a Dataman S4 Programmer that they would like to part with? I could use one for a Daniels Repeater project. 73, Joe, K1ike
[Repeater-Builder] antennas for gmrs repeater
Hey guys, Any opinions on an antenna for a gmrs repeater? It won't be going on a 300 foot tower, but it will be on the top of a hospital. I would rather not get a station master, but something that could withstand a little weather. Any ideas on the biggest bang for the buck? Thanks, Jed
[Repeater-Builder] Re: antennas for gmrs repeater
My first recommendation would be a RF Systems PD1151, but since you don't want to spend the money for a Station Master, how about a Hustler Newtronics G6-450-3? You should be able to pick one of these up for under $200. Reportedly, they stand up to the weather pretty well. The first choice PD1151 would run you about $650. --- In Repeater-Builder@yahoogroups.com, Jed Barton <[EMAIL PROTECTED]> wrote: > > Hey guys, > Any opinions on an antenna for a gmrs repeater? It won't be going on > a 300 foot tower, but it will be on the top of a hospital. > I would rather not get a station master, but something that could > withstand a little weather. > Any ideas on the biggest bang for the buck? > > Thanks, > Jed >
Re: [Repeater-Builder] Re: antennas for gmrs repeater
Check out COMTELCO antennas, they are on the web at www.comtelcoantennas.com I have many of them in service with 100% results. They are equal in gain and performance to other more expensive antennas. I recommend the ones with 1.5 inch tubes, not the smaller 1inch tube models. Lance - Original Message - From: Tony L. To: Repeater-Builder@yahoogroups.com Sent: Thursday, December 20, 2007 10:22 AM Subject: [Repeater-Builder] Re: antennas for gmrs repeater My first recommendation would be a RF Systems PD1151, but since you don't want to spend the money for a Station Master, how about a Hustler Newtronics G6-450-3? You should be able to pick one of these up for under $200. Reportedly, they stand up to the weather pretty well. The first choice PD1151 would run you about $650. --- In Repeater-Builder@yahoogroups.com, Jed Barton <[EMAIL PROTECTED]> wrote: > > Hey guys, > Any opinions on an antenna for a gmrs repeater? It won't be going on > a 300 foot tower, but it will be on the top of a hospital. > I would rather not get a station master, but something that could > withstand a little weather. > Any ideas on the biggest bang for the buck? > > Thanks, > Jed >
Re: [Repeater-Builder] antennas for gmrs repeater
Directional or omnidirectional? If directional then how about a radome protected yagi? Very low profile. I have a couple of new/old stock six element Scala yagis in that band and in factory radomes. Very well made and very heavy duty. One of them is perfect for GMRS simplex or repeater output (460-466Mhz) the other good for GMRS repeater input (466-472Mhz). They each cost $430 new but I'd sell both for $400 total + s/h for a project like this. Gary Jed Barton <[EMAIL PROTECTED]> wrote: > Hey guys, > Any opinions on an antenna for a gmrs repeater? It won't be going on > a 300 foot tower, but it will be on the top of a hospital. > I would rather not get a station master, but something that could > withstand a little weather. > Any ideas on the biggest bang for the buck? > > Thanks, > Jed > > > > > > Yahoo! Groups Links > > >
[Repeater-Builder] Re: Toko Filters For Sale
I have four sets left. Any takers before they go up for auction? 'JK jeffk wrote: > I have a supply of the TOKO 6DFB-915E-10 filters for MaxTrac 902 MHz > conversions. I'm offering them to members of the Group for $20 per pair. > > Price includes shipping. I accept PayPal, USPS money orders, and > personal checks. Email me to make payment arrangements. > > [EMAIL PROTECTED] > > 73, > Jeff W6JK
[Repeater-Builder] FS Diamond F817
About a year old and in good shape (N connector version) http://www.rfparts.com/diamond/f718a.html Contact me offlist if you're interested Ken -- President and CTO - Arcom Communications Makers of repeater controllers and accessories. http://www.arcomcontrollers.com/ Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net "We don't just make 'em. We use 'em!"
Re: [Repeater-Builder] Radial Ice, Detuning
Paul Plack wrote: > FM and TV Broadcasters go to much trouble and expense to maintain > antenna heaters to deal with this issue. Some use ice detectors which > evaluate precip and temp on the tower, to turn on the antenna heater > automatically when conditions are favorable for ice formation. > Otherwise, ice can form so fast the heaters can't keep up, and some > broadcast stations have to shut down when SWR gets too high due to > ice. heh-yeah, even 1% reflected on a 100,000 W TV station is 1000 W of reflected power! -- Jim Barbour WD8CHL
[Repeater-Builder] Duplexers
Repeater Builders, I pose to you all a question. I have two UHF duplexers, both 4 cavity pass-reject. One is a Wacom (the ubiquitous 3U rackmount guy) and the other is from a Motorola MSR2000. I have really poor equipment, and don't necessarily "trust" manufacturer specs. Anybody have an opinion on which one is better, or pros and cons to each? The rest of the RF equipment are Hamtronics T304 and R305 and a Mirage D-1010-RN. The T304 is "throttled" back so that the Mirage is making about 55-60W. I'm currently running on the MSR2000 duplexer, not tuned as well as it could be. Some desense, and some is probably curable with better tuning of the duplexer, helical preselector on the front end, etc. But so far, I'm finding the additional receiver sensitivity (over say a Mitrek/MSR or Micor) is far out-weighing the desense 73 DE N0MJS -- Cort Buffington H: +1-785-838-3034 M: +1-785-865-7206
[Repeater-Builder] TM-V7a CTCSS decode info
I recently modified my TM-V7a so that I could decode CTCSS and use it as a remote base. The images below show my modifications. Unlike the TM-G707, there are separate mute lines for VHF and UHF. These operate in the same manner as the mute line described on the Repeater-Builder website for the TM-G707. (The position of the volume control matters) http://groovin.net/ke4pjw/TM-V7a/V7-full.jpg http://groovin.net/ke4pjw/TM-V7a/V7-closeup.jpg http://groovin.net/ke4pjw/TM-V7a/IMG_5468.JPG In this configuration, I am only able to use the UHF portion of the radio. However, I believe two diodes can be used to create an OR gate so that both lines can be used to drive the inverter/buffer circuit. The caveat to that configuration is that the unused band can cause the receiver to open. You would have to set it to a CTCSS that is unlikely to open the receiver. Hope someone else find this information useful. Regards, Terry Trapp KE4PJW
[Repeater-Builder] Re: Duplexers
> Cort Buffington <[EMAIL PROTECTED]> wrote: > Repeater Builders, > I pose to you all a question. I have two UHF duplexers, both 4 > cavity pass-reject. One is a Wacom (the ubiquitous 3U rackmount > guy) and the other is from a Motorola MSR2000. Both very fine units for what they are. > I have really poor equipment, and don't necessarily "trust" > manufacturer specs. Anybody have an opinion on which one is > better, or pros and cons to each? Nothing bad to say about each one... > The rest of the RF equipment are Hamtronics T304 and R305 > and a Mirage D-1010-RN. The T304 is "throttled" back so > that the Mirage is making about 55-60W. I'm currently running > on the MSR2000 duplexer, not tuned as well as it could be. > Some desense, and some is probably curable with better tuning > of the duplexer, Nat's-a$$ alignment of the duplexer including the notch positions will make a large difference in the overall system performance. > helical preselector on the front end, etc. Depends on how the helical pre-selector is constructed. Some designs have active included active preamplifiers and some are straight forward filters, which are "only so helpful". > But so far, I'm finding the additional receiver sensitivity > (over say a Mitrek/MSR or Micor) is far out-weighing the desense > 73 DE N0MJS > Cort Most of the current Hamtronics Receivers are red-hot in the sensitivity department, pretty fair in the 3rd order intercept performance and "fair" in the "blocking" performance spec. The elephant in the room is the 60 watt output PA and the relatively unprotected receiver front end. A complete/proper duplexer alignment will be the most bang for your buck. In specific you need to ensure the duplexer band-reject notch frequencies are properly spaced. A non-technical broad statement regarding duplexer notch and band-pass operation. Relative to the grand scheme of things more relative performance is often gained with strong/deep notch-out performance (of the unwanted other frequency) versus band-pass only (of the desired frequency). Folks with modest resources often adjust band-pass, band-reject duplexers using the max power into a watt meter/load method. Much system performance is lost when the reject-notch tuning is discounted or ignored for lack of proper test equipment. Unless you know for sure someone has properly aligned the duplexer notch (band-reject) positions you can and should assume they are not exactly in the best possible position. Once again... the duplexer reject notch adjustment is another one of the few repeater performance "free lunch" items, which should not be ignored. Because there are only a few "free lunch" items on the menu. cheers, s.
RE: [Repeater-Builder] Radial Ice, Detuning
Isn't it amazing how little 1% affects us as compared to the big boys? Lol Chris From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Jim Sent: Thursday, December 20, 2007 12:26 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Radial Ice, Detuning Paul Plack wrote: > FM and TV Broadcasters go to much trouble and expense to maintain > antenna heaters to deal with this issue. Some use ice detectors which > evaluate precip and temp on the tower, to turn on the antenna heater > automatically when conditions are favorable for ice formation. > Otherwise, ice can form so fast the heaters can't keep up, and some > broadcast stations have to shut down when SWR gets too high due to > ice. heh-yeah, even 1% reflected on a 100,000 W TV station is 1000 W of reflected power! -- Jim Barbour WD8CHL
RE: [Repeater-Builder] Radial Ice, Detuning
I had a system at a UHF TV station site for a while, and it really hits home when you look up at the ceiling and see two Bird line sections mounted into the transmitter feedline... one line section is for forward power, the second, bolted in line with the first, is for reverse. Then you notice that the REVERSE power slug is 5kw Mike WA6ILQ At 04:18 PM 12/20/07, you wrote: Isn't it amazing how little 1% affects us as compared to the big boys? Lol Chris From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Jim Sent: Thursday, December 20, 2007 12:26 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Radial Ice, Detuning Paul Plack wrote: > FM and TV Broadcasters go to much trouble and expense to maintain > antenna heaters to deal with this issue. Some use ice detectors which > evaluate precip and temp on the tower, to turn on the antenna heater > automatically when conditions are favorable for ice formation. > Otherwise, ice can form so fast the heaters can't keep up, and some > broadcast stations have to shut down when SWR gets too high due to > ice. heh-yeah, even 1% reflected on a 100,000 W TV station is 1000 W of reflected power! -- Jim Barbour WD8CHL
Re: [Repeater-Builder] Re: Toko Filters For Sale
I'll take two. Paul Metzger K6EH --- On Dec 20, 2007, at 09:13, jeffk wrote: > I have four sets left. Any takers before they go up for auction? > > 'JK > > jeffk wrote: > >> I have a supply of the TOKO 6DFB-915E-10 filters for MaxTrac 902 MHz >> conversions. I'm offering them to members of the Group for $20 per >> pair. >> >> Price includes shipping. I accept PayPal, USPS money orders, and >> personal checks. Email me to make payment arrangements. >> >> [EMAIL PROTECTED] >> >> 73, >> Jeff W6JK > > > > > > > > Yahoo! Groups Links > > >
Re: [Repeater-Builder] Re: Toko Filters For Sale
I don't believe Jeff will know of your desire unless you send e-mail to him directly, at the address down at the bottom of his original message. Bob M. == --- Paul Metzger <[EMAIL PROTECTED]> wrote: > I'll take two. > > Paul Metzger > K6EH > > --- > > > On Dec 20, 2007, at 09:13, jeffk wrote: > > > I have four sets left. Any takers before they go > up for auction? > > > > 'JK > > > > jeffk wrote: > > > >> I have a supply of the TOKO 6DFB-915E-10 filters > for MaxTrac 902 MHz > >> conversions. I'm offering them to members of the > Group for $20 per > >> pair. > >> > >> Price includes shipping. I accept PayPal, USPS > money orders, and > >> personal checks. Email me to make payment > arrangements. > >> > >> [EMAIL PROTECTED] > >> > >> 73, > >> Jeff W6JK Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
Re: [Repeater-Builder] Re: Which 440 Synthesized radio to use with IRLP?
Jim Brown wrote: > One comment on using the Alinco radios. A buddy ran > one on EchoLink and had some cooling issues. He wound > up putting a muffin fan near the radio, and then had a > hum issue due to coupling to the fan motor. So plan > your install carefully with respect to cooling, and > take care not to get into the hum issue with whatever > fan you use. Another comment about Alincos used for any kind of link where CTCSS switching is used: They have extremely slow CTCSS decoders. You can fix it by adding a TS-64. http://www.irlpcables.com/AlincoTS64.html Nate WY0X
[Repeater-Builder] Duplexers
Looking for factory alignment for the following Telwave TPRD 1554 Wacom WP655-R2 Ralph, W7HSG --- Begin Message --- Check out COMTELCO antennas, they are on the web at www.comtelcoantennas.com I have many of them in service with 100% results. They are equal in gain and performance to other more expensive antennas. I recommend the ones with 1.5 inch tubes, not the smaller 1inch tube models. Lance - Original Message - From: Tony L. To: Repeater-Builder@yahoogroups.com Sent: Thursday, December 20, 2007 10:22 AM Subject: [Repeater-Builder] Re: antennas for gmrs repeater My first recommendation would be a RF Systems PD1151, but since you don't want to spend the money for a Station Master, how about a Hustler Newtronics G6-450-3?You should be able to pick one of these up for under $200. Reportedly, they stand up to the weather pretty well. The first choice PD1151 would run you about $650.--- In Repeater-Builder@yahoogroups.com, Jed Barton <[EMAIL PROTECTED]> wrote:>> Hey guys,> Any opinions on an antenna for a gmrs repeater? It won't be going on > a 300 foot tower, but it will be on the top of a hospital.> I would rather not get a station master, but something that could > withstand a little weather.> Any ideas on the biggest bang for the buck?> > Thanks,> Jed> --- End Message ---
RE: [Repeater-Builder] Duplexers
Ralph, Contact Telewave at www.telewave.com for both Telewave and Wacom duplexer tuning information. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Thursday, December 20, 2007 6:17 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Duplexers Looking for factory alignment for the following Telwave TPRD 1554 Wacom WP655-R2 Ralph, W7HSG
RE: [Repeater-Builder] antennas for gmrs repeater
Jed, You really can't go wrong with a Decibel Products (Andrew) DB-404, for less than $400. It has great durability, and its coverage pattern is very uniform. It is a dual-dipole antenna that can be set for omni or elliptical pattern. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Jed Barton Sent: Thursday, December 20, 2007 6:48 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] antennas for gmrs repeater Hey guys, Any opinions on an antenna for a gmrs repeater? It won't be going on a 300 foot tower, but it will be on the top of a hospital. I would rather not get a station master, but something that could withstand a little weather. Any ideas on the biggest bang for the buck? Thanks, Jed
Re: [Repeater-Builder] Re: Duplexers
Thanks Skipp025! I have an old Lampkin service monitor and I've been tuning the duplexer by using my handheld as a receiver with the Lampkin as the generator. It just doesn't have enough oomph for proper tuning of the reject portion of 2 cans in series So I'm working "somewhere" in the notch... not good enough. I'll be looking for use of a proper service monitor, and probably keep using the MSR2000 unit -- it fits my installation better than the Wacom. On Dec 20, 2007, at 6:09 PM, skipp025 wrote: > > Cort Buffington <[EMAIL PROTECTED]> wrote: > > Repeater Builders, > > I pose to you all a question. I have two UHF duplexers, both 4 > > cavity pass-reject. One is a Wacom (the ubiquitous 3U rackmount > > guy) and the other is from a Motorola MSR2000. > > Both very fine units for what they are. > > > I have really poor equipment, and don't necessarily "trust" > > manufacturer specs. Anybody have an opinion on which one is > > better, or pros and cons to each? > > Nothing bad to say about each one... > > > The rest of the RF equipment are Hamtronics T304 and R305 > > and a Mirage D-1010-RN. The T304 is "throttled" back so > > that the Mirage is making about 55-60W. I'm currently running > > on the MSR2000 duplexer, not tuned as well as it could be. > > Some desense, and some is probably curable with better tuning > > of the duplexer, > > Nat's-a$$ alignment of the duplexer including the notch positions > will make a large difference in the overall system performance. > > > helical preselector on the front end, etc. > > Depends on how the helical pre-selector is constructed. Some designs > have active included active preamplifiers and some are straight > forward filters, which are "only so helpful". > > > But so far, I'm finding the additional receiver sensitivity > > (over say a Mitrek/MSR or Micor) is far out-weighing the desense > > 73 DE N0MJS > > Cort > > Most of the current Hamtronics Receivers are red-hot in the > sensitivity department, pretty fair in the 3rd order intercept > performance and "fair" in the "blocking" performance spec. > > The elephant in the room is the 60 watt output PA and the > relatively unprotected receiver front end. > > A complete/proper duplexer alignment will be the most bang for > your buck. In specific you need to ensure the duplexer band-reject > notch frequencies are properly spaced. > > A non-technical broad statement regarding duplexer notch and > band-pass operation. Relative to the grand scheme of things more > relative performance is often gained with strong/deep notch-out > performance (of the unwanted other frequency) versus band-pass > only (of the desired frequency). > > Folks with modest resources often adjust band-pass, band-reject > duplexers using the max power into a watt meter/load method. > Much system performance is lost when the reject-notch tuning > is discounted or ignored for lack of proper test equipment. > > Unless you know for sure someone has properly aligned the duplexer > notch (band-reject) positions you can and should assume they > are not exactly in the best possible position. > > Once again... the duplexer reject notch adjustment is another > one of the few repeater performance "free lunch" items, which > should not be ignored. Because there are only a few "free lunch" > items on the menu. > > cheers, > s. > > > 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: Which 440 Synthesized radio to use with IRLP?
At 12/20/2007 18:08, you wrote: >Jim Brown wrote: > > One comment on using the Alinco radios. A buddy ran > > one on EchoLink and had some cooling issues. He wound > > up putting a muffin fan near the radio, and then had a > > hum issue due to coupling to the fan motor. So plan > > your install carefully with respect to cooling, and > > take care not to get into the hum issue with whatever > > fan you use. > >Another comment about Alincos used for any kind of link where CTCSS >switching is used: > >They have extremely slow CTCSS decoders. This applies to the newer models, but the DR-605's (optional) decoder doesn't have this problem. Bob NO6B
[Repeater-Builder] Re: Toko Filters For Sale
It did take me a few hours to catch up this way. I try to read the group every day. :) 'JK --- In Repeater-Builder@yahoogroups.com, "Bob M." <[EMAIL PROTECTED]> wrote: > > I don't believe Jeff will know of your desire unless > you send e-mail to him directly, at the address down > at the bottom of his original message. > > Bob M. > == > --- Paul Metzger <[EMAIL PROTECTED]> wrote: > > > I'll take two. > > > > Paul Metzger > > K6EH > > > > --- > > > > > > On Dec 20, 2007, at 09:13, jeffk wrote: > > > > > I have four sets left. Any takers before they go > > up for auction? > > > > > > 'JK > > > > > > jeffk wrote: > > > > > >> I have a supply of the TOKO 6DFB-915E-10 filters > > for MaxTrac 902 MHz > > >> conversions. I'm offering them to members of the > > Group for $20 per > > >> pair. > > >> > > >> Price includes shipping. I accept PayPal, USPS > > money orders, and > > >> personal checks. Email me to make payment > > arrangements. > > >> > > >> [EMAIL PROTECTED] > > >> > > >> 73, > > >> Jeff W6JK > > > > Be a better friend, newshound, and > know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ >
