[Repeater-Builder] Single repeater antennas vs. dual-band repeater antennas...
I am new to your Yahoo groups, but I have been associated with our repeater System, since 1985. It is my turn to lead the technical department of maintaining our 12 repeaters. One of our repeaters has been using a Comet Dual-band antenna, since at least 1968. We have found times with poor receive. I have a preference for Station Master antennas. Although, most of our sites are simulacasting on VHF UHF. So, dual-band antennas where also used over the years. Direct me to locating old archive articles, or new ones on determining, which antennas are good replacements? Including proper installation of these antennas. On the sites with unused parts of these dual-band antennas, should the unused section of the antenna be terminated? With a short or 50 ohm termination? Aloha, Jim Kh6jkg http://www.qsl.net/earc/ When visiting, Hawaii, I hope to QSO on our system. 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] Mountain Lion time!
I have the Arizona hunting regulations in front of me and you CAN hunt mountian lion here. just my .02 worthQ [EMAIL PROTECTED] wrote: Tell that to the MULE!Jim B. wrote:I can't help but wonder what a mountain lion tasteslike. Bad idea.Just leave it alone...ignore it.I think they're still federally protected. 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/KE7FYCAZ Fire Fighter III/EMT Yahoo! Autos. Looking for a sweet ride? Get pricing, reviews, & more on new and used cars. 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] Single repeater antennas vs. dual-band repeater antennas...
On Sat, 28 Jan 2006, Jim Connell, KH6JKG wrote: I have a preference for Station Master antennas. Although, most of our sites are simulacasting on VHF UHF. So, dual-band antennas where also used over the years. You may be able to hack around this if you can get permission to install another antenna below your current antenna. Then get a diplexer, place it up the tower and mount the other band's super stationmaster upside-down below the primary one. You'll have to see about water drainage issues, of course. On the sites with unused parts of these dual-band antennas, should the unused section of the antenna be terminated? With a short or 50 ohm termination? Seems preferable to do so as some sites have reported interference issues from unterminated coax in the building attached to antennas on the tower no longer in use. -- Kris Kirby, KE4AHR [EMAIL PROTECTED] BIG BROTHER IS WATCHING YOU! This message brought to you by the US Department of Homeland Security 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] Mountain Lion time!
On Wed, 25 Jan 2006, Michael Shaffer wrote: I can't help but wonder what a mountain lion tastes like. Generally speaking, most predators make very poor eating because of thier own eating habits in addition to the general starvation they put up with. Beef, pork, mutton, and poultry all pretty much eat vegetable matter. I can't think of an example off the top of my head of anything we eat or have availible that eats meat for our general consumption. -- Kris Kirby, KE4AHR [EMAIL PROTECTED] BIG BROTHER IS WATCHING YOU! This message brought to you by the US Department of Homeland Security 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] Mountain Lion time!
Snipping here ... [EMAIL PROTECTED] wrote: From: Nate Duehr [EMAIL PROTECTED] Date: Thu Jan 26 01:18:59 CST 2006 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Mountain Lion time! DCFluX wrote: I had reports of a bobcat banging it's head on the door of a building trying to eat two telephone guys down near Phoenix. Us telephone guys are tasty. I hear we also taste like chicken. Nate WY0X Depends on who you work for...Verizn, SBC, etc. Wasnt SBC bought out by AT T ?? for a lions share??--mark h. :-) Dan KA8YPY 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/ -- MZ 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. email;internet:[EMAIL PROTECTED] title:Webmaster, IT Student note;quoted-printable:IT, Student Member IEEE, Life Member ARRL, Assoc. Member SBE, CRO, ARRL= VE=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] using two radios in tandem
Simulcast can happen on 2 separate frequencies using a device to do it. You will also reccomend spacing of both transcievers several miles away. off hand I cannot recall the manufacture of such a device unless someone on this group sells them. mark h. Paul Holm wrote: Ihave a particular situation where I'd like to use two radios in tandem. The purpose is to be able to run a net on two repeaters which are not linked. I am looking at using GE Phoenix radios because of cost and availability. The idea is to interface two radios in order that they would TX in tandem(and RX in tandem) using one microphone. My thought is that it would be straightforward to tie the PTT lines together. Does anyone have any advice on the microphone connections? Could the MIC HI and GND lines simply be paralleled? Thanks, Paul -- MZ 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. email;internet:[EMAIL PROTECTED] title:Webmaster, IT Student note;quoted-printable:IT, Student Member IEEE, Life Member ARRL, Assoc. Member SBE, CRO, ARRL= VE=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] Digitac Voter Comparator Service Manual
Do you have the model number? Neil Keith Dobbins wrote: Anyone know the part number for the digitac voter comparator from motorola? I have received a few of these and would like to get them going on our repeater system. Any quick start info or pinouts would be great as well. Can order from motorola if I can find the part number for the manual but not having any luck. Thanks!!! Keith Dobbins KC8RFW Parkersburg, WV 26104 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] Mountain Lion time!
Other way 'round ... the young eating their parents. Take *THAT*, Judge Green... ! SBC scarfed up ATT, including the name, logo, and ticker symbol. T shareholders got 0.855 in SBC, rebranded back to T That's wny you're confused. Mark A. Holman wrote: Wasnt SBC bought out by AT T ?? for a lions share?? -- mark h. :-) 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: Digitac Voter Comparator Service Manual
--- In Repeater-Builder@yahoogroups.com, Keith Dobbins [EMAIL PROTECTED] wrote: Anyone know the part number for the digitac voter comparator... _ 6806908B19 The DigiTac is a complicated beast but mastering it is worth the time. It is much more versatile than the older SpectraTac comparator and performs better as well. 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] Single repeater antennas vs. dual-band repeater antennas...
Why would you mount the second antenna upside down??? Is this to keep the coax to the two antennas close together and gain the loss through the coax to the upside down antenna?? Is it to ensure early failure of the upside down antenna because of moisture buildup?? Is it to cause the signal to go toward space rather than back to the ground due to any possible down tilt built into the antenna?? I would use folded dipole antennas due to their grounded nature. The colinear antenna tend to have problems with flexing and lightning. When all but the bottom quarter wave section is disconnected due to flexing or lightning, there is no way to determine that you have an antenna problem from the ground. Just my thoughts. YMMV. 73 Glenn WB4UIV Over 30 years in the amateur service. At 07:32 AM 01/29/06, you wrote: On Sat, 28 Jan 2006, Jim Connell, KH6JKG wrote: I have a preference for Station Master antennas. Although, most of our sites are simulacasting on VHF UHF. So, dual-band antennas where also used over the years. You may be able to hack around this if you can get permission to install another antenna below your current antenna. Then get a diplexer, place it up the tower and mount the other band's super stationmaster upside-down below the primary one. You'll have to see about water drainage issues, of course. On the sites with unused parts of these dual-band antennas, should the unused section of the antenna be terminated? With a short or 50 ohm termination? Seems preferable to do so as some sites have reported interference issues from unterminated coax in the building attached to antennas on the tower no longer in use. -- Kris Kirby, KE4AHR [EMAIL PROTECTED] BIG BROTHER IS WATCHING YOU! This message brought to you by the US Department of Homeland Security 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: Digitac Voter Comparator Service Manual
I meant the service manual for these, I have various ones with 4 to 16 channel configurations. Mainly Q2984A and Q2988A. I think I found the part number of the service manual with it being 6806908B19. Thanks! Keith Dobbins KC8RFW --- In Repeater-Builder@yahoogroups.com, Neil McKie [EMAIL PROTECTED] wrote: Do you have the model number? Neil Keith Dobbins wrote: Anyone know the part number for the digitac voter comparator from motorola? I have received a few of these and would like to get them going on our repeater system. Any quick start info or pinouts would be great as well. Can order from motorola if I can find the part number for the manual but not having any luck. Thanks!!! Keith Dobbins KC8RFW Parkersburg, WV 26104 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] using two radios in tandem
I am not an expert, but the first mic circuit would need an impedance transformer, to keep the indivual mic circuits balanced or the audio level will be less. 73's, Jim Kh6jkg. __ Switch to Netscape Internet Service. As low as $9.95 a month -- Sign up today at http://isp.netscape.com/register Netscape. Just the Net You Need. New! Netscape Toolbar for Internet Explorer Search from anywhere on the Web and block those annoying pop-ups. Download now at http://channels.netscape.com/ns/search/install.jsp Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] using two radios in tandem
We're not talking hi-fi here. Many radios are nominally 600 ohm input impedance and it's definitely not critical. Sure, you could end up with a 300 ohh load, but the mikes also have preamps in them, so they probably don't care either. Just talk 3dB louder. Bob M. == --- [EMAIL PROTECTED] wrote: I am not an expert, but the first mic circuit would need an impedance transformer, to keep the indivual mic circuits balanced or the audio level will be less. 73's, Jim Kh6jkg. __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Watercom VS-2
Does anyone have any information on the Watercom VS-2 and a schematic on this. You can e-mail me the information to: Stephen (WA6LDV) [EMAIL PROTECTED] Thank you... 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: Digitac Voter Comparator Service Manual
Unfortunately, I am unable to assist you. Neil Keith Dobbins wrote: I meant the service manual for these, I have various ones with 4 to 16 channel configurations. Mainly Q2984A and Q2988A. I think I found the part number of the service manual with it being 6806908B19. Thanks! Keith Dobbins KC8RFW --- In Repeater-Builder@yahoogroups.com, Neil McKie [EMAIL PROTECTED] wrote: Do you have the model number? Neil Keith Dobbins wrote: Anyone know the part number for the digitac voter comparator from motorola? I have received a few of these and would like to get them going on our repeater system. Any quick start info or pinouts would be great as well. Can order from motorola if I can find the part number for the manual but not having any luck. Thanks!!! Keith Dobbins KC8RFW Parkersburg, WV 26104 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] Single repeater antennas vs. dual-bandrepeater antennas...
Glenn Little WB4UIV [EMAIL PROTECTED] wrote: Why would you mount the second antenna upside down??? Is this to keep the coax to the two antennas close together and gain the loss through the coax to the upside down antenna?? Is it to ensure early failure of the upside down antenna because of moisture buildup?? Is it to cause the signal to go toward space rather than back to the ground due to any possible down tilt built into the antenna?? I would use folded dipole antennas due to their grounded nature. The colinear antenna tend to have problems with flexing and lightning. When all but the bottom quarter wave section is disconnected due to flexing or lightning, there is no way to determine that you have an antenna problem from the ground. Just my thoughts. YMMV. 73 Glenn WB4UIV Over 30 years in the amateur service. Kh6jkgThanks for your emails, Glen, WB4UIV, Kris Kirby, KE4AHR [EMAIL PROTECTED] Over the years, we have installed dual-band comet or X-50. Since we simulcast on VHF UHF, we use dual band antennas, one feed line a diplexer, which is connected to each duplexer or two separate antennas, (1-VHF, 1-UHF) with two feed lines, on different towers, to each repeater. I will keep your comments in mind, when mounting separate Uhf/Vhf antennas systems on the same towers. One X-50 has great range, it must be the good ground system on the Cell tower. 73's, Jim Kh6jkg. At 07:32 AM 01/29/06, you wrote: On Sat, 28 Jan 2006, Jim Connell, KH6JKG wrote: I have a preference for Station Master antennas. Although, most of our sites are simulacasting on VHF UHF. So, dual-band antennas where also used over the years. You may be able to hack around this if you can get permission to install another antenna below your current antenna. Then get a diplexer, place it up the tower and mount the other band's super stationmaster upside-down below the primary one. You'll have to see about water drainage issues, of course. On the sites with unused parts of these dual-band antennas, should the unused section of the antenna be terminated? With a short or 50 ohm termination? Seems preferable to do so as some sites have reported interference issues from unterminated coax in the building attached to antennas on the tower no longer in use. -- Kris Kirby, KE4AHR [EMAIL PROTECTED] BIG BROTHER IS WATCHING YOU! This message brought to you by the US Department of Homeland Security __ Switch to Netscape Internet Service. As low as $9.95 a month -- Sign up today at http://isp.netscape.com/register Netscape. Just the Net You Need. New! Netscape Toolbar for Internet Explorer Search from anywhere on the Web and block those annoying pop-ups. Download now at http://channels.netscape.com/ns/search/install.jsp Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Single repeater antennas vs. dual-band repeater antennas...
DB makes the DB-314, essentially a 8 UHF dipoles (6.6db gain) and 4 high band dipoles (3db gain) on the same mast, with separate feedlines. Add a TX-RX diplexer (the model made for tower-top use) and you've got a commercial-spec dual band antenna. Install it properly and you can ignore it for 20 years. Spec sheet at http://www.repeater-builder.com/db/db-314.pdf Or if you have someone good with a welder you can make your own. http://www.repeater-builder.com/antenna/440fdipl.pdf shows you how, and for the 2m side use http://www.repeater-builder.com/db/db-224e-diagram-dz.pdf and for the 440 side use http://www.repeater-builder.com/db/db-404-b-diagram.pdf but note that the measurements on the last diagram are for a 450-470 antenna. Further comments in the text below. At 04:32 AM 1/29/06, Kris Kirby, KE4AHR [EMAIL PROTECTED] wrote: On Sat, 28 Jan 2006, Jim Connell, KH6JKG wrote: I have a preference for Station Master antennas. But you get duplex noise after a while, especially if you don't side mount it with a top brace. See http://www.repeater-builder.com/antenna/cracking.html. All of the above articles are referenced from the web page at http://www.repeater-builder.com/rbtip/ant-sys-index.html Although, most of our sites are simulacasting on VHF UHF. So, dual-band antennas where also used over the years. You may be able to hack around this if you can get permission to install another antenna below your current antenna. Then get a diplexer, place it up the tower and mount the other band's super stationmaster upside-down below the primary one. You'll have to see about water drainage issues, of course. And you may have to order the lower antenna specifically for inverted mounting. Yes, you can get them that way. On the sites with unused parts of these dual-band antennas, should the unused section of the antenna be terminated? With a short or 50 ohm termination? Seems preferable to do so as some sites have reported interference issues from unterminated coax in the building attached to antennas on the tower no longer in use. True. And cell-site surplus 5w and 10w 50 ohm loads are frequently on eBay fairly cheap. I saw a pack of ten 10w N-male loads go for $40 about a year ago. Add a double N female adapter to one of those and you have an instant feedline terminator. Mike WA6ILQ 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] using two radios in tandem
I did this once a long time ago,put 2 mic elements in one case,wired two ptt lines on seperate sides of the switch,no interconnections between rigs at all! Added a selector switch to select either or both. Worked perfectly even with completely different radios73,Lee Bob M. wrote: We're not talking hi-fi here. Many radios are nominally 600 ohm input impedance and it's definitely not critical. Sure, you could end up with a 300 ohh load, but the mikes also have preamps in them, so they probably don't care either. Just talk 3dB louder. Bob M. == --- [EMAIL PROTECTED] wrote: I am not an expert, but the first mic circuit would need an impedance transformer, to keep the indivual mic circuits balanced or the audio level will be less. 73's, Jim Kh6jkg. 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] using two radios in tandem
Here is a little mixer circuit that will work for mixing mics. I never built this one to really speak for how well it works. http://www.aaroncake.net/circuits/mixer2.htm N3FLR - Frank On 1/29/2006 2:11 PM, [EMAIL PROTECTED] wrote: I am not an expert, but the first mic circuit would need an impedance transformer, to keep the indivual mic circuits balanced or the audio level will be less. 73's, Jim Kh6jkg. __ Switch to Netscape Internet Service. As low as $9.95 a month -- Sign up today at http://isp.netscape.com/register Netscape. Just the Net You Need. New! Netscape Toolbar for Internet Explorer Search from anywhere on the Web and block those annoying pop-ups. Download now at http://channels.netscape.com/ns/search/install.jsp Yahoo! Groups Links -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 267.14.23/243 - Release Date: 1/27/2006 Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Single repeater antennas vs. dual-band repeater antennas...
On the sites with unused parts of these dual-band antennas, should the unused section of the antenna be terminated? With a short or 50 ohm termination? I would ALWAYS terminate with a 50 Ohm load, even it if is just a resister. Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Need RLC-ICM?
Anyone have a RLC-ICM to sell? 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] 6 meter repeater with 2 meter link?
Not true. Linking has been allowed on 6 meters for a few years now. ALL links control are requered to be on 222 MHZ above as wireline linking control has always been legal. -- Original Message -- Received: Sat, 28 Jan 2006 09:04:48 AM CST From: Chuck Kraly [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] 6 meter repeater with 2 meter link? Well for one, According to the FCC rules, ALL links and control must be done above 222Mhz -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of rthollenbeck Sent: Saturday, January 28, 2006 8:27 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] 6 meter repeater with 2 meter link? I have a good site avaialible to me (2 good sites) for a repeater. So I was thinking about putting in a repeater on 6 meters Is there any good reason why I should not link a the sites on a 2 meter fequency. I have Mastr II for 6 meters and I have access to a low power Mastr II for the link that will tune to 2 meters. I don't have a UHF mastrII Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 267.14.23/243 - Release Date: 1/27/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 267.14.23/243 - Release Date: 1/27/2006 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] FS: MP100 Repeater Controller $225.00 OBO
I had bought this to use on my repeater. Never got around to using it, and kept my 5k controller (no bells and whistles). It's in an metal box enclosure, and works perfectly. Does voice synthesis and much more. Here is a link for some info: http://hamradio.lakki.iki.fi/new/Repeaters/Controllers/mp100_repeater_controller/mp100_design.html#MACROS%20ZONES%20COMMANDS Works great. I am just selling off my excess stuff. If I don't sell it on here, I will end up posting it on EBay. Thanks. -Shawn 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] FS: MP100 Repeater Controller $225.00 OBO
Very interested. How much? With the proper code will it set the PL tone on and announce PL tone xxx on Beginner here, bear with me. Thanks... Bruce Bruce Van Houten B.S., RT (R)KB1IIX [EMAIL PROTECTED] On Jan 29, 2006, at 10:43 AM, Shawn Mielke wrote: I had bought this to use on my repeater. Never got around to using it, and kept my 5k controller (no bells and whistles). It's in an metal box enclosure, and works perfectly. Does voice synthesis and much more. Here is a link for some info: http://hamradio.lakki.iki.fi/new/Repeaters/Controllers/ mp100_repeater_controller/mp100_design.html#MACROS%20ZONES%20COMMANDS Works great. I am just selling off my excess stuff. If I don't sell it on here, I will end up posting it on EBay. Thanks. -Shawn 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] Digest Number 3581
73, Dick - Original Message - From: "rthollenbeck" [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: 28 January, 2006 06:26 Subject: [Repeater-Builder] 6 meter repeater with 2 meter link? I have a good site avaialible to me (2 good sites) for a repeater. So I was thinking about putting in a repeater on 6 meters Is there any good reason why I should not link a the sites on a 2 meter fequency. I have Mastr II for 6 meters and I have access to a low power Mastr II for the link that will tune to 2 meters. I don't have a UHF mastrII - Locally for awhile there was a split site 6meter repeater tied together with 2m. The 2m simplex freq was listed as a remote base. The caveat was the two dedicated land lines for control. The system worked well till one of the sites was lost. 73 Greg WG8Z 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] 6 meter repeater with 2 meter link?
I sure thought I remembered a few years ago that the FCC started to allow linking on 6 meters, in order to get more activity there. -- Original Message -- Received: Sun, 29 Jan 2006 06:45:59 PM CST From: mch [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] 6 meter repeater with 2 meter link? No - above 222.150 MHz, and not on 6M at all. Joe M. JOHN MACKEY wrote: Linking is not legal on 2 meters. All links must be on 6 meters or above 222 MHz. 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] 6 meter repeater with 2 meter link?
This means no linking USING a six meter frequency...not that 6m machines can't be linked. At 07:52 PM 1/29/2006, you wrote: I sure thought I remembered a few years ago that the FCC started to allow linking on 6 meters, in order to get more activity there. -- Original Message -- Received: Sun, 29 Jan 2006 06:45:59 PM CST From: mch [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] 6 meter repeater with 2 meter link? No - above 222.150 MHz, and not on 6M at all. Joe M. JOHN MACKEY wrote: Linking is not legal on 2 meters. All links must be on 6 meters or above 222 MHz. Yahoo! Groups Links Yahoo! Groups Links Thanks, Robin Midgett K4IDC VHF+ Glutton EM66se 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] Hamtronics PLL exciter
As we have had many issues with our 220 PLL exciter with microphonics and other noise, most of this was traced down to the final amp stage. This stage uses a Phillips to-38 style transistor which has the collector commen to the case, and Hamtronics puts a big heatsink on the case! Needless to say this creates a bunch of noise on the final signal due to RF being on the heatsink. We have been able to get about 3.0W out of it starting out ice cold, but after it heats up, it goes as low as 900mW. I replaced it with a NTE341 (MRF237 equiv), which has the emitter commen to the case and is designed to have the case soldered to the ground plane of the board for heatsinking. To make it fit it needs to be mounted backwards so i had to drill a hole for the base pin to go through an remove the green solder mask on the ground plane. I did not do any math on the circuits so my matching is probably not optimal, the only thing done was to change out the input and out put matching cap's with variable units that we had on hand. After this was done, I was able to get 2.30W out (@13.8V)of the exciter with no drop off due to heat, and 95% of all microphonics were eliminated! The output was checked after 1 hour and it was still at 2.28 watts output, so it looks like it was a success. I would think we could get more output if the matching networks were redone, but I did not feel like screwing with the coils for the backup repeater. I may do that in the future, and also try the real Motorola mrf237 in the circuit and see how it compairs to the NTE part. -- Bryan Fields, KB9MCI 22:58:17 up 15 min, 1 user, load average: 1.31, 0.93, 0.73 You will be surprised by a loud noise. 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] Single repeater antennas vs. dual-band repeater antennas...
At 1/29/2006 13:56, you wrote: On the sites with unused parts of these dual-band antennas, should the unused section of the antenna be terminated? With a short or 50 ohm termination? I would ALWAYS terminate with a 50 Ohm load, even it if is just a resister. Why? An unterminated antenna/feedline is simply a long conductor. Where's the nonlinearity? 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/
[Repeater-Builder] New system's in, but a few problems
Overall real performance isn't where I'd like it to be, I suspect the antenna is bad. We'll try changing it out later this week. We have some other more interesting symptoms, which I'd like to hear opinions on, but let me describe the system: Comet GP-9 dual band antenna. Can't change to a different type. When we took it apart back in december, it was wet inside. The antenna ends up being about 6' above my head, when I'm in this room on top of the building with the repeater. Hollow tile construction, so I suspect we are illuminated pretty well when we are transmitting. About 30' of FSJ1-50 feedline from the antenna to a comet band splitter, with HF port terminated. I could shorten it to maybe 25' but mechanically, that's what it takes. 2' of FSJ1-50 from the band splitter to Wacom four can BPBR set for UHF. 50W up the pipe on UHF 3' FSJ1-50 from the band splitter to the Wacom four can BPBR set for VHF. 18W up the pipe on VHF. I measured sensitivity using a 50dB tap inserted between the band splitter and the antenna, at the splitter common port. 50dB attenuation there, plus 20dB pad on my generator (for insurance) gave me the following values: Break squelch on VHF: -57dBm on generator Close squelch on VHF: -59dBm Break Squelch on UHF: -56dBm Close squelch on UHF: -61dBm That works out to -127dBm, -129dBm, -126dBm, and -131dBm respectively. The old system that I replaced had some desense, and needed the generator at -42dBm to hold solid with the same test configuration. So on VHF, I am measuring about 15dB better receive performance, but driving around, things seem not all that different. Of course the thing that's between the measurement point and the driving test is the antenna. Taking the VHF transmitter on and off, I don't see any desense on VHF. The UHF transmitter though, does desense the VHF rx some. It's a crystalled transmitter, with two helical filters internally before the final amplifier. VHF dosen't desense the UHF receiver. Looking at the VHF receiver port with a spectrum analyzer, I see some loud noises up at 160-170 MHz. My sinclabs filter knocks those out nicely, but gives no improvement in receive sensitivity. I also tried a preamp with it's own 5 section helical filter, that I'd measured at 16dB gain. This also gave no change in sensitivity with or without the sinclabs filter in front of it. I think this is telling me that I have a noise problem getting into the receiver, that is keeping me from seeing improvements made below that level. Also when tuning the VHF notch sliders on the receive side, I noticed that the first can (closest to the antenna) gave no real distinct improvement in white noise on a weak signal. The second can gave a very distinct improvement. Adjusting the notches on the TX side with transmitter on gave no real improvement. This seems to be telling me something about where my noise source is getting in. All connectors are wrench tight, all cables are new hardline, and have been swept. Given that I'm so close to the antenna, and I cannot change or move the antenna, other than to replace it with a visually identical antenna, what can I do to reduce the RF level in the room? The plumbing's as tight as I can make it, I think. I am also getting an audio squeal on the UHF side, which is not present when the controller is outputting, but is there on received audio. If I use the controller's record and playback function, then I can hear the squeal on my playback. I think most of this is caused by the UHF signal lighting up the whole room pretty well. I can try some better shielding on the audio and control signals.. I'm also thinking that if the antenna is bad, it might be radiating more straight down for some reason, than it normally would. 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] New system's in, but a few problems
About 8 years ago, I tried using a Comet GP-9 antenna combined to serve two repeaters, one on 2 meters the other on UHF. I found the GP-9 worked FAR better on 2 meters than on 445 MHz. I was running good GE Mastr Pro repeaters, good pass/reject duplexers, good ARR GaAsFET pre-amps, and had NO desence. The comet GP-9 simply is not very good for UHF. Of course, the water you foung in the antenna is not good either. -- Original Message -- Received: Mon, 30 Jan 2006 12:47:34 AM CST From: Dave VanHorn [EMAIL PROTECTED] SNIP Comet GP-9 dual band antenna. Can't change to a different type. When we took it apart back in december, it was wet inside. SNIP So on VHF, I am measuring about 15dB better receive performance, but driving around, things seem not all that different. Of course the thing that's between the measurement point and the driving test is the antenna. SNIP 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/
