[Repeater-Builder] Motorola part number?
Does anyone have a place where I can get a "real world" part number if I input a Motorola part number? I'm looking for the 3-pin Molex type connector that goes on the end of the power cabling for the SpectraTAC chassis Motorola Part #: 28-83176L01 (P101 - Plug, 3-pin, male) I need to fab up some power cables, and I don't want to have to go through four drawers (three receivers and one comparator) changing all the input and interconnect plugs. Thanks! Mark - N9WYS 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] Looking for MRF648's
At 2/23/2006 01:53 PM, you wrote: >Anyone have a surplus of Motorola MRF648 UHF power transistors that they'd >sell or trade? > > --- Jeff > >- Uhh ohh, don't tell me they're getting hard to find. 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: Best broadband VHF antenna
Yes, Burt, that's what I guess I was getting at -- the same style element and enclosed harness attachment. Chuck WB2EDV Burt Lang wrote: >The SRL235 series with its double dipoles side by side on each side of >the mast doesn't have any connection with the SRL210 series unless it is >in the way that the feedline is terminated at the element (the picture I >see in their catalogue looks like an internal termination like the 210 >dipole). I would not trust any antenna with the side by side dipoles to >give a good smooth pattern. Our experience with SRL210 and 310 antennas >has been excellant. > >The SRL222/224 lines appear to be a cheap version to compete with the dB >222/224 antennas. > >Burt VE2BMQ>>> > >Chuck Kelsey wrote: > > > >>Nope, the 235 is in the same family as the 210. The 210 family is a good >>line. >> >>The 222/224 does not have a boom that holds the element away from the >>mast. Instead, the element is attached right at the mounting mast and >>has some sort of funky hairpin type matching configuration. >> >>Chuck >>WB2EDV >> >> >> > > > > > > >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: Best broadband VHF antenna
The SRL235 series with its double dipoles side by side on each side of the mast doesn't have any connection with the SRL210 series unless it is in the way that the feedline is terminated at the element (the picture I see in their catalogue looks like an internal termination like the 210 dipole). I would not trust any antenna with the side by side dipoles to give a good smooth pattern. Our experience with SRL210 and 310 antennas has been excellant. The SRL222/224 lines appear to be a cheap version to compete with the dB 222/224 antennas. Burt VE2BMQ>>> Chuck Kelsey wrote: > Nope, the 235 is in the same family as the 210. The 210 family is a good > line. > > The 222/224 does not have a boom that holds the element away from the > mast. Instead, the element is attached right at the mounting mast and > has some sort of funky hairpin type matching configuration. > > Chuck > WB2EDV > 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] Micor 375 Watt TLD5082 question?
It would be interesting to have someone take some pictures and some careful measurements of the main PA plate line in the TLD5082 amp (which there seem to be many of), and then have Kevin take some pictures of his low-split TLD5081 amp, measuring the 5082's PA's dimensions against his 5081's PA pieces for comparison. I've never actually had a 1/4 KW VHF MICOR to see just how the "plumbing" in the PA deck is done, and to see if it is something that could actually be modified or even manufactured from scratch to be functional in the 2-Meter range. Unfortunately, the service manual doesn't have any detailed pictures of the high and low-split amps for comparison or to show just how they're constructed. Years ago, I contacted some of the dealers in Canada that used to have a lot of 136-150 MHz MICOR gear, but never found anyone who actually had one of the stations with the low-split 1/4 KW VHF Amp. LJ -Original Message- >From: John Sichert <[EMAIL PROTECTED]> >Sent: Feb 23, 2006 3:54 PM >To: Repeater-Builder@yahoogroups.com >Subject: Re: [Repeater-Builder] Micor 375 Watt TLD5082 question? > >TLD5081 = Gold >8560s (D02) = Silver >1/4 KW Micor on 2 = Priceless > > > >At 06:36 PM 2/23/06, you wrote: >>I have a TLD5081 amp that is not currently in service. Unfortunately, it is >>not for sale, but I could take some digital photos of the internals and get >>them to you. Just let me know what areas you would be interested in. It >>is currently at a remote site, so it may take a few days to get them to you. >>Let me know if are interested, and 73. >> >>Kevin, K9HX >> >> >> >> >> >> >> >>Yahoo! Groups Links >> >> >> >> > > > > > > > >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] Micor 375 Watt TLD5082 question?
TLD5081 = Gold 8560s (D02) = Silver 1/4 KW Micor on 2 = Priceless At 06:36 PM 2/23/06, you wrote: >I have a TLD5081 amp that is not currently in service. Unfortunately, it is >not for sale, but I could take some digital photos of the internals and get >them to you. Just let me know what areas you would be interested in. It >is currently at a remote site, so it may take a few days to get them to you. >Let me know if are interested, and 73. > >Kevin, K9HX > > > > > > > >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] Micor 375 Watt TLD5082 question?
I have a TLD5081 amp that is not currently in service. Unfortunately, it is not for sale, but I could take some digital photos of the internals and get them to you. Just let me know what areas you would be interested in. It is currently at a remote site, so it may take a few days to get them to you. Let me know if are interested, and 73. Kevin, K9HX 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] Looking for MRF648's
Anyone have a surplus of Motorola MRF648 UHF power transistors that they'd sell or trade? --- Jeff -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 268.0.0/267 - Release Date: 2/22/2006 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] Programming Midland 70-265B
Mark - The 70-1052A is the correct interface for the 70-265B. E-mail me off list and I'll try to help you troubleshoot the problem. I'm guessing a computer that is too fast. Andy -- NC Certified Firefighter III / Instructor II / EMT-A FCC Licensed Technician / Amateur Call NC4AB / Echolink Node 5761 http://www.brinkleyelectronics.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] Micor 375 Watt TLD5082 question?
Joe and the group, I have a ham band exciter and a good 10 watts out of the driver PA, I just can't get more than 160 watts out of the final. My dip in the plate current is not so great and when I bring up the screen voltage the plate current flattens out and no more power is made. I got a little more out from the initial tune up by adjusting the antenna coupling but still 160 watts was the max... I do know that 400 watts is excessive but I was tuning for max power but still staying under my plate current limit. I brought the screen voltage back down when on the commercial frequency and left it at 350 watts or so for quite a while. The power stayed rock solid and the PA looked clean on the analyzer. Just wish it would go down a bit further without mods. Oh well I guess I will pull the plate line and see what can be done... Bryon K0BSJ At 12:13 PM 2/23/2006, you wrote: >Byron, I have successfully moved a 375 watt station down to the 147 >region. Check that >your exciter is putting out the required drive pwr in the ham band. It >was a long time ago >but I think I converted the exciter into the lower band by just >replacing the components indicated >in the parts list. (the parts list shows frequency sensitive >components). I don't believe >any conversion was necessary for the AMP but the conversion was done >about 20 years ago. >By the way, that's excessive power. We run ours well below half power by >turning the screen >control down. >Good luck. Joe > > >Bryon Jeffers K0BSJ wrote: > > >I have a Micor 375 Watt station that has the TLD5082 high power PA. I have > >a fresh set of tubes in the station and on a commercial frequency (156.???) > >it makes good power, about 400 watts or so.. I have tried to get it to tune > >up on a 147.??? ham frequency but to no avail. I have heard of these going > >down with no problem but this one just won't do it. I of course checked MOL > >to see if the needed parts were available to convert it to the ham band > >(TLD5081) but they are NLA... > > > >Has anyone converted one of these to the ham band and if so what parts did > >you change? > > > >According to the manual the grid tuning cap and some other assorted coils > >are needed, but I would like to hear from someone that has made one of > >these work in the ham band... > > > >Thanks for your time! > > > >Bryon K0BSJ > > > > > > > > > > > > > > > >Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > >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: Best broadband VHF antenna
Nope, the 235 is in the same family as the 210. The 210 family is a good line. The 222/224 does not have a boom that holds the element away from the mast. Instead, the element is attached right at the mounting mast and has some sort of funky hairpin type matching configuration. Chuck WB2EDV skipp025 wrote: >Which are the same family as the 235's I have. Jeff... >I've done all the feed point and phase testing you >mentioned. No cigar... the dipoles are in phase, >the harness is right and the antennas are still poop. > >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: Best broadband VHF antenna
Which are the same family as the 235's I have. Jeff... I've done all the feed point and phase testing you mentioned. No cigar... the dipoles are in phase, the harness is right and the antennas are still poop. skipp > Chuck Kelsey <[EMAIL PROTECTED]> wrote: > I've always heard and seen good performance from Sinclair, except for > the SRL-222 and SRL-224. Those two were problematic. > Chuck > WB2EDV > > 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] Micor 375 Watt TLD5082 question?
Byron, I have successfully moved a 375 watt station down to the 147 region. Check that your exciter is putting out the required drive pwr in the ham band. It was a long time ago but I think I converted the exciter into the lower band by just replacing the components indicated in the parts list. (the parts list shows frequency sensitive components). I don't believe any conversion was necessary for the AMP but the conversion was done about 20 years ago. By the way, that's excessive power. We run ours well below half power by turning the screen control down. Good luck. Joe Bryon Jeffers K0BSJ wrote: >I have a Micor 375 Watt station that has the TLD5082 high power PA. I have >a fresh set of tubes in the station and on a commercial frequency (156.???) >it makes good power, about 400 watts or so.. I have tried to get it to tune >up on a 147.??? ham frequency but to no avail. I have heard of these going >down with no problem but this one just won't do it. I of course checked MOL >to see if the needed parts were available to convert it to the ham band >(TLD5081) but they are NLA... > >Has anyone converted one of these to the ham band and if so what parts did >you change? > >According to the manual the grid tuning cap and some other assorted coils >are needed, but I would like to hear from someone that has made one of >these work in the ham band... > >Thanks for your time! > >Bryon K0BSJ > > > > > > > >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] Micor 375 Watt TLD5082 question?
I do have a 250/375-Watt MICOR VHF Base Station/Repeater service manual, but the 2-Meter range PA parts are no longer available from Motorola. They were ridiculously expensive when they were available ($900+ for just the replacement plate line, and Motorola only had one in stock back in the early 1990's). That's why I just went with the rebuilding of several 100-watt PA decks from 160 MHz down to the 2-Meter range. Those were a lot of work and cost about $150 in parts (50+ parts to change out), but lots less than the 375-Watt PA would have cost to rebuild. LJ -Original Message- >From: H Hugh Flint <[EMAIL PROTECTED]> >Sent: Feb 22, 2006 10:05 PM >To: Repeater-Builder@yahoogroups.com >Subject: Re: [Repeater-Builder] Micor 375 Watt TLD5082 question? > >Bryon, > >I have benn contemplating the conversion on one of the units I have, but >am still trying >to run down a manual on the beast. So if you know where I might find a >copy of the manual >I would get started, Hi.. > >73, > >Hugh, KF7LN > >Bryon Jeffers K0BSJ wrote: > >>I have a Micor 375 Watt station that has the TLD5082 high power PA. I have >>a fresh set of tubes in the station and on a commercial frequency (156.???) >>it makes good power, about 400 watts or so.. I have tried to get it to tune >>up on a 147.??? ham frequency but to no avail. I have heard of these going >>down with no problem but this one just won't do it. I of course checked MOL >>to see if the needed parts were available to convert it to the ham band >>(TLD5081) but they are NLA... >> >>Has anyone converted one of these to the ham band and if so what parts did >>you change? >> >>According to the manual the grid tuning cap and some other assorted coils >>are needed, but I would like to hear from someone that has made one of >>these work in the ham band... >> >>Thanks for your time! >> >>Bryon K0BSJ >> >> >> >> >> >> >> >>Yahoo! Groups Links >> >> >> >> >> >> >> >> >> >> >> > > >-- >No virus found in this outgoing message. >Checked by AVG Free Edition. >Version: 7.1.375 / Virus Database: 268.0.0/267 - Release Date: 2/22/2006 > > > > > > > > >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/
Re: [Repeater-Builder] Re: FS: VHF 4 Bay Sinclair Antenna Arrays
skipp025 wrote: > Hi Ken, > > In the real world, not really. > > There would be serious signal coupling from one antenna > to the other. If there was enough frequency and physical > distance to provide a min isolation you might get away > with it if your connected equipment/system was good enough. > > I was trying to think of an application for a same band > dual feed antenna... The first thing that comes to mind > is multiple repeater site combined transmitters spread > over two or more antennas to get around some of the more > brutal multi hybrid combiner system loses. A 5-ch UHF trunked system we maintain was originally setup that way, with rx on the top half and tx on the botttom half. LOTS of IM problems, desense, etc. Course the fact that the tx/rx separation was a harmonic of the spacing between channels didn't help. 8.8Mhz t/r and 800Khz between channels...=cP We replaced the antennas with a pair of Scala OGB-5's, rx on top and tx abt 15' down and 3-4' out from the tower (that's roof level actually). MUCH improved. -- Jim Barbour WD8CHL 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: Best broadband VHF antenna
I've always heard and seen good performance from Sinclair, except for the SRL-222 and SRL-224. Those two were problematic. Chuck WB2EDV Jeff DePolo WN3A wrote: >>I would agree the Sinclair Antennas are well built and >>very broadband, but I had a horible time with a number >>of 4 bay vhf broadband units installed (and removed) >>in 2005. We bought a large number of VHF SLR-235 >>units new. The part number has changed but the antenna >>is the same current 4 dipole current model. >> >>The performance stank, with wild patterns and imd >>generation from all the brand new antennas we bought >>and installed at different locations. What a let down >>vs the good performance of other Sinclair antennas we've >>purchased in the past. >> >> > >Geez Skipp, that's pretty unusual. I've never had anything but good luck >with Sinclair's dipole arrays, both on highband and UHF. I'm not a big fan >of their whitesticks though. As I'm sure you know, most of their antennas >are available in "low PIM" versions, though I've never had any IM problems >with even their older, standard models. > > > >>I figured it might be something we did, so I had a number >>of people check everything at least twice over. Yes >>we checked the harness phasing, element spacing yadda, >>yadda. But the same problem with 6 brand new antennas >>at 3 different locations? >> >> > >The only thing that comes to mind is maybe a "quality control" issue at the >factory that resulted in one or more of the dipoles being assembled >upside-down resulting in severe cancellation. I know they usually mark one >side of each element with a band of red tape to ensure they are properly >phased, but somebody could have screwed this process up (or maybe they >marked them after assembly instead of before). If you have nothing else to >do (hi), maybe you could do some tests to ascertain whether or not this is >the case, perhaps by transmitting a few hundred mW into the input and using >a scope to look at the relative phase between elements (i.e. check to see >that the upper side of the feedpoint is in-phase between each of the >elements). > > --- 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] Re: Best broadband VHF antenna
> I would agree the Sinclair Antennas are well built and > very broadband, but I had a horible time with a number > of 4 bay vhf broadband units installed (and removed) > in 2005. We bought a large number of VHF SLR-235 > units new. The part number has changed but the antenna > is the same current 4 dipole current model. > > The performance stank, with wild patterns and imd > generation from all the brand new antennas we bought > and installed at different locations. What a let down > vs the good performance of other Sinclair antennas we've > purchased in the past. Geez Skipp, that's pretty unusual. I've never had anything but good luck with Sinclair's dipole arrays, both on highband and UHF. I'm not a big fan of their whitesticks though. As I'm sure you know, most of their antennas are available in "low PIM" versions, though I've never had any IM problems with even their older, standard models. > I figured it might be something we did, so I had a number > of people check everything at least twice over. Yes > we checked the harness phasing, element spacing yadda, > yadda. But the same problem with 6 brand new antennas > at 3 different locations? The only thing that comes to mind is maybe a "quality control" issue at the factory that resulted in one or more of the dipoles being assembled upside-down resulting in severe cancellation. I know they usually mark one side of each element with a band of red tape to ensure they are properly phased, but somebody could have screwed this process up (or maybe they marked them after assembly instead of before). If you have nothing else to do (hi), maybe you could do some tests to ascertain whether or not this is the case, perhaps by transmitting a few hundred mW into the input and using a scope to look at the relative phase between elements (i.e. check to see that the upper side of the feedpoint is in-phase between each of the elements). --- Jeff -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 268.0.0/267 - Release Date: 2/22/2006 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/
[Repeater-Builder] Re: FS: VHF 4 Bay Sinclair Antenna Arrays
Hi Ken, In the real world, not really. There would be serious signal coupling from one antenna to the other. If there was enough frequency and physical distance to provide a min isolation you might get away with it if your connected equipment/system was good enough. I was trying to think of an application for a same band dual feed antenna... The first thing that comes to mind is multiple repeater site combined transmitters spread over two or more antennas to get around some of the more brutal multi hybrid combiner system loses. cheers, skipp > [EMAIL PROTECTED] wrote: > > Just curious.. I've only researched the 4bay DB antennas > with one feedline connection. With the 2 leads, could you > possibly use one lead for Tx and one for Rx in a repeater > setup? > > Thanks, > Ken > [EMAIL 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/
[Repeater-Builder] Re: Best broadband VHF antenna
I would agree the Sinclair Antennas are well built and very broadband, but I had a horible time with a number of 4 bay vhf broadband units installed (and removed) in 2005. We bought a large number of VHF SLR-235 units new. The part number has changed but the antenna is the same current 4 dipole current model. The performance stank, with wild patterns and imd generation from all the brand new antennas we bought and installed at different locations. What a let down vs the good performance of other Sinclair antennas we've purchased in the past. I figured it might be something we did, so I had a number of people check everything at least twice over. Yes we checked the harness phasing, element spacing yadda, yadda. But the same problem with 6 brand new antennas at 3 different locations? Anyway, the problem was never resolved... I contacted Sinclair Engineering to address the issue and never received a reply other than two or three quick emails to say they'd get back to me... which was last year. IWCE is the same week as Dayton... so my friends at Sinclair Engineering will hear more than a casual word when I see them in person about this. I'm sure the reason I never heard from them is probably just someone dropping the ball... but I buy a heck of a lot of big antennas... There was just a post here on the group about selling some of the dual 2 bay (pretty much the same model) Sinclair Broadband antennas. I would have jumped on that deal if I didn't have $12K plus worth of junk 4 bay antennas in storage. Friends of mine working for the State Goverment Radio Service tell me they have the same horible performance issues with their 4 Dipole Sinclair VHF broadband antennas. We replaced the Sinclair Broad band antennas with Andrews Decibel units and never looked back (yet). I'm sure your results will probably vary. cheers, skipp > "Jeff DePolo WN3A" <[EMAIL PROTECTED]> wrote: > Sinclair wideband dipole arrays are probably our best > bet (SD214-HL as an example). They cover 138-174 MHz, > available with either 1/4 wave or 1/2 wave spacing > from element to mast (go with half-wave if you want > to get close to omni, quarter-wave for a more unidirectional > pattern). Built like a tank. Telewave also has broadband > dipole arrays, but personally I like Sinclair's > construction better. > > > Have a question for the list. Is there an antenna (VHF) that > > will cover a 30mhz bandwith? (Reasonably) > > > > There is a system in Georgia incompassing the entire state > > using various tall towers. On the towers will be antennas > > that will be used for VHF Repeaters and VHF digital. (in the > > ham band) T > > > > he NWS is hoping to use the same antennas on a "Mesonet". > > (like this one http://www.mesonet.ou.edu/) They are looking > > at the government freq.s right now but thinks there may be > > something in the 175mhz band. > 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] Best broadband VHF antenna
Sinclair 210C4 speced at 138-174<1.5:1 They are the standard antenna used in multicoupled systems here in Canada. I have seen one with as many as 28 frequencies coupled into it. Burt VE2BMQ>> [EMAIL PROTECTED] wrote: > > Have a question for the list. Is there an antenna (VHF) that will cover a > 30mhz bandwith? (Reasonably) > > There is a system in Georgia incompassing the entire state using various tall > towers. On the towers will be antennas that will be used for VHF Repeaters > and VHF digital. (in the ham band) T > > he NWS is hoping to use the same antennas on a "Mesonet". (like this one > http://www.mesonet.ou.edu/) They are looking at the government freq.s right > now but thinks there may be something in the 175mhz band. > > > Will this work? I suggested the db224, but I see it's bandwith is only > 10mhz. I do realize these will work out of band pretty well (using a db224 > for a remote base antenna and a db420 on a repeater now)...but just wasn't > sure if there was a better choice. > > Thanks, > Robert Burton > DEC NWS in Peachtree City,GA > www.georgiaskywarn.com > > > > > > > > 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] Best broadband VHF antenna
> Have a question for the list. Is there an antenna (VHF) that > will cover a 30mhz bandwith? (Reasonably) > > There is a system in Georgia incompassing the entire state > using various tall towers. On the towers will be antennas > that will be used for VHF Repeaters and VHF digital. (in the > ham band) T > > he NWS is hoping to use the same antennas on a "Mesonet". > (like this one http://www.mesonet.ou.edu/) They are looking > at the government freq.s right now but thinks there may be > something in the 175mhz band. Sinclair wideband dipole arrays are probably our best bet (SD214-HL as an example). They cover 138-174 MHz, available with either 1/4 wave or 1/2 wave spacing from element to mast (go with half-wave if you want to get close to omni, quarter-wave for a more unidirectional pattern). Built like a tank. Telewave also has broadband dipole arrays, but personally I like Sinclair's construction better. --- Jeff -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 268.0.0/267 - Release Date: 2/22/2006 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] FS: VHF 4 Bay Sinclair Antenna Arrays
Just curious.. I've only researched the 4bay DB antennas with one feedline connection. With the 2 leads, could you possibly use one lead for Tx and one for Rx in a repeater setup? Thanks, Ken [EMAIL PROTECTED] 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] Programing Midland 70-265B
Hello, I have 4 Midland 70-265B handheld,that I would like to set up for a local grms repeater. I have tried to use the Midland 70-1052A programing system and software, with no luck at all. Any tips would be very welcome. The software is writen in DOS and I was using a computer that was set up to handle DOS programs only. Thank You Mark (N8TSK) [EMAIL 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/
Re: [Repeater-Builder] Micor 375 Watt TLD5082 question?
Bryon, I have benn contemplating the conversion on one of the units I have, but am still trying to run down a manual on the beast. So if you know where I might find a copy of the manual I would get started, Hi.. 73, Hugh, KF7LN Bryon Jeffers K0BSJ wrote: >I have a Micor 375 Watt station that has the TLD5082 high power PA. I have >a fresh set of tubes in the station and on a commercial frequency (156.???) >it makes good power, about 400 watts or so.. I have tried to get it to tune >up on a 147.??? ham frequency but to no avail. I have heard of these going >down with no problem but this one just won't do it. I of course checked MOL >to see if the needed parts were available to convert it to the ham band >(TLD5081) but they are NLA... > >Has anyone converted one of these to the ham band and if so what parts did >you change? > >According to the manual the grid tuning cap and some other assorted coils >are needed, but I would like to hear from someone that has made one of >these work in the ham band... > >Thanks for your time! > >Bryon K0BSJ > > > > > > > >Yahoo! Groups Links > > > > > > > > > > > -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 268.0.0/267 - Release Date: 2/22/2006 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/
[Repeater-Builder] Elavator Rooms
Hi I live in the UK and was for over 20 years a service engineer with Pye Telecom. We had a lot of commercial users base radio gear on top of high rise blocks of flats, typicly 23 floors, about 230 feet high. The radios were usualy located in an anti room by the lift motor room, and were mounted in 6 foot 19 inch racks The radios were contolled over leased private telephone lines. On one block of flates, St Georges Heights, due to vandalism we had a fibre glass hut put on the actual roof and moved the radios into that. It was great fun watching a 240 foot crane lower the hut onto the roof. I remember one night getting a call from the caretaker saying the hut had been broken into. I arrived to find that some kind person had dropped a TX unit weighing around 30 pounds off the roof, 235 feet straight down, needless to say it was not repairable. Oh they were the days :-) 73 Steve 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] Best broadband VHF antenna
Have a question for the list. Is there an antenna (VHF) that will cover a 30mhz bandwith? (Reasonably) There is a system in Georgia incompassing the entire state using various tall towers. On the towers will be antennas that will be used for VHF Repeaters and VHF digital. (in the ham band) T he NWS is hoping to use the same antennas on a "Mesonet". (like this one http://www.mesonet.ou.edu/) They are looking at the government freq.s right now but thinks there may be something in the 175mhz band. Will this work? I suggested the db224, but I see it's bandwith is only 10mhz. I do realize these will work out of band pretty well (using a db224 for a remote base antenna and a db420 on a repeater now)...but just wasn't sure if there was a better choice. Thanks, Robert Burton DEC NWS in Peachtree City,GA www.georgiaskywarn.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] Co-Locating in an Elevator Room
Maire-Radios <[EMAIL PROTECTED]> wrote: > Well my good man They are right. We can not even put a phone dialer in > an elevator room even when it does service the elevator the room is for. We > have had to move fire alarm panels and access control panels out of elevator > rooms. Now if you can build a wall to have your equipment in a little room > by it self even if you have to go through the elevator room that will meet > code. (and the wall's I seen have not even been fire rated) Or the other > is to get an outdoor box and just move the repeater to the outside. Been > there and have had to do that also over the years. This has been going on > since about 1981 when we put our first unit in an elevator room and when the > state inspector came out it had to be moved. > > > - Original Message - > From: "Justin W. Pauler" <[EMAIL PROTECTED]> > To: ; <[EMAIL PROTECTED]> > Sent: Wednesday, February 22, 2006 4:39 PM > Subject: [Repeater-Builder] Co-Locating in an Elevator Room > > > > Hello Everyone... > > > > I got some news today regarding my repeater and I'm a little > > concerned... I think I'm getting the shaft on this deal. > > > > I signed a lease with a building to place an antenna on the roof and a > > repeater and cabinet inside of the elevator room for a said amount of > > money. About 6 months ago I completed the install and everything has > > been kosher since. > > > > Today I got a call from the Security manager asking me to meet up with > > him and the elevator maintenance man regarding a problem with my > > equipment. This meeting was very simple, I was asked to remove my > > equipment from the elevator room, not because it is causing problems, > > but because it has the potential to cause problems. > > > > I was told the following things: > > > > 440 Mhz is "too high" of a frequency to be in an elevator room > > > > NFPA and the "elevator code" says that nothing can be stored inside > > of an elevator room other than equipment directly relating to the > > operation > > of the elevator system > > > > Even if the unit is "just receiving", it is still building up > > "frequency" on the walls > > of the room that will cause "bad things" to happen "eventually". > > > > While normally I would tell this fine maintenance man which door he > > could use on his way out, he is pulling rank and telling me that if > > the unit stays in the room longer than 1 month, his company will no > > longer be able to honor it's service contract with the building. > > So Sounds like I'm up a creek > > > > The fact still remains though, I've never heard of NFPA specifying > > anything about elevator rooms and I've never heard of an "elevator > > code" (but that's not saying it isn't out there). I've also been in > > plenty of other elevator rooms in which radio frequency equipment was > > housed and transmitting sometimes in excess of 10 times my power with > > no issues... Why is this becoming an issue with me? > > > > Any suggestions? Anyone know of a good "waterproof" cabinet that can > > go outside? Is that a good idea? Help. > > > > Justin > > > > -- > > Justin W. Pauler > > Baton Rouge, LA > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > 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] Co-Locating in an Elevator Room
I had a UHF repeater in the top of an elevator shaft at a university. I ended up pulling it out due to concerns about fire code violations. It took me a while to get all the carbon dust crap off it. Joe Maire-Radios <[EMAIL PROTECTED]> wrote: > Well my good man They are right. We can not even put a phone dialer in > an elevator room even when it does service the elevator the room is for. We > have had to move fire alarm panels and access control panels out of elevator > rooms. Now if you can build a wall to have your equipment in a little room > by it self even if you have to go through the elevator room that will meet > code. (and the wall's I seen have not even been fire rated) Or the other > is to get an outdoor box and just move the repeater to the outside. Been > there and have had to do that also over the years. This has been going on > since about 1981 when we put our first unit in an elevator room and when the > state inspector came out it had to be moved. > > > - Original Message - > From: "Justin W. Pauler" <[EMAIL PROTECTED]> > To: ; <[EMAIL PROTECTED]> > Sent: Wednesday, February 22, 2006 4:39 PM > Subject: [Repeater-Builder] Co-Locating in an Elevator Room > > > > Hello Everyone... > > > > I got some news today regarding my repeater and I'm a little > > concerned... I think I'm getting the shaft on this deal. > > > > I signed a lease with a building to place an antenna on the roof and a > > repeater and cabinet inside of the elevator room for a said amount of > > money. About 6 months ago I completed the install and everything has > > been kosher since. > > > > Today I got a call from the Security manager asking me to meet up with > > him and the elevator maintenance man regarding a problem with my > > equipment. This meeting was very simple, I was asked to remove my > > equipment from the elevator room, not because it is causing problems, > > but because it has the potential to cause problems. > > > > I was told the following things: > > > > 440 Mhz is "too high" of a frequency to be in an elevator room > > > > NFPA and the "elevator code" says that nothing can be stored inside > > of an elevator room other than equipment directly relating to the > > operation > > of the elevator system > > > > Even if the unit is "just receiving", it is still building up > > "frequency" on the walls > > of the room that will cause "bad things" to happen "eventually". > > > > While normally I would tell this fine maintenance man which door he > > could use on his way out, he is pulling rank and telling me that if > > the unit stays in the room longer than 1 month, his company will no > > longer be able to honor it's service contract with the building. > > So Sounds like I'm up a creek > > > > The fact still remains though, I've never heard of NFPA specifying > > anything about elevator rooms and I've never heard of an "elevator > > code" (but that's not saying it isn't out there). I've also been in > > plenty of other elevator rooms in which radio frequency equipment was > > housed and transmitting sometimes in excess of 10 times my power with > > no issues... Why is this becoming an issue with me? > > > > Any suggestions? Anyone know of a good "waterproof" cabinet that can > > go outside? Is that a good idea? Help. > > > > Justin > > > > -- > > Justin W. Pauler > > Baton Rouge, LA > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > 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] SS-64 on MASTR II
In response to Andy's post, This is perfect timing from the ss-64 post. I have a mastr II that I want to hook up a tone decoder to. I have a encoder board already and would like to hook in a separate decode board I dug up. Does anybody have the connection points to hook into? By, the way it is a Mastr II Station repeater. Thanks for the help. Andy KC2GOW The SS-64 wants to be connected to 12 VDC (RED and BLK wires) and the audio out YEL (Yellow) wire wants to connect to the CG HI input on the exciter. Pin 2 on the exciter board. If you want the CTCSS tone to run all the time when the transmitter is keyed, then nothing more needs to be done, except set the tone level, either at small pot on the SS-4, or at the exciter pot for CTCSS. Level should be about .4 kHz (400 Hz). If you want to CTCSS tone to drop off when the repeater receiver or link drops off, then you must de-solder JP-1 on the back of the SS- 64, and hook up the ORG (Orange) wire to an "Active Low" source, from your receiver, either the COS, or the CTCSS Decode line. If the keying line does not go "Active Low" but goes "Active High," then you need to build a simple transistor inverter circuit to take the "Active High" and convert it to an "Active Low" as the SS-64 wants a pull to ground to activate the CTCSS tone (and take a way the ground to make it go away when you stop receiving on the receiver or link). If you want to key the CTCSS tone with more than one receiver, you need to use steering diodes in this ORG keying line. This set up is especially nice for IRLP links, where you don't want to tie up another link radio, but simply use the repeater as the link. It has worked very well for me in several installations. As for the CTCSS decoder board, I usually pick off discriminator audio at the high-side of the squelch pot, the GRN (Green) wire on a TS-64DS. You can make the TS-64DS CTCSS Detect WHT (White) wire go either "Active High" by doing nothing further, or "Active Low" by putting a solder bridge across JP-7. Remember to be sure to ground the "Hang-up/busy" VIO (Violet color) wire, or the decode function will not work. You can also use the TS-64 to encode the same tone as it decodes. Simply hook up the YEL (Yellow) wire to the CG HI input of the exciter. Good luck. Shorty, K6JSI 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/
