RE: [Repeater-Builder] Anyone ever used this repeater controller?
Larry: I use an NHRC MVP controller on my 440 repeater. It has been in service for years without any problems 73 Gregg Ps Renee say hi -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com]on Behalf Of larryjspamme...@teleport.com Sent: Friday, March 27, 2009 10:36 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Anyone ever used this repeater controller? Bob, I've been considering getting one of the NHRC controllers for a GE MVP. Are they dependable, or like your email mentions, having some occasional failures? -Original Message- From: n...@no6b.com Sent: Mar 26, 2009 10:59 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Anyone ever used this repeater controller? At 3/26/2009 20:21, you wrote: http://www2.plus10.com/rc-99.html http://www2.plus10.com/rc-99.html http://www2.plus10.com/rc-99.html http://www2.plus10.com/rc-99.html No, but I do believe it will fit in the multi-freq area of an MVP. Will have to give one a try if the NHRC-micro gives out again. Thanks for the info. Plus 10 has an interesting business profile: wood sheds, horse barns repeater controllers. Bob NO6B
[Repeater-Builder] VXR 7000 Receiver Fine Tuning.
I don't have much experience with repeaters and tuning of the same but I would like to know how to tune mine to a fine reception, I do know a bit (not an expert) in how to work around the program CE27 but I don't have a clue in how to get a fine tune to the receiver, If anybody could help me with this, I will really appreciate it. Thanks Eli.
[Repeater-Builder] Re: Need information on a UHF repeater antenna made by Motorola
Extend the radials not less than 1/4 wave from the mast stub to the tip. And bend them down at about a 30 degree angle. Lone ger radials probably wouldn't hurt (in 1/4 wave increments) but provides more wind load and aesthectic challenges. $ equally space might be slightly better than3 but i doubt you would notice the difference. Doug N3DAB --- In Repeater-Builder@yahoogroups.com, gebhardstephen stevegebh...@... wrote: I am pretty sure HD has aluminum strips that will work just fine. Should I make the radials 1/4 wave , or longer? --- In Repeater-Builder@yahoogroups.com, n3dab rb_n3dab@ wrote: Forgot to mention if you can't find alum. for the ground plane elements at the local surpus yard or hardware store (HD or Lowes) see if you can find the city or county sign shop (the people who maintain the stop, yield and directional signs) as the may have pulls or damaged signs you can talk them out of. These are fairly heavy gage but usually soft alum. alloy and can be easily cut into strips with a carbide tipped blade on a small table saw with out any damage to the saw. Just make sure you put the alum. side against the metal mast stub as the sign side is a decal and you may not get the bonding you want for the radials. Doug N3DAB --- In Repeater-Builder@yahoogroups.com, gebhardstephen stevegebhard@ wrote: Good point, much easier to use a couple of clamps, and I just happen to have some stainless steel clamps here in the garage! Thanks for the advice. --- In Repeater-Builder@yahoogroups.com, n3dab rb_n3dab@ wrote: Do your self a big favor and don't drill any holes. Use 1 or 2 large stainless steel hose clamps, slip 3 or 4 aluminum radials up between the clamp and metal antenna base (similar to what you see in the picture for the TDD-6082). That is the way the Motorola and Station Master base station radials are atached. Extend the aluminum radial metal about 1 above the top clamp, tighten the clamps and then fold the 1 projection over to cover the SS clamp band. That way if the clamp loosens up a bit the radials wont fall off. Doug N3DAB --- In Repeater-Builder@yahoogroups.com, gebhardstephen stevegebhard@ wrote: Yes, that sounds like the antenna I have exactly, must be it. Looks like the general concensuss is to keep this one in service and not even bother trying the Diamond antenna. I don't have the radials though, but with this antenna I could even drill some holes in the collar that screws over the N connector and install radials that way. I bet that will help with the radiation pattern a bit. Thanks for all the assitance, as always, this is an awesome group. 73;s --- In Repeater-Builder@yahoogroups.com, Gerald Pelnar wd0fyf@ wrote: You described mine like you were looking at it. - Original Message - From: wb6dgn tallinson2@ To: Repeater-Builder@yahoogroups.com Sent: Friday, March 27, 2009 9:16 PM Subject: [Repeater-Builder] Re: Need information on a UHF repeater antenna made by Motorola Hi Gerald and the group, I think I've got one of these antennas too. It has a white fiberglass radome, just under 7 feet long and about an inch in diameter at the base, coupled to an aluminum bottom section about a foot long and 1-5/16 inch diameter. A protective sleeve of the aluminum unscrews to expose an N female connector. The logo is a black rectangle with a white ellipse centered over it. There was probably a name written in that ellipse but it's no longer readable now. There is a serial number tag on the aluminum base but some of the numbers are no longer readable due to a clamp damaging the tag. It also has the radial assembly just as you describe. I see no other markings or frequency range marked on it but, if it was pulled from the system I think it was, most of the channels were in the 453/458 range with one or two in the 467 range. I suspect it'll work just fine on the ham band. The mounting clamps are missing but they should be pretty easy to scrounge; if anyone has spares, let me know. Where is the frequency range marked on the antenna? If I know where to look, I'll try to clean a little of the dirt or oxidation to see if I can find it. Looks like a nice antenna. There's an RFS version in the Tessco catalog that suggests that they might be the OEM parent of this antenna. Tom DGN --- In Repeater-Builder@yahoogroups.com, Gerald Pelnar wd0fyf@ wrote:
[Repeater-Builder] Vertical Antenna
Hello All: Hope some one can help me. I am cleaning out the grauge of a silenet key and come accross a vertical antenna. I could find NO name or manual for this antenna. All I can find are 4 trapes 7 to 28 mhz. a label on the traps state Daiyamond. Any ideas. Thanks in advance Ray Rosler VE5RAE E-mail message checked by Spyware Doctor (6.0.0.386) Database version: 5.12060 http://www.pctools.com/en/spyware-doctor-antivirus/
[Repeater-Builder] FW: of interest...
Sent to me by an acquaintance... I merely repost it in case someone in CA or elsewhere near the left coast might be looking for a clean MICOR VHF repeater. Be aware -- it is an SP model, and is currently on 169/172 MHz. Disclaimer: I have no pecuniary interest in this auction. Item number: 160324066290 Mark - N9WYS
Re: [Repeater-Builder] Vertical Antenna
Is it brand name : Diamond from Japan ? Model : CP-5 ? 73s! de VR2XVD /W.L.Ho On 3/28/09, Ray Rosler ro...@sasktel.net wrote: Hello All: Hope some one can help me. I am cleaning out the grauge of a silenet key and come accross a vertical antenna. I could find NO name or manual for this antenna. All I can find are 4 trapes 7 to 28 mhz. a label on the traps state Daiyamond. Any ideas. Thanks in advance Ray Rosler VE5RAE * E-mail message checked by Spyware Doctor (6.0.0.386) Database version: 5.12060 http://www.pctools.com/spyware-doctor-antivirus/http://www.pctools.com/en/spyware-doctor-antivirus/ * -- HKARA website : http://www.hkara.org.hk VR2XVD email : vr2...@yahoo.com,vr2...@gmail.com Please consider the environment before printing the email.
Re: [Repeater-Builder] Vertical Antenna
Hi all is the CP-5 still on sale ??today from diamond 73/s gervais ve2ckn From: vr2 xvd Sent: Saturday, March 28, 2009 10:56 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Vertical Antenna Is it brand name : Diamond from Japan ? Model : CP-5 ? 73s! de VR2XVD /W.L.Ho On 3/28/09, Ray Rosler ro...@sasktel.net wrote: Hello All: Hope some one can help me. I am cleaning out the grauge of a silenet key and come accross a vertical antenna. I could find NO name or manual for this antenna. All I can find are 4 trapes 7 to 28 mhz. a label on the traps state Daiyamond. Any ideas. Thanks in advance Ray Rosler VE5RAE E-mail message checked by Spyware Doctor (6.0.0.386) Database version: 5.12060 http://www.pctools.com/spyware-doctor-antivirus/ -- HKARA website : http://www.hkara.org.hk VR2XVD email : vr2...@yahoo.com,vr2...@gmail.com Please consider the environment before printing the email.
RE: [Repeater-Builder] What is this antenna???
If the elements are flat (not tubing), then it's a DB410. They stopped making them probably in the early 80's? --- Jeff -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of k5in Sent: Friday, March 27, 2009 9:39 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] What is this antenna??? Hi, Ok, I thought I have a db413 but I cannot count: Antenna is on a 12ft mast, 6 dipoles mounted vertically one above the other. No labels, 1.1 to 1 VSWR at 445.00mhz. Antenna is factory made with a top on it that looks like a DB Products. Any help will be appreciated. Brian, No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.0.238 / Virus Database: 270.11.3/1970 - Release Date: 03/28/09 07:16:00
Re: [Repeater-Builder] What is this antenna???
Hi Jeff, Yes, the elements are flat. There is one feed point at the bottom with the wiring going up the outside of the mast. Mast is 12ft in length, with a manufacturers cap on the top. Thhanks for the information: I will now do some research on that model number. Brian - Original Message - From: Jeff DePolo To: Repeater-Builder@yahoogroups.com Sent: Saturday, March 28, 2009 10:03 AM Subject: RE: [Repeater-Builder] What is this antenna??? If the elements are flat (not tubing), then it's a DB410. They stopped making them probably in the early 80's? --- Jeff -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of k5in Sent: Friday, March 27, 2009 9:39 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] What is this antenna??? Hi, Ok, I thought I have a db413 but I cannot count: Antenna is on a 12ft mast, 6 dipoles mounted vertically one above the other. No labels, 1.1 to 1 VSWR at 445.00mhz. Antenna is factory made with a top on it that looks like a DB Products. Any help will be appreciated. Brian, No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.0.238 / Virus Database: 270.11.3/1970 - Release Date: 03/28/09 07:16:00
[Repeater-Builder] KENWOOD TK-630H Tuned to 10 Meters for RB
Hello to the group. I just programmed my 630 for the Ten Meter Band using the SP Tune feature. Before I got a chance to tune the VCO/PLL TC51, 52 PLL lock voltage, the unit went into transmit. When it does come out of TX for a few seconds, it shows BUSY. I have tried to touch the the PLL but it has no effect. The unit was working on 34 MHZ and there is nothing hooked to the outside world to force PTT. The fact that it does cycle out of PTT for a few seconds, indicates to me there is not a component failure in the PTT Line. Any ideas would be greatly appreciated. Thanks in advance. JIM
Re: [Repeater-Builder] Re: Need information on a UHF repeater antenna made by Motorola
gebhardstephen wrote: I am pretty sure HD has aluminum strips that will work just fine. Should I make the radials 1/4 wave , or longer? About 10% longer.
[Repeater-Builder] Re: What is this antenna???
My first Db was a 410 in the same time period. It had tubular di-poles and tubular stand-off's, not the stamp sheet type now used. It had 8 pairs of di-poles (16 total) and was on a 2 section mast the same as the current DB-420. I don't know what has only 6 di-poles an a 12' mast unless it is a home brew from a damaged antenna. Everything I remember from the old DB catalogs for di-pole antennas was 1, 2, 4, 8, or 16 di-poles. Single sided arrays had 1, 2, 4 and 8 and pairs had 2, 4, 8, and 16. Doug N3DAB --- In Repeater-Builder@yahoogroups.com, Chuck Kelsey wb2...@... wrote: I would have guessed that they went to tubing earlier than the 80's, but my earliest Decibel antenna was around 1978-81 (they used tubing), so I can't say with any certainty. Chuck WB2EDV - Original Message - From: Jeff DePolo To: Repeater-Builder@yahoogroups.com Sent: Saturday, March 28, 2009 10:03 AM Subject: RE: [Repeater-Builder] What is this antenna??? If the elements are flat (not tubing), then it's a DB410. They stopped making them probably in the early 80's? --- Jeff
[Repeater-Builder] Latest RFS Brand Antenna (country of mfgr)
Just for the trivia, Installing a VHF base station using a brand new RFS Cellwave Omni Antenna. The label says the antenna is now made in Denmark. Appears to be very well made... just interesting to learn it was made in Denmark. cheers, s.
Re: [Repeater-Builder] What is this antenna???
I would have guessed that they went to tubing earlier than the 80's, but my earliest Decibel antenna was around 1978-81 (they used tubing), so I can't say with any certainty. Chuck WB2EDV - Original Message - From: Jeff DePolo To: Repeater-Builder@yahoogroups.com Sent: Saturday, March 28, 2009 10:03 AM Subject: RE: [Repeater-Builder] What is this antenna??? If the elements are flat (not tubing), then it's a DB410. They stopped making them probably in the early 80's? --- Jeff
RE: [Repeater-Builder] What is this antenna???
You may be right, could have been late 70's. I don't have any DB catalogs old enough to show the 410's. They may have continued to make the flat-stock 410's for a few years after they introduced the current line of tubing-stock element antennas (408, 420, 411, 413, etc.), not sure. I've only seen two of the 410's, and both were damaged (bad harness), so I can't say much more about them. A modern 6-bay would be a welcome compromise between a 4-bay and an 8-bay on UHF, IMHO. --- Jeff -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Chuck Kelsey Sent: Saturday, March 28, 2009 2:23 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] What is this antenna??? I would have guessed that they went to tubing earlier than the 80's, but my earliest Decibel antenna was around 1978-81 (they used tubing), so I can't say with any certainty. Chuck WB2EDV - Original Message - From: Jeff DePolo mailto:j...@broadsci.com To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder@yahoogroups.com Sent: Saturday, March 28, 2009 10:03 AM Subject: RE: [Repeater-Builder] What is this antenna??? If the elements are flat (not tubing), then it's a DB410. They stopped making them probably in the early 80's? --- Jeff No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.0.238 / Virus Database: 270.11.3/1970 - Release Date: 03/28/09 07:16:00
Re: [Repeater-Builder] What is this antenna???
But the feed harness would be a bit more difficult for 6 pairs (or 6 single elements). And, the original post indicated he had an antenna that had 6 single elements, I believe. Chuck WB2EDV - Original Message - From: Jeff DePolo j...@broadsci.com To: Repeater-Builder@yahoogroups.com Sent: Saturday, March 28, 2009 3:13 PM Subject: RE: [Repeater-Builder] What is this antenna??? A modern 6-bay would be a welcome compromise between a 4-bay and an 8-bay on UHF, IMHO. --- Jeff
[Repeater-Builder] Re: What is this antenna???
--- In Repeater-Builder@yahoogroups.com, Jeff DePolo j...@... wrote: If the elements are flat (not tubing), then it's a DB410. They stopped making them probably in the early 80's? I have a DB Products catalog copyright 1971. All antennas in this catalog show and describe 3/8 OD tubing for elements. Maybe the flat elements were a phase they went through sometime after 1971 and the early 80s??? Laryn K8TVZ
RE: [Repeater-Builder] What is this antenna???
But the feed harness would be a bit more difficult for 6 pairs (or 6 single elements). Nah, not really. You can power-divide into any number of branches, there's nothing sacred about multiples of two's. And, the original post indicated he had an antenna that had 6 single elements, I believe. Yeah, that's how the 410's were made, not dual dipole bays like the 404/408/420, but single dipoles like a 411/413. --- Jeff WN3A
RE: [Repeater-Builder] Latest RFS Brand Antenna (country of mfgr)
Installing a VHF base station using a brand new RFS Cellwave Omni Antenna. The label says the antenna is now made in Denmark. Appears to be very well made... just interesting to learn it was made in Denmark. cheers, s. That's odd, last week I picked up a case of Carlsberg pilsner and it was brewed in Meriden, CT ;-) Historically, domestic freight companies have had about a 50% success rate in delivering fiberglass antennas to me without damage. I wonder how much added trauma they suffer en route from Denmark? The last time ordered two Celwave sticks one arrived with the end of the tube busted open and the clamp set missing, and the other one was flattened in the middle as if it got run over by a forklift. And the driver had the nerve to rolls his eyes when I refused the shipment. Were your antennas from OZ-land packaged any different than those built in the US in the past? Just curious... --- Jeff
[Repeater-Builder] ICOM FR- 4000 REPEATER SALE
Will have a Like new Icom FR-4000 for sale the end of May 2009. It at this time is at my tower in TN just set up to ID every 15 mins. (no other use) Was installed in December 2008 new repeater. Will replace with Icom FR-6000. Asking price $1100.00 will program if needed and just add shipping cost. Will ship only in the US 48 states. thanks John
[Repeater-Builder] Re: Need information on a UHF repeater antenna made by Motorola
Looks like the general concensuss is to keep this one in service and not even bother trying the Diamond antenna. The Diamond is not even in the same class as this antenna in terms of construction and quality. There is a reason this antenna's list price was in the $500 range and the Diamond is little more than $100. I agree with the other poster, don't drill. The radials mounted about an inch down from the top of the aluminum part, not at the bottom where the N connector is. Get yourself some 1/2 inch wide, 0.100 soft aluminum (that's what they used on mine) and bend in three pieces to make the radials. Maybe one of the others who is a better draftsman than I will make a sketch for you. They are held onto the base by three (probably #8) machine screws in clamp fashion. This antenna is well worth the effort to get it going. Good Luck. Tom DGN --- In Repeater-Builder@yahoogroups.com, gebhardstephen stevegebh...@... wrote: Yes, that sounds like the antenna I have exactly, must be it. Looks like the general concensuss is to keep this one in service and not even bother trying the Diamond antenna. I don't have the radials though, but with this antenna I could even drill some holes in the collar that screws over the N connector and install radials that way. I bet that will help with the radiation pattern a bit. Thanks for all the assitance, as always, this is an awesome group. 73;s --- In Repeater-Builder@yahoogroups.com, Gerald Pelnar wd0fyf@ wrote: You described mine like you were looking at it. - Original Message - From: wb6dgn tallinson2@ To: Repeater-Builder@yahoogroups.com Sent: Friday, March 27, 2009 9:16 PM Subject: [Repeater-Builder] Re: Need information on a UHF repeater antenna made by Motorola Hi Gerald and the group, I think I've got one of these antennas too. It has a white fiberglass radome, just under 7 feet long and about an inch in diameter at the base, coupled to an aluminum bottom section about a foot long and 1-5/16 inch diameter. A protective sleeve of the aluminum unscrews to expose an N female connector. The logo is a black rectangle with a white ellipse centered over it. There was probably a name written in that ellipse but it's no longer readable now. There is a serial number tag on the aluminum base but some of the numbers are no longer readable due to a clamp damaging the tag. It also has the radial assembly just as you describe. I see no other markings or frequency range marked on it but, if it was pulled from the system I think it was, most of the channels were in the 453/458 range with one or two in the 467 range. I suspect it'll work just fine on the ham band. The mounting clamps are missing but they should be pretty easy to scrounge; if anyone has spares, let me know. Where is the frequency range marked on the antenna? If I know where to look, I'll try to clean a little of the dirt or oxidation to see if I can find it. Looks like a nice antenna. There's an RFS version in the Tessco catalog that suggests that they might be the OEM parent of this antenna. Tom DGN --- In Repeater-Builder@yahoogroups.com, Gerald Pelnar wd0fyf@ wrote: The radials just clamp on. Each one is bent to reach to the next. Small bolt fasten them together around the base. Gerald Pelnar WD0FYF McPherson, Ks - Original Message - From: gebhardstephen stevegebhard@ To: Repeater-Builder@yahoogroups.com Sent: Friday, March 27, 2009 1:41 AM Subject: [Repeater-Builder] Re: Need information on a UHF repeater antenna made by Motorola Thanks Gerald, that sounds like the one, except for the one I have does not have ground radials, and I don't see any place to install them either. I was contemplating changing the antenna to something like a Diamond F718A, it has better gain, almost double over the one I am using now, plus it is designed for the frequency I am on, I wonder if the small investment would yield better coverage. --- In Repeater-Builder@yahoogroups.com, Gerald Pelnar wd0fyf@ wrote: I have one of those in the garage. TDE-6082A It's about 7 feet long (I didn't measure it) and has radials on it. Label says 460- 470. I used it temporarily on a 443.275 machine here at the house for testing. SWR wasn't bad and worked just fine. Gerald Pelnar WD0FYF McPherson, Ks - Original Message - From: gebhardstephen stevegebhard@ To: Repeater-Builder@yahoogroups.com Sent: Friday, March 27, 2009 1:13 AM Subject: [Repeater-Builder] Re: Need information on a UHF repeater antenna made by Motorola That one is closer, but the length is wrong, and the one pictured has ground radials, this one does not. Without specifics I
[Repeater-Builder] Re: What is this antenna???
--- In Repeater-Builder@yahoogroups.com, Jeff DePolo j...@... wrote: If the elements are flat (not tubing), then it's a DB410. They stopped making them probably in the early 80's? Interesting Jeff, the DB410 pictured and described in my old DB catalog looks EXACTLY like a modern DB420. The elements are described as being 3/8 OD aluminum. Laryn K8TVZ
Re: [Repeater-Builder] Re: What is this antenna???
If I were to guess, and it's just that, I'd guess flat stock sometime on the 50's or 60's. Chuck WB2EDV - Original Message - From: Laryn Lohman lar...@hotmail.com To: Repeater-Builder@yahoogroups.com Sent: Saturday, March 28, 2009 4:01 PM Subject: [Repeater-Builder] Re: What is this antenna??? --- In Repeater-Builder@yahoogroups.com, Jeff DePolo j...@... wrote: If the elements are flat (not tubing), then it's a DB410. They stopped making them probably in the early 80's? I have a DB Products catalog copyright 1971. All antennas in this catalog show and describe 3/8 OD tubing for elements. Maybe the flat elements were a phase they went through sometime after 1971 and the early 80s??? Laryn K8TVZ
Re: [Repeater-Builder] Re: What is this antenna???
That's how I remember them too. Chuck WB2EDV - Original Message - From: Laryn Lohman lar...@hotmail.com To: Repeater-Builder@yahoogroups.com Sent: Saturday, March 28, 2009 5:02 PM Subject: [Repeater-Builder] Re: What is this antenna??? --- In Repeater-Builder@yahoogroups.com, Jeff DePolo j...@... wrote: If the elements are flat (not tubing), then it's a DB410. They stopped making them probably in the early 80's? Interesting Jeff, the DB410 pictured and described in my old DB catalog looks EXACTLY like a modern DB420. The elements are described as being 3/8 OD aluminum. Laryn K8TVZ
Re: [Repeater-Builder] Re: What is this antenna??? DB 406
DB 406 pre 1970 Re: [Repeater-Builder] DB-406 450-470MHz how useful on 440-450MHz? James 10 Aug 2004 00:31:31 - window.google_render_ad(); I had a DB404 (I think that was the number, two dipoles each side of the stick, 5 or 6 ft long?). This was made for 450-470 and the SWR was good at 441 (repeater output), however, I believe there was possibly a ton of uptilt as the coverage off the hill was horrible (even a diamond worked better ... I know ... don't mention that word :) ). I would test it and see how it does. James Chuck Kelsey wrote: By all means. Then you'll have your answer. Chuck WB2EDV - Original Message - From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Monday, August 09, 2004 5:45 PM Subject: Re: Re: [Repeater-Builder] DB-406 450-470MHz how useful on 440-450MHz? It is a folded dipole. I just checked Andrew's web site it is like the DB-411. I didn't know folded dipoles were so broad at these frequencies. I guess the next thing to do is test it out with and SWR meter. Steve WA6ZFT From: Chuck Kelsey [EMAIL PROTECTED] Date: 2004/08/09 Mon PM 05:32:44 EDT To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] DB-406 450-470MHz how useful on 440-450MHz? Maybe the 406 is an older model, my catalog doesn't show it. What type antenna is it? If it's a folded dipole array, you should be able to use it as is. Chuck WB2EDV - Original Message - From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Monday, August 09, 2004 4:02 PM Subject: [Repeater-Builder] DB-406 450-470MHz how useful on 440-450MHz? Regarding a DB-406 cut for 450-470MHz: How effective is it if used in the 440-450MHz region unmodified? If performace is sub-optimal, can the elements be extended, and will the phasing harness need to be lengthened? If it can be modified without being a labor of love, what's involved? (In your opinion whould it be a waste of time?) Thanks, Steve WA6ZFT --- On Sat, 3/28/09, Chuck Kelsey wb2...@roadrunner.com wrote: From: Chuck Kelsey wb2...@roadrunner.com Subject: Re: [Repeater-Builder] Re: What is this antenna??? To: Repeater-Builder@yahoogroups.com Date: Saturday, March 28, 2009, 4:16 PM That's how I remember them too. Chuck WB2EDV - Original Message - From: Laryn Lohman lar...@hotmail. com To: Repeater-Builder@ yahoogroups. com Sent: Saturday, March 28, 2009 5:02 PM Subject: [Repeater-Builder] Re: What is this antenna??? --- In Repeater-Builder@ yahoogroups. com, Jeff DePolo j...@... wrote: If the elements are flat (not tubing), then it's a DB410. They stopped making them probably in the early 80's? Interesting Jeff, the DB410 pictured and described in my old DB catalog looks EXACTLY like a modern DB420. The elements are described as being 3/8 OD aluminum. Laryn K8TVZ
Re: [Repeater-Builder] What is this UHF antenna
K5IN, The antenna you have is a DB-406. They are a old design and were fairly narrow banded (450-470). As a rule they do not make the Ham band with any kind of return loss numbers that are desirable for use as a 440 repeater antenna. With the loops orientated the way they are in your picture the old DB books showed the antenna to have a gain of approx 10.5 db. You will most likely need to replace the harness, but check it out thoroughly, it just might be one of the rare ones that will work well on the 440 band. 73, Steve / K6SCA --- On Sat, 3/28/09, k5in k...@comcast.net wrote: From: k5in k...@comcast.net Subject: [Repeater-Builder] What is this UHF antenna To: Repeater-Builder@yahoogroups.com Date: Saturday, March 28, 2009, 2:04 PM I know, I am just another (rank) amateur but here are some pictures of the mystery antenna. It appears to be 3 dipoles fed on the bottom half and 3 on top. Harness definitely appears to be factory made. Hopefully the pics will help someone to identify this for me. I have more pics
[Repeater-Builder] Re: Latest RFS Brand Antenna (country of mfgr)
Hi Jeff, The antenna arrived (OK) in the typical super thick round tube. Gonna see you at Dayton this year? Looking forward to the beer (pale ale) and brats (brauts) again. My long time Friday evening diner event was is (relatively) last min canceled so I'm looking around at other options. Crash a party or something similar. Wonder what Kenwood or some of the other radio companies are doing that night? cheers, s. Jeff DePolo j...@... wrote: That's odd, last week I picked up a case of Carlsberg pilsner and it was brewed in Meriden, CT ;-) Historically, domestic freight companies have had about a 50% success rate in delivering fiberglass antennas to me without damage. I wonder how much added trauma they suffer en route from Denmark? The last time ordered two Celwave sticks one arrived with the end of the tube busted open and the clamp set missing, and the other one was flattened in the middle as if it got run over by a forklift. And the driver had the nerve to rolls his eyes when I refused the shipment. Were your antennas from OZ-land packaged any different than those built in the US in the past? Just curious... --- Jeff Installing a VHF base station using a brand new RFS Cellwave Omni Antenna. The label says the antenna is now made in Denmark. Appears to be very well made... just interesting to learn it was made in Denmark. cheers, s.
[Repeater-Builder] Tower cost?
Fellows: How much are seven sections of used Rohn 45 tower worth? The tower is on the ground, has been painted, but the galvanized appears to be intact...no rust. No bent sections. Estimates? Thanks de David
[Repeater-Builder] Micor TPN1110 Filter Cap replacement.
Howdy gang. I have a UHF Micor repeater that was having intermod issues. I traced the problem to ripple on the main power supply. After pulling this monster out and flipping it over I noticed electrolite leakage around two of the large capacitors. I would guess this is a pretty common failure for these supplies of this vintage. Ok now the big questions. What is the best way to replace these bad boys? The are riveted on to the chassis and the solder joints look like they require some kind nuclear powered soldering iron. Has anyone been able to disect the caps from the outside and gut them installing new smaller sized ones from the top without major machine shop work or soldering with open flame? Are there any tricks out there? Bill N5ZTW
Re: [Repeater-Builder] KENWOOD TK-630H Tuned to 10 Meters for RB
I don't have any experience with Kenwood commercial radios, but I can tell you that I have repaired may Kenwood mics for their Ham radios that had flakey SMT capacitors in them causing them to key the radio at random times and for random lengths of time. An easy way to test for this is to disconnect the mic from the radio and see if the problem goes away. Eric, KH6CQ --- On Sat, 3/28/09, Jim Cicirello ka2...@gmail.com wrote: From: Jim Cicirello ka2...@gmail.com Subject: [Repeater-Builder] KENWOOD TK-630H Tuned to 10 Meters for RB To: Repeater-Builder@yahoogroups.com Date: Saturday, March 28, 2009, 7:36 AM Hello to the group. I just programmed my 630 for the Ten Meter Band using the SP Tune feature. Before I got a chance to tune the VCO/PLL TC51, 52 PLL lock voltage, the unit went into transmit. When it does come out of TX for a few seconds, it shows BUSY. I have tried to touch the the PLL but it has no effect. The unit was working on 34 MHZ and there is nothing hooked to the outside world to force PTT. The fact that it does cycle out of PTT for a few seconds, indicates to me there is not a component failure in the PTT Line. Any ideas would be greatly appreciated. Thanks in advance. JIM
Re: [Repeater-Builder] Tower cost?
David, Where aare you located? If you are close I will make you an offer, if you want to sell. I would say $50 - $75 per section. What color is it now? Collin -Original Message- From: drwoolweaver k5...@ix.netcom.com To: Repeater-Builder@yahoogroups.com Sent: Sat, 28 Mar 2009 8:16 pm Subject: [Repeater-Builder] Tower cost? Fellows: How much are seven sections of used Rohn 45 tower worth? The tower is on the ground, has been painted, but the galvanized appears to be intact...no rust. No bent sections. Estimates? Thanks de David
[Repeater-Builder] Re: Need information on a UHF repeater antenna made by Motorola
I am taking everyone's advice on this topic. I agree the antenna I am using now is superior to Diamond, as you said, hence the expensive list price. It does a very good job as it is, and I am sure it will do better after the ground radials are installed. I got the clamps and aluminum strips today, provideing it's not windy tomorrow, that is the project! Thanks again to everyone for assiting. --- In Repeater-Builder@yahoogroups.com, wb6dgn tallins...@... wrote: Looks like the general concensuss is to keep this one in service and not even bother trying the Diamond antenna. The Diamond is not even in the same class as this antenna in terms of construction and quality. There is a reason this antenna's list price was in the $500 range and the Diamond is little more than $100. I agree with the other poster, don't drill. The radials mounted about an inch down from the top of the aluminum part, not at the bottom where the N connector is. Get yourself some 1/2 inch wide, 0.100 soft aluminum (that's what they used on mine) and bend in three pieces to make the radials. Maybe one of the others who is a better draftsman than I will make a sketch for you. They are held onto the base by three (probably #8) machine screws in clamp fashion. This antenna is well worth the effort to get it going. Good Luck. Tom DGN --- In Repeater-Builder@yahoogroups.com, gebhardstephen stevegebhard@ wrote: Yes, that sounds like the antenna I have exactly, must be it. Looks like the general concensuss is to keep this one in service and not even bother trying the Diamond antenna. I don't have the radials though, but with this antenna I could even drill some holes in the collar that screws over the N connector and install radials that way. I bet that will help with the radiation pattern a bit. Thanks for all the assitance, as always, this is an awesome group. 73;s --- In Repeater-Builder@yahoogroups.com, Gerald Pelnar wd0fyf@ wrote: You described mine like you were looking at it. - Original Message - From: wb6dgn tallinson2@ To: Repeater-Builder@yahoogroups.com Sent: Friday, March 27, 2009 9:16 PM Subject: [Repeater-Builder] Re: Need information on a UHF repeater antenna made by Motorola Hi Gerald and the group, I think I've got one of these antennas too. It has a white fiberglass radome, just under 7 feet long and about an inch in diameter at the base, coupled to an aluminum bottom section about a foot long and 1-5/16 inch diameter. A protective sleeve of the aluminum unscrews to expose an N female connector. The logo is a black rectangle with a white ellipse centered over it. There was probably a name written in that ellipse but it's no longer readable now. There is a serial number tag on the aluminum base but some of the numbers are no longer readable due to a clamp damaging the tag. It also has the radial assembly just as you describe. I see no other markings or frequency range marked on it but, if it was pulled from the system I think it was, most of the channels were in the 453/458 range with one or two in the 467 range. I suspect it'll work just fine on the ham band. The mounting clamps are missing but they should be pretty easy to scrounge; if anyone has spares, let me know. Where is the frequency range marked on the antenna? If I know where to look, I'll try to clean a little of the dirt or oxidation to see if I can find it. Looks like a nice antenna. There's an RFS version in the Tessco catalog that suggests that they might be the OEM parent of this antenna. Tom DGN --- In Repeater-Builder@yahoogroups.com, Gerald Pelnar wd0fyf@ wrote: The radials just clamp on. Each one is bent to reach to the next. Small bolt fasten them together around the base. Gerald Pelnar WD0FYF McPherson, Ks - Original Message - From: gebhardstephen stevegebhard@ To: Repeater-Builder@yahoogroups.com Sent: Friday, March 27, 2009 1:41 AM Subject: [Repeater-Builder] Re: Need information on a UHF repeater antenna made by Motorola Thanks Gerald, that sounds like the one, except for the one I have does not have ground radials, and I don't see any place to install them either. I was contemplating changing the antenna to something like a Diamond F718A, it has better gain, almost double over the one I am using now, plus it is designed for the frequency I am on, I wonder if the small investment would yield better coverage. --- In Repeater-Builder@yahoogroups.com, Gerald Pelnar wd0fyf@ wrote: I have one of those in the garage. TDE-6082A It's about 7 feet long (I didn't measure it) and has
