RE: [Repeater-Builder] Motorola cabinet key wanted

2010-02-24 Thread ka9qjg
Thank You , I now have a Shortcut on My Desktop to that and Even on My USB Thunbdrive and 3 1/4 floppy disk , Yes some still use them and that has nothing to do with old age lol Happy Repeater Building Don KA9QJG This is what you saw - and this is what you are looking for:

[Repeater-Builder] Re: Motorola Power Supply Questiona

2010-02-24 Thread zl3tda
Hey Gareth, Nice to hear from you. Thanks for the info on the power supply and I will heed your warnings about battery types. I am possibly able to get a circuit diagram for this from another group member and this will be very helpful in my possible future use of this supply. My primary want

Re: [Repeater-Builder] Re: Motorola Power Supply Questiona

2010-02-24 Thread Gareth Bennett
Hiya Graham, One of the reasons we binned these type of supplies was for excessive AC ripple that they produced, just be mindful of this on your adventures with sealed type batteries. By the way, If you need solar panels try this crowd out over in Oz,

Re: [Repeater-Builder] Re: Motorola Power Supply Questiona

2010-02-24 Thread Mike Morris
The photo looks like a repeater supply. Many repeater supplies provided a 9.6v DC low current output for the receiver and exciter, some had a second low current output at 13.5-13.8vDC at 3-4 amps for the other audio stages, and most had an unregulated (as high as 16v) high current output for the

[Repeater-Builder] Re: Motorola cabinet key wanted

2010-02-24 Thread Tony
Try Repeater-Builder key page http://www.repeater-builder.com/keyspage/keyspage-index.html

Re: [Repeater-Builder] Motorola cabinet key wanted

2010-02-24 Thread Lee Pennington
Ray, ONE FOR STARTERS, could also use one EFJohnson cabinet lock assembly as well. Thanks de Lee , K4LJP 73 On Wed, Feb 24, 2010 at 12:47 AM, ray kalbfeld rpkalbf...@hotmail.comwrote: how many Johnson keys you need? Raymond P. Kalbfeld 16850 Collins Avenue Suite 112-463 Sunny

[Repeater-Builder] Re: Motorola cabinet key

2010-02-24 Thread Dan Hancock
If it is the double sided key then its a 2553. If the cabinet has an external handle that the lock is in its a CH751. For some reason Motherola used a different key on the 6' cabinets than on the shorter (Compa) cabinets. Unfortunately I don't have a spare, but they are made by Chicago Lock Co.

Re: [Repeater-Builder] Motorola cabinet key wanted

2010-02-24 Thread Joe
Hello Don, Look at the bright side of life. Tomorrow you'll be having fun looking for it again! 73, Joe, K1ike Also heading for the other side of the hill... ka9qjg wrote: Let Me tell You youngsters out here How bad Memory loss is , as Some of us get older I could swear that on

[Repeater-Builder] Ground Plane radial length for DB-201

2010-02-24 Thread Chuck Kelsey
From a Decibel Products engineer regarding the length of the radials on the DB-201: these values were determined empherically for best performance and may be due to the offset characteristics of the folded dipole. Chuck WB2EDV - Original Message - From: skipp025 skipp...@yahoo.com

[Repeater-Builder] Re: Ground plane yada yada

2010-02-24 Thread Al Wolfe
Actually, the information presented in the QST article was in reference to the practical feeding of the driven element of yagi type antennae where the normal feedpoint impedance can be quite low and may well be in the range of 8 to 15 ohms. So raising the impedance from 36 to 50 ohms with this

[Repeater-Builder] Anyone work on a Radio Specialty Mfg Mountain Top Repeater before?

2010-02-24 Thread AJ
I have not one but two of these gems sitting in my office right now... 2 channel crystal controlled repeaters in a nice battleship grey cabinet. I believe BLM used these here in the western states for quite a long while before switching to Daniels. A factory test sheet in one of the 3 service

[Repeater-Builder] Genesis series UHF antennas

2010-02-24 Thread hitekgearhead
A while back didn't someone post that they had UHF Motorola Genesis series antennas available at a good price? I am looking for a few, maybe as many as a dozen, if the price is right. Thanks, Albert

Re: [Repeater-Builder] Anyone work on a Radio Specialty Mfg Mountain Top Repeater before?

2010-02-24 Thread Milt
Just the standard words of wisdom; be sure you verify that it works, and how it works before starting any conversion. That way you only have to deal with one problem at a time not compounded problems. Milt N3LTQ - Original Message - From: AJ To:

Re: [Repeater-Builder] Anyone work on a Radio Specialty Mfg Mountain Top Repeater before?

2010-02-24 Thread AJ
Completely understood :) The first unit I was able to verify is acting correctly on the 173/171 pair in to a dummy load with 8 watts out, broke squelch at .11 uV. Second unit was missing the TX crystal; swapped between cabinets and had identical results. On Wed, Feb 24, 2010 at 9:24 AM, Milt

[Repeater-Builder] dual band convertacom

2010-02-24 Thread hitekgearhead
I know I am going to get the singular answer of WHY but I really would like some technical input on this. In my car I have an old Genesis series convertacom connected to a dual band Comet antenna. I often will swap my VHF and UHF HT back and forth and utilize the dual band capability of my

Re: [Repeater-Builder] dual band convertacom

2010-02-24 Thread Lee Pennington
Not why but WHY !! On Wed, Feb 24, 2010 at 11:56 AM, hitekgearhead hitekgearh...@hotmail.comwrote: I know I am going to get the singular answer of WHY but I really would like some technical input on this. In my car I have an old Genesis series convertacom

Re: [Repeater-Builder] dual band convertacom

2010-02-24 Thread Chris Quirk
2 coaxial switches will work, and you could leave power on. Given that I know what I am capable of and this type of system would lead to muliple failures by me as I failed to remember to switch things. If it was me I would just move the coax connectors as I swapped radios. I have done something

RE: [Repeater-Builder] dual band convertacom

2010-02-24 Thread Jeff DePolo
My initial idea was to run an antenna switch from the convertacom to the amps so I can manually select which one the signal goes to. Then on the output side of the amps I thought about using an antenna duplexer on the output of the amps to feed the antenna. I think you'll find that

Re: [Repeater-Builder] dual band convertacom

2010-02-24 Thread Marc Lonstein
Try using a dual amp. And dual antenna then you won't forget to switch. Just my 2 cents Ki4ljm Marc Lonstein M.O. Unlimited Inc. P.O. Box 5364 Fort Lauderdale, FL 33310-5364 Ph: 954-720-9200 Ph: 561-368-3557 Fax: 561-368-1885 mailto:m...@mounlimited.com www.mounlimited.com This e-mail

Re: [Repeater-Builder] Re: Ground plane yada yada

2010-02-24 Thread allan crites
In the gnd plane example the feed point is in series with the driven element, and in the example in which you are referring there is a tap up the driven element understandably to get to a higher impedance and the feed is in parallel to the driven element (as in a tap up an inductor in a

Re: [Repeater-Builder] dual band convertacom

2010-02-24 Thread Kris Kirby
On Wed, 24 Feb 2010, hitekgearhead wrote: What I would like to do is parallel these two amps with some kind of switching/duplexer setup so that I could easily switch from VHF to UHF. My initial idea was to run an antenna switch from the convertacom to the amps so I can manually select

[Repeater-Builder] TLE1714A PA Mod to 440 MHz?

2010-02-24 Thread Lou
Hello, I have a TLE1714A PA (470-512 MHz) That I would like to use for my Repeater on 449 MHz. I see in the manual there is a few capacitor, transistor and inductor changes compared to the TLE1713A PA (450-470 MHz ) PA. I also noted the microstrip is a different part number and can see there

Re: [Repeater-Builder] Re: Can the 4th harmonic of 1250 AM keep UHF repeaters locked up?

2010-02-24 Thread Nate Duehr
On 2/23/2010 3:11 PM, Jim WB5OXQ inb Waco, TX wrote: Is it possible the AM signal is getting into an audio stage instead of the receiver front end? I had that happen once. Same here. All audio inteconnects are now tiny coax cables at that site now, installed with shield grounded at ONE

RE: [Repeater-Builder] Re: Can the 4th harmonic of 1250 AM keep UHF repeaters locked up?

2010-02-24 Thread Jeff DePolo
On 2/23/2010 3:11 PM, Jim WB5OXQ inb Waco, TX wrote: Is it possible the AM signal is getting into an audio stage instead of the receiver front end? I had that happen once. Same here. All audio inteconnects are now tiny coax cables at that site now, installed with shield

RE: [Repeater-Builder] Motorola cabinet key wanted

2010-02-24 Thread Gary Schafer
Ok, thanks to all that replied. It looks like it is a 2553 that I need. Looking at the chart it looks like the CH751 is for the old outdoor cabinet and the 2553 is for the indoor cabinet. Also looks like the GE cabinet that I have is probably the desk mate and takes the LL201 key. Ted, K9MDM

Re: [Repeater-Builder] Re: Can the 4th harmonic of 1250 AM keep UHF repeaters locked up?

2010-02-24 Thread KT9AC
If it was just audio then there would be no feedback of the PL/DPL tones, keeping the repeater locked up. Good advice though. Jeff DePolo wrote: On 2/23/2010 3:11 PM, Jim WB5OXQ inb Waco, TX wrote: Is it possible the AM signal is getting into an audio stage instead of the receiver

Re: [Repeater-Builder] dual band convertacom

2010-02-24 Thread Chris Quirk
On the comment below all I can mention is from my experience which may or may not be valid in this case. When running amplifiers through diplexors as suggested I have damaged the out put transistors on both units, no I am not sure exactly what did it but as both amplifiers failed my guess is as

RE: [Repeater-Builder] Motorola cabinet key wanted

2010-02-24 Thread Bill Hudson
OK - you are getting closer. Yes, from your original description of the Motorola cabinet, the 2553 is correct. It is the Micor / Motrac era. Yes, the CH751 is the large beige upright cabinet with a handle on it. Motrac era. NO, if it is truly a GE DESKMATE cabinet, it will take a

RE: [Repeater-Builder] Motorola cabinet key wanted

2010-02-24 Thread Gary Schafer
Hi Bill, Well now I am having second thoughts! The Motorola cabinets that I have are older than the Motrac era. I can't recall the model of the radios but the finals in one are 100TH tubes. That was before the motrac. The cabinets are at my farm in Wisconsin so I can't run out and look at

RE: [Repeater-Builder] Re: Can the 4th harmonic of 1250 AM keep UHF repeaters locked up?

2010-02-24 Thread Gary Schafer
Don't be too sure about that. Once the am station signal gets into the receiver it can go anywhere and cause havoc. It could be getting into the IF or the mixer once picked up by cables. 73 Gary K4FMX -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater-

RE: [Repeater-Builder] Motorola cabinet key wanted

2010-02-24 Thread Ted Bleiman K9MDM - MDM Radio
gary let me know which keys you think you'll need i 'm certain i have a wide selection. mot-ge-efj-rca-and other even older. mdm Ted Bleiman K9MDM MDM Radio     If its in stock...we've got it! P O Box 31353 - Chicago ,IL 60631-0353  Phone 773. 255. 9838  fax 773.775.8096 see our

RE: [Repeater-Builder] dual band convertacom

2010-02-24 Thread Mark
Albert, I had a very similar installation as you describe in my car, and I used a dual-band brick PA with my setup. 5W VHF yielded 50W / 4W UHF yielded 40W. My biggest issue with the setup was they side contacts on my radios wouldn't make good contact all the time with the MVA, so I yanked it in

[Repeater-Builder] Re: Key Collection

2010-02-24 Thread skipp025
Ted Bleiman K9MDM - MDM Radio k9...@... wrote: Gary let me know which keys you think you'll need i 'm certain i have a wide selection. mot-ge-efj-rca-and other even older. mdm Oh yeah..? Got an Allen B. Dumont, (Fred) Link key in that collection? :-) s.

Re: [Repeater-Builder] Re: Can the 4th harmonic of 1250 AM keep UHF repeaters locked up?

2010-02-24 Thread no6b
At 2/23/2010 17:16, you wrote: Mark et al, Yes, this repeater is using the Motorola T1500 series bandpass cavities (two each for rx and tx). I've tried running rx and tx both duplex and seperate (borrowing a nearby antenna with permission). I can hear the interference underneath my signal when I'm

Re: [Repeater-Builder] Re: Key Collection

2010-02-24 Thread Kevin Custer
skipp025 wrote: Oh yeah..? Got an Allen B. Dumont, (Fred) Link key in that collection? My father had a Link FM transmitter on VHF - used a pair of 2E26's in the final. It was paired with a receiver, but I don't recall what it was. The receiver would get so hot it would burn up the tube

RE: [Repeater-Builder] Re: Key Collection

2010-02-24 Thread Radioman
Did Fred use locks? Perhaps that was your point. I don't remember locks on the mobiles or upright base stations that I had. Seems like the mobile covers went on and off similar to the GE twin coffins (which I don't remember requiring a key). It's hard to remember the details of those radios except

[Repeater-Builder] Re: motorola repeater cable problem

2010-02-24 Thread ad6nh
Old topic, but I thought I would start here rather than a new thread. I am also having difficulties in that when I plug my repeater cable between my two SM50s, the transmit radio immediately goes into transmit. I am fairly certain I have everything programmed properly, with Pin 8 programmed

RE: [Repeater-Builder] Re: Key Collection

2010-02-24 Thread Bill Hudson
Yep - I even have the round grilled speaker that said Link in the felt. Bill _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Radioman Sent: Wednesday, February 24, 2010 4:40 PM To: Repeater-Builder@yahoogroups.com Subject:

[Repeater-Builder] Re: New to 900mhz,, PL or DPL?

2010-02-24 Thread Jeremy (KB1REQ)
Here in southern New England where the 900MHz band has flourished in the absence of a 70cm network. I have not been personally involved in putting any of the repeaters on the air, but I can tell you that the split is pretty even between Pl/DPL. Not sure how it will work with a 800 to 900MHz

RE: [Repeater-Builder] Re: Key Collection

2010-02-24 Thread Radioman
What's the key number or other stamping? Now I'm going to have to look thru my key collection and find it. Somewhere I have a picture of me sitting next to my Link six meter base station, but the radio and all the spare transmitters and receivers and the mobiles are long gone. Harry, W0BL

RE: [Repeater-Builder] Micor UHF Repeater Base 9.6 vdc current requirement?

2010-02-24 Thread Eric Lemmon
During receive only, the draw is about 0.125 amperes. During duplex transmit, the current draw goes up to about 0.355 amperes. These numbers were measured on one Micor station, and I would expect the current draw to vary perhaps +/- 50 mA between various stations. YMMV. 73, Eric Lemmon WB6FLY

Re: [Repeater-Builder] Re: Key Collection

2010-02-24 Thread Don Davison
If you have a similar key, you may be able to get into the cabinet my smoking a key.. Go to Youtube to learn how, if you don't know or have forgotten. From: Radioman radio...@steamboatnews.com To: Repeater-Builder@yahoogroups.com Sent: Wed, February 24, 2010

RE: [Repeater-Builder] New to 900mhz,, PL or DPL?

2010-02-24 Thread Eric Lemmon
Scott, A proper answer must address the differences in the way Amateur and commercial radios encode and decode the PL (CTCSS) and DPL (CDCSS) tones. Generally, commercial-quality portable and mobile radios can encode or decode both schemes well. Again generally, most Amateur-grade radios can

[Repeater-Builder] Re: Can the 4th harmonic of 1250 AM keep UHF repeaters locked up?

2010-02-24 Thread larynl2
I agree with Bob. Mixing could also occur down at the guy anchor area, where cables are woven through the turnbuckles. Had it happen here... Laryn K8TVZ The cause of your interference problem is not RX overload. It is as others have suggested: a mix occurring somewhere in the near

[Repeater-Builder] Re: Key Collection

2010-02-24 Thread wb6dgn
My father had a Link FM transmitter on VHF - used a pair of 2E26's in the final Never saw that transmitter. The ones that I had used a 2E26 to drive an 829B final for VHF high. Only put out about 30 to 40 watts but it was an easy mod. to a 5894. It would smoke then; easily put out 80 to

[Repeater-Builder] Re: Key Collection

2010-02-24 Thread wb6dgn
Oh yeah..? Got an Allen B. Dumont... Back in the day I bought a bunch of those old DuMont radios at a government auction. Didn't know anything about them but I figured, how bad could they be? Well,I found out. I ordered one set of crystals, messed with the thing for a while and finally

[Repeater-Builder] Re: TLE1714A PA Mod to 440 MHz?

2010-02-24 Thread kk2ed
Just put it on the air and run with it. I have been using a TLE1714A PA on 445MHz for over 15 years, and it actually puts out a little more than some of the 1713's I have used. I never did any down-banding mods to it, as it has played well as is. Efficiency is no worse than the 1713s at

[Repeater-Builder] RCA 50 MHz bands (low band) manual needed Series 700 / Series 1000

2010-02-24 Thread Matt Harker
I am still looking for a service manual / system index for the RCA Series 700 and/or Series 1000 mobile radios in the 50 MHz bands (VHF low band).  Any help is appreciated.  Please reply to kc5...@yahoo.com Thank You! 73's de  KC5DBH Matt

[Repeater-Builder] email for home depot OT

2010-02-24 Thread JG
Hi guys This is way over the top..:) but I am trying to purchase a part for the Drill Doctor 750 Professional, and the Home Depot lists as in-stock. Part # required is sa01326ga. I proceeded to the check out basket only to find they have not included Australia in their menu for PnP. Even

[Repeater-Builder] Re: Can the 4th harmonic of 1250 AM keep UHF repeaters locked up?

2010-02-24 Thread Ron Patten
Tony, Do you hear a matching signal around the site on 5 MHz? Ron