eHam

eHam Forums => Misc => Topic started by: W0FM on July 13, 2011, 01:45:44 PM



Title: 1960's era VHF car radio converter info
Post by: W0FM on July 13, 2011, 01:45:44 PM
I'm trying to get some information on a converter that allowed my AM car radio to receive VHF public safety channels and I'm coming up blank.  The little aluminum box was about 2x2x3" and had a single switch (In/Out) on the front.  The rear panel had a Motorola auto radio type jack, a 24" length of coax with a Motorola automotive plug on the end and a stranded wire for 12VDC.  The coax from the converter plugged into the car's AM broadcast antenna jack and the car antenna plugged into the back of this converter.  The front end was as wide as a barn door, but it worked.

I think it was about 1960 or so.  Can anyone remember a converter like this?  Any help with the brand name or model number would be appreciated.

Thanks.

Terry, WØFM


Title: RE: 1960's era VHF car radio converter info
Post by: WU0R on July 13, 2011, 03:38:37 PM
RME made stuff like that...the 152A was one, there were a host of others...you might e-mail Glen K9STH, he kinda plays and dealt with that stuff...

http://www.qsl.net/la5ki/org/rm/vhf152a.htm



Title: RE: 1960's era VHF car radio converter info
Post by: K7UNZ on July 13, 2011, 05:48:35 PM
Terry, there were dozens of those converters available back then. 

Even the old JC Whitney auto parts catalogs had them (along with the underdash 45rpm record players....).

Ah, memories.......(hi)!

73, Jim/k7unz



Title: RE: 1960's era VHF car radio converter info
Post by: KJ6EAD on July 13, 2011, 06:38:13 PM
Do any of these look familiar?
http://k9sth.com/uploads/Converter_collection-1.pdf (http://k9sth.com/uploads/Converter_collection-1.pdf)


Title: RE: 1960's era VHF car radio converter info
Post by: W3LK on July 13, 2011, 06:50:28 PM
Do any of these look familiar?
http://k9sth.com/uploads/Converter_collection-1.pdf (http://k9sth.com/uploads/Converter_collection-1.pdf)

I had one, but it didn't look like any of the photos. This was in the early 70s. I also had a Gonset Super 6 in my dad's car when I was in high school. Neat little converter. I drove my parents batty with it on trips.


Title: RE: 1960's era VHF car radio converter info
Post by: W0FM on July 14, 2011, 12:30:07 PM
Jim, I bought a lot of car stuff from J.C. Whitney, so that could be a possibility.  I cannot get K9STH's photo .pdf to open in either IE or Firefox so haven't had a look there yet.

WU0R, I had some RME converters at our high school radio club and it was definately not of that high calibre.  This is your basic aluminum Bud box enclosure.  Very plain.

Thanks for everyone's input.  I'll keep you posted on my search.

73,

Terry, WØFM


Title: RE: 1960's era VHF car radio converter info
Post by: W0FM on July 21, 2011, 10:46:54 AM
I was finally able to look at the K9STH site again and the International Crystal converter appears to be the closest physically to what I had (but mine didn't have "Mobileer" written across the front).  So mine was probably a variation of the International Crystal version.  Thanks everyone.

The search continues......

73,

Terry, WØFM


Title: RE: 1960's era VHF car radio converter info
Post by: KG4YMC on July 25, 2011, 01:51:03 PM
hi, know this won't help, but I had an audiovox fm converter I used to use in my 69 dodge coronet with the bendix am radio in it . The thing worked great, wasn't fm stero , but with the bendix radio it would pick up all over. Not much bigger than a penlight battery but was pretty cool .don't know if audiovox made converters for other bands , but it  worked good, connected beween car antenna and am radio , think you had to tune to 1600 kc on am , use to set button and be all set for fm , cool at time . kg4ymc by the way audivox used to make good radios and stuff, don't know if they still are good or not , bendix was great also, but had to put havey duty output transiter in am radio in dodge , for some reason kept going out , use to have to drop part of  ac ductwork to get radio out .... ah the memories... ;D


Title: RE: 1960's era VHF car radio converter info
Post by: KJ6EAD on July 26, 2011, 03:37:08 AM
More findings:

International Crystal Manufacturing Co., Inc. advertisement in Amateur Radio, October, 1960.
http://www.scancat.com/73s-Sample.pdf (http://www.scancat.com/73s-Sample.pdf)

Thread on converters from QRZ.
http://forums.qrz.com/showthread.php?275078-Vacuum-tube-down-converters&s=4230e39b4f49bf5037a7a99866f6c6d8 (http://forums.qrz.com/showthread.php?275078-Vacuum-tube-down-converters&s=4230e39b4f49bf5037a7a99866f6c6d8)

International Crystal's current website.
http://www.icmfg.com/ (http://www.icmfg.com/)


Title: RE: 1960's era VHF car radio converter info
Post by: W0FM on August 03, 2011, 11:53:07 AM
Nice find, Dave.  This is a better pic of the International Crystal unit than what I had found.  I'm pretty sure that's the converter I had.  Maybe it was wearing a different brand name at the time, but it had the slide switch, power lead and antenna conectors on both ends (In and Out) just like that.  Thanks for taking time to look and remember this post for me.

73,

Terry, WØFM