On Wed, 6 Aug 2008 02:28:38 -0400, "Ed Cregger"
wrote:

|
|"Ed" wrote in message
.192.196...
| notbob wrote in
| :
|
| OK, I got an old linear that I acquired from my late FIL about 20 yrs
| ago. It's been in cool clean storage ever since and I'd like to get
| rid of it. I tried to sell on ebay till I got mucho alerts to the
| effect ebay no liking CB linear listings. I pulled it. I don't know
| much about radio, but I'm sure it was a CB linear cuz he never had a
| ham license. I was advised by one helpful fellow that I should list
| it as a ham linear and make no mention of CB. That makes sense, but I
| pride myself on being very accurate and honest about what I sell and
| so would like some help identifying this particular piece of hardware,
| it at all possible.
|
| It has no brand name on it, so I suspect it's a homebrew. It's a very
| nice job if it is. It has a 2" high chassis box with one vacuum tube
| and a pretty good size transformer mounted on top. A 4" high full
| cover over that is machine perferated on 3 sides for cooling.
|
| Transformer: GRAND 11-2206A GT-6974 7578049
| vacuum tube: 6805/EL84
|
| On lower front lower chassis, it has an ON/OFF and STDBY switch and
| one red light. The meter is a Sonar brand:
|
| S units -- DB
| Output 0-30+
|
| Rear lower chassis has IN and OUT antenna jacks and a ground wire
| terminal and of course, an AC plug. Overall dimensions with cover on
| are 6"H X 7"W X 5"D. Weight approx 6-8lbs.
|
| I don't know if anything can be determined by the above info, but any
| help would be appreciated. I can open her up all the way, if that
| will help. I'm not real savvy on radio, but do know basic electronics
| and can identify different components. Thank you.
|
| nb
|
|
|
|
| The plate dissapation of the tube you described is only about 10 or 20
| watts. This is not anything any ham would want.
|
| Ed K7AAT
|
|
|And that is at audio frequencies, IIRC. Lots of guitar amps use that tube in
|push-pull, or AB1 single tube config. I'm reaching way back and my memory is
|having problems, but I think I'm in the ballpark.
|
|Ed, NM2K
|
|-----------------

12 watts plate dissapation in class A1. They are useful upto 30 MHz or
so. They were also used as RF output stage for some older tube CB
radios in the 60's. You can get about 3.5 watts carrier out in a class
C plate modulated stage. Sufficient for meeting the requirements for
CB. They were definitely more common in audio applications.

james