"Bruce W. Ellis" wrote in message
...
On Sat, 06 Dec 2008 16:41:00 -0500, ken scharf
wrote:

Fred McKenzie wrote:
In article
,
JIMMIE wrote:

I am considering an 807 as a replacement

Jimmie-

Just how simple will this transmitter be? My first novice transmitter
was built from an ARRL publication back in the 50s. The specification
was for a single 6V6, used as a crystal oscillator with output coupled
to the antenna.

I found I could get more power with a 6L6 plugged into the same socket.
Along the way to getting more power, I found that crystal current would
increase to the point where the crystal would fracture!

If you use a 807 or 1625, I hope you will have a lower power oscillator
driving it. Something like a 6AG7 would make a nice crystal
oscillator,
and should have sufficient output to drive an 807.

73,
Fred
K4DII
The 6AG7 - 807 combo is a classic. E. F. Johnson sold a 50 Watt Novice
transmitter in the '50's with this tube line up (also a 5R4GY rectifier
IIRC). Other tubes that have been used as the oscillator/driver were
the 6CL6, 12BY7, 6GK6, and 5763.

That would be the Johnson Viking Adventurer. I built one in 1955 from
a kit. I later replaced the 807 with a 6146 - didn't make much
difference, actually.

Bruce W0BF


Yep, that's what I started out with. Bought my Adventurer used back in 1964
along with an HQ-110c.
When I got my General ticket I got a nice drifty Knight Kit VFO.

My antenna relay was taken from an old pinball machine!

My best contact was Ascension Island . Africa on a 40 meter CW..

I used a
wire vertical...
that was not terribly vertical G