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Kenneth Scharf · January 19th 10, 04:19 PM posted to rec.radio.amateur.homebrew

wrote:
On Jan 18, 4:16ï¿½pm, Kenneth Scharf wrote:
Gerry Lawlor wrote:
Hi
I am currently interested in restoring an old well-constructed homebrew
exciter which was built in the 50's from (I believe) an ARRLhandbook design.
It has a 6AG7 (osc) , 6V6 (doubler/tripler), 807 (PA) lineup with clamp tube
protection on the 807. ï¿½It was intended to drive an 813 amplifier as far as
I know. ï¿½It appears to have been used mainly on 15, 20 and 40m and is
crystal controlled. ï¿½It was last used about 30 years ago but is in good
overall condition and the quality of the components used appears to be good.
I would appreciate any data on this design, particularly circuit
information. ï¿½A pointer even to the original handbook article would be of
value.
Thanks in advance for any asssistance.
Gerry/EI9FV
The rig you are talking about is on page 192 of the 1951 ARRL HB.
The tube lineup is 6AG7 osc-doubler, 6V6 multiplier, 807 final, 6Y6G
clamp tube. ï¿½This chassis was then link coupled to a second chassis with
a pair of 813's in push pull.

In the 1952 HB there is a similar rig without the 807, the 6V6 drives a
single 813 and the 6Y6 is the clamp tube for the 813.

It is possible that the design also appeared in QST. The rig from the
1952 HB may well be:
"Building an 813 Transmitter--Modern Style", by R. Smith, W1FTX,11021 SW 57th Street, Davie, FL 33328-6331
Home: 954-689-4403 Email:

QST, July 1951 pp 11-17.

I did not find a QST article for the rig described above from the 1951
HB. That does not mean that it does not exist.

73 John KC0G

In general the ARRL HB staff designed many projects just for inclusion
in the handbook. QST articles were sometimes reprinted in the handbook
as well. One example I can think of off the bat was in the '67 handbook
there was a receiver called the HB-67 which was a design made for the
handbook. This was an 80-10 receiver using crystal controlled
converters feeding an 80 meter receiver. The design was VERY similar to
that of a the HA350 receiver then being sold by Lafayette Radio.
On the other hand there was a CW transmitter and amplifier featured
in QST that was re-printed in the HB for a few years. That was a two
part article about the 'T9er' and 'S9er'. The transmitter ended in a
pair of 6146B's and the amplifier used a single 3-500Z to run the legal
limit. The amp would also run as a half gallon on SSB.

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