> the TX1
Ah yes, the "Scratchy Apache" was a fine radio. I had the SB-10 SSB
adapter to go with it. It worked great with a VHF transmitting
converter because the low-level output from the SB-10 was just about the
right power level to drive the converter.
I used to frequently get unsolicited compliments on my audio quality.
(No crystal filters in the transmit path.)
Alan N1AL
On 10/23/2014 05:57 PM, david Moes wrote:
the TX1 with High level plate modulation it will do way more on AM
than the K3 I get about 110W carrier. the TX1 didn't do SSB without
additional hardware which I have but its not yet restored. the real
point is the vintage fun factor of restoring and getting on the air
with 110lbs of iron.
David Moes
VE3DVY, VE3SD
On 10/23/2014 20:44, Don Wilhelm wrote:
Re: Heath TX1 power --
The Heath TX1 used a pair of 6146 output tubes, those normally run
180 watts *input* power.
Modern transceivers (K3 included) are rated fort power output.
If one assumes a 67% efficiency (realistic) at 180 watts input, the
output power will be 120 watts - that is about what one can get from
a K3, although I do not recommend running the power knob to more than
100 watts to keep IMD under control.
Sooo - I don't think the TX1 will "crank out a whole more power" It
seems to me to be about the same.
73,
Don W3FPR
On 10/23/2014 8:25 PM, david Moes wrote:
Good question and answers here I did the same as don suggested up
till recently. I have a Heathkit TX1. I had no receiver until
recently when I got the RX1 to go with it. bit of a crappy
reciever but its still a fun to do the nostalgia thing. The TX1
will crank out a whole lot more power on AM and CW than the K3 and
it warms the shack in the winter. Its not all DX and contests
sometimes its fun to get out the old and tinker. next up is 1930
era two tube push pull UX-245 40m transmitter now were talking
chirp!.
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