Re: power output ... ATS-4B
- Just got done with the ATS-4B on the 29th, and had a great SKN QSO
for 30 minutes on a 9V battery!!! Try that with any other QRP rig
and see how long it goes... Thanks, Steve, for a great rig!
At Fred's encouragement, I measured my power output and current draw
on each band. This is straight off the bench, with the coils wound as
close to evenly spaced as I could get them. No tuning yet!
(I had to build my NorCal QRP wattmeter so I could get these "highly
accurate" readings. :-) This was a fun weekend!)
ATS-4B power out and current in @12VDC input voltage:
80M - 5.7W @ 600mA
40M - 5.7W @ 700mA
30M - 5.1W @ 580mA
20M - 4.8W @ 800mA
17M - 4.3W @ 500mA
ATS-4B power out and input voltage on 9V battery (no current measurements)
80M - 1.8W @ 8.3V
40M - 1.8W @ 8.3V
30M - 1.7W @ 8.2V
20M - 1.7W @ 8.5V
17M - 1.6W @ 8.5V
Looks like I might get some benefit on 40M and 20M by tweaking the
coils, since the current seems a bit high for the power output.
73 es HNY,