Dave,
That is an excellent method of achieving a 1:1 SWR with an unknown (or
questionable) dummy load. Thanks for the reminder. Just be aware that
the SWR=1 condition is frequency sensitive - the tuner must be retuned
if the frequency or band is changed.
73,
Don W3FPR
David Wilburn wrote:
If all else is well, then consider how you are measuring it. As Don has
pointed out before, the internal power meter expects a 50 ohm load.
After trying several configuration that showed 6w on 10m, I checked the
dummy loads. All three were showing 1.2 swr with an analyzer. I then
connected to my MFJ-949E with internal dummy load, and I connected so
that the manual controls were in line, and adjusted for minimum SWR
while hitting the tune button. When I did this and used the internal
power meter, it showed 12w.
None of my measurement setups were perfect, I was mainly looking at the
spread of the readings. But when I used the setup described above, all
my readings, on all bands, were above 12w. When read with external
power meters, they fluctuated quite a bit more.
David Wilburn
[EMAIL PROTECTED]
K4DGW
K2 #5982
William M. Spaulding, SR wrote:
Folks,
I'm having a real struggle getting 6 to 7 WATTS on 28 Mhz while all
other all other bands come up with a number well in excess of 10 Watts.
Has anyone experienced this problem and was able to solve it? I'm
suspecting low pass filters that are not coordinated to the 10 Meters
Caps, if you can get my drift. I can't come up with a reason for
this. In fact, it may make 10 Meters useless for some modes.
Help?
Bill
NA7Y
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