Hi Manny:
Are you sure that when you are transmitting into the Dummy load that the
output is on the frequency you think? Check it. The dummy load will
happily load the Tx on ANY freq it puts out...the tuned antenna only one
or two places--so if the output is mixing improperly and off freq, it
wont load properly.
Put a scope on the output or a freq counter or a general coverage Rx
while on the Dummy load.
FWIW
Curt
KU8L
On 9/14/2013 7:26 PM, Manny Miyares wrote:
Hi Guys,
I'm just back into radio this year and find myself gravitating to the
older gear. I have several "C" pieces along with an L-4B (have to have
one of these). I bought several broken and find a bad resistor or tube
through most, however I have a T-4XC that's giving be problems. I can
tune up into a dummy load fine, however on the G5RV SWR is through the
roof. Keep in mind I have an MJF Multi Port Antenna switch and have my
MFJ Antenna Analyzer on a transmitter port and switch to it to match
the antenna through my MN-2000 which feeds into my amp and meter. I
can get a 1:1 match through the antenna tuner with the Analyzer, flip
to one of two radios, my TR-4C, and 4Cw and keep the low SWR. Even my
Yaesu FT-897D is happy with this configuration. When I switch to the
T-4XC the SWR jumps to 5+ to 1!!! (Yes, I've checked the patch cables)
Holy Smokes Batman!!! So into a dummy load it's happy, but when I move
to a matched antenna it goes nuts. I can't even match the T-4XC direct
using the tuner and way off where the analyzer first tuned the antenna.
Any pointers would be greatly appreciated.
Thanks guys,
manny- wd5bjr
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