Joe -
Curt has the right idea. Be sure sure you have the correct cable in the
INJ position, not all had the metal tags, some had a paper wrap. Also
the INJ cable had a different color insulator in the phono jacks.
Anyway once you have the correct cable tweak up the INJ trimmers on both
units with them cabled together. Use the alignment procedure in the
manual, with the specified frequencies. DO NOT use a metal alignment
tool, even a momentary short from trimmer to chassis can damage the
transmitter. If necessary, slip heat shrink or tape over a metal
screwdriver so that only the tip is exposed.
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
Curt Nixon wrote:
Hi Joe:
All of the original cables look pretty much the same (gray) but one of
them, the inj cable came with a small metal tag on it to identify it
for the inj connection. It is different, low capacitance cable.
But, if you described the rx situation right, it seems as though the
T4 PTO is weak in both situations regardless of it going through the
cable. Unless it is just getting loaded by the cap in the cable.
What does it do if you unplug the inj cable at the t4x end and try to
tune it up?
Curt
KU8L
Joe Loverti wrote:
When I tune up using the T-4XB PTO on 40 meters, I'm getting about 60
watts maximum. When I tune up using the R-4A PTO the power output is
95+ watts maximum. There's also about a 10 db difference in receive
between the two units, the R-4A being the stronger receive of the
two. I am using original Drake interconnect cables between the two
units. I'd expect some difference between them, but this seems
excessive. Any thoughts?
WW8X
Joe
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