Topband: cutting coax stubs for 80 meter 4-square

[Richard (Rick) Karlquist]

On 6/10/2018 8:01 PM, terry burge wrote:
> All's well that ends well I'm happy to report. K2AV, Guy suggested I check the SO-239 on the Rig Experts AA-170 and I found an open solder joint between the back of the connector and the circuit board. Even with my close in glasses and a magnifying glass it was hard to be certain. So a little solder and 'hop-a-long' rides again! It's working. Will check out the coax stub again to see what the RE reads now.
> Terry
> KI7M

My AA-55 is a different model than yours, but the instructions
have curious warning about not putting too much force on the
UHF connector.  I am thinking that RE realizes they have a
weak mechanical mounting, relying on solder.  I think I will
revise my advice:

1.  Always use a DC block
2.  Carefully attach a short flexible coax jumper and leave
in place.  Calibrate it out.  Then connect the DUT to the
end of the jumper.  No mechanical stress on the UHF.

Rick N6RK