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Author Topic: Icom IC-7410 hot switching problem...am I missing something?  (Read 1724 times)
G4AON
Member

Posts: 995




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« Reply #15 on: June 08, 2017, 12:20:21 AM »

Quote
Recently put an IC-7410 in-line with an ALS-600 amplifier and am seeing hot switching
when I first hit the key (using semi-breakin).

 How did you determine this?
That's why proper hams have oscilloscopes. Even a cheap dual beam scope (or the solid state equivalent) will show what is happening on key down. In addition to lousy timing, many transceivers have hopeless ALC control that outputs a full power spike on key down when the output is set for less than full power.

Unfortunately, most reviews in QST fail to test for this common problem.

73 Dave
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WB4IVF
Member

Posts: 108




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« Reply #16 on: June 08, 2017, 05:17:23 AM »

The IC-7410 (including mine) had an overshoot problem (discovered by Adam Farson during his testing and described on his web site), which was fixed free of charge by ICOM.  Serial numbers of affected rigs were posted in Adam's ICOM 7410 Yahoo group.

Howard
« Last Edit: June 08, 2017, 05:19:32 AM by WB4IVF » Logged
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