[Test-Equipment] HP-606A Calibration question
Barry
n4buq at knology.net
Mon May 25 23:00:42 EDT 2009
Hi,
I'm new to the list and have been working on cleaning and calibrating my "new" HP-606A. I read a thread on this list a month or so ago about a problem these generators can have where they are out of calibration towards the center of dial (discussion about bending the fins of the tuning cap, etc.).
I set the end points on mine and am seeing this quite noticeably. In fact, on the 530kc - 1800kc range, it jumps out of calibration almost immediately upon moving away from the upper endpoint. Here's what I just measured:
Dial - Actual
530 - 530
600 - 601
700 - 710
800 - 820
900 - 933
1000 - 1040
1100 - 1147
1200 - 1250
1300 - 1352
1400 - 1460
1500 - 1561
1600 - 1655
1700 - 1735
1800 - 1800
Is there a recommended fix for this? I don't plan on bending the tuning cap (it is pristine from 1968) and will rely on a counter for accuracy anyway, but would like to have the dial a lot closer to calibration over the entire range if possible.
Also, does anyone know a source for the BNC panel mount output jack? Mine has taken a slight hit and has a flat spot on it. I don't quite see this style of connector anywhere (it has a threaded ID on the rear that accepts the threaded plug and that includes the female brass connector part). I'd like to replace this if possible.
Thanks,
Barry - N4BUQ
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