[Hammarlund] IF alignment on an HQ-180
Bob Young
youngbob53 at msn.com
Wed Aug 31 21:36:40 EDT 2005
Does anyone here experience with this? I'm trying to use a Radio Shack digital multimeter, while the manual says to use a VTVM, I have one but don't trust it. I have the meter connected to the junction of L8 and C44, and the other on ground like it says and I'm getting a straight -0.275 VDC no matter what I do. I tried the 60 kHz. first, varied the generator signal and so on and the multimeter reading never varies, the manual says to keep it at -5 VDC or below. I then tried the 3.035 mHz. IF alignment, same thing. The reason I did that was because it was a real son of a gun trying to get the probe on the the junction of C28 and T5 and thought perhaps I wasn't getting a good connection, it took me about an hour to get it clipped on. But the 3.035 mHz connection is a two second affair and I know I'm in the right place, generator is ok and I have them on frequency counters
The book says to put the calibration reset in the center, is that something on an HQ-180A?
Thanks, any help will be appreciated,
Bob Young
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