08-23-2020, 06:39 PM
With the smoke and horrible air quality here, I spent some time on alignment of the radio this morning. Another odd question has been answered. I worked on alignment of this set when I received it a couple of years ago. All seemed to go well, and I put down to drift, the fact that it needed the "Fine" tuning control to be adjusted to get the set to be spot on frequency e.g. zero beat on WWV.
This always puzzled me, because there were other reasons this didn't seem quite right. What was more strange, the USB and LSB modes seemed to be off by the same amount, so the problem couldn't be an error in the BFO frequencies, could it?
Yes - it could!! You see, I had been using one of the inexpensive frequency counter modules - discussed in a thread on test equipment a little while ago. Today, it's bad habits were exposed by my "new" counter. Both BFO adjustments were off by a good 300 Hz. Aligning with the new counter, the radio is spot on frequency
This always puzzled me, because there were other reasons this didn't seem quite right. What was more strange, the USB and LSB modes seemed to be off by the same amount, so the problem couldn't be an error in the BFO frequencies, could it?
Yes - it could!! You see, I had been using one of the inexpensive frequency counter modules - discussed in a thread on test equipment a little while ago. Today, it's bad habits were exposed by my "new" counter. Both BFO adjustments were off by a good 300 Hz. Aligning with the new counter, the radio is spot on frequency
I don't hold with furniture that talks.
