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Trouble Aligning 116B-121 IF
JWD
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Posts: 5
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Joined: Sep 2012
City: California
#5

10-01-2012, 07:40 PM
Hi Steve,

I am able to peak the 1st IF. I'm having trouble with the 2nd Detector and 2nd IF. I'm using an Eico 324 which has been calibrated using a radio. I then checked a few other radio stations to see how well it tracked across the frequency band range and noticed some error.

Since I don't have a frequency counter yet, I took some data points of the frequency error across the Standard Broadcast band and plotted it on an excel spread sheet to give me a guestimate of offset for 460kHz, (about 7kHz offset). I set the 324 accordingly and did an alignment.

I would think even if the reference frequency was off a bit there would be enough adjustment in the trim caps to peak the output voltage.

John
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Messages In This Thread
Trouble Aligning 116B-121 IF - by JWD - 10-01-2012, 12:11 AM
RE: Trouble Aligning 116B-121 IF - by TA Forbes - 10-01-2012, 12:21 AM
RE: Trouble Aligning 116B-121 IF - by JWD - 10-01-2012, 04:07 PM
RE: Trouble Aligning 116B-121 IF - by Steve Davis - 10-01-2012, 05:45 PM
RE: Trouble Aligning 116B-121 IF - by JWD - 10-01-2012, 07:40 PM
RE: Trouble Aligning 116B-121 IF - by TA Forbes - 10-02-2012, 04:04 AM
RE: Trouble Aligning 116B-121 IF - by codefox1 - 10-02-2012, 02:39 PM



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