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Silvertone 2014, 2015, 2016 Schematic
1/4/2006 11:17:46 PMStan L
I am having problems trying to find the alignment procedure for this series (I have the 2016). The schematic is intact inside the case, but not alignment procedure. I ask because it has a triple gang variable condenser instead of the usual two gang. This model seems to be missing from all my usual sources. Any help appreciated!
1/5/2006 5:29:58 PMThomas Dermody
I cannot find the schematic on this web page. I will assume that this radio has a primary RF amplification stage prior to the oscillator section. The three gang condenser has one gang for the oscillator, one for the normal antenna stage associated with the oscillator, and one additional section for the RF pre-amplifier. I am assuming this to be your set lay-out, and I'm assuming that the condenser is used in this way.

A simple procedure which may work well for you is as follows. If your procedure differs somewhat from this, you may find that it yields better results, when you finally come across your procedure.

Align your IF transformers. Hopefully you know the frequency. If not, hopefully it's either 455KC or 456KC. Some used 465 KC, and some used lower frequencies.

If your oscillator section has a padder trimmer (trimmer which goes in series with the oscillator coil), set the dial to a point 10 KC below the maximum frequency. Adjust first the oscillator trimmer until this frequency comes in at this point. Then adjust both antenna trimmers for maximum output. If no padder is present, you may try adjusting the oscillator as described above and then the antenna trimmers at 1400 KC. You may also try aligning the oscillator at 1400 KC if aligning it 10 KC below maximum frequency does not yield accurate tuning

If your oscillator has a padder condenser (trimmer which is wired in series with the oscillator coil), tune down to 600 KC and then align your padder until the 600 KC signal comes in. Recheck both ends of the dial and check station alignment in between. If stations don't align in between when the end stations line up, most likely this tuning procedure is incorrect, or perhaps you are using the wrong intermediate frequency.

Follow the same procedure (without readjusting IF transformers) for the short wave bands, if present. Aligning these bands is a bit more difficult. Adjusting the antenna trimmers for these bands may not simply increase signal strength, but may also move the signal around, making re-tweaking of both the oscillator and antenna trimmers for these bands necessary.

Thomas



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