08-26-2014, 08:44 PM
Well Mike, a loop is a perfectly fine antenna when applied correctly. In practices later than the Model 60 the tuned loop replaces the on-chassis antenna coil and is tuned by the gang capacitor. That is what is suggested in the Radio for Millions article.
I'll pontificate a bit and say its awful hard to get decent tracking with this method. I tried my damndest to sub one for an antenna coil and although it 'worked' it didn't work satisfactorily. Two main gotchas are the cut of the tuning gang and the self-capacitance of the coil versus the loop.
The photo suggests that this is simply a loop from another radio connected to the antenna terminal. Not the same thing at all. In this sense its nothing more than a wad of wire.
There are ways to couple an ersatz loop to a 'random-wire' input but nothing shown suggests that such was done.
I'll pontificate a bit and say its awful hard to get decent tracking with this method. I tried my damndest to sub one for an antenna coil and although it 'worked' it didn't work satisfactorily. Two main gotchas are the cut of the tuning gang and the self-capacitance of the coil versus the loop.
The photo suggests that this is simply a loop from another radio connected to the antenna terminal. Not the same thing at all. In this sense its nothing more than a wad of wire.
There are ways to couple an ersatz loop to a 'random-wire' input but nothing shown suggests that such was done.
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