[Hallicrafters] Substitute antenna coils

[Philip Atchley]

> There's another thing, though as applies to the MW band on the SX-71.  I
> see no mention of it in the manual, but it looks to me on the schematic
> that a wafer on the bandswitch bypasses the first mixer on band one.  Is
> it single conversion on BCB and dual on the top four bands?

Barry
Yes, the set is single conversion on the lower 2 bands.  But that shouldn't
really affect sensitivity any as you still have an RF amplifier, then a
mixer followed by 3 IF amplifiers.  A decent tube line-up in any set.  I
suspect the gain reduction on the bcb is done in the front end coils.  If it
was done intentionally they may have got carried away (though I won't know
for sure until I remove/inspect and replace that coil).

73 de Phil  KO6BB
Loving home provided for wayward Boatanchor Receivers
k06bb at elite.net
Merced, Central California
37.18N  120.29W  CM97sh




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