[Hallicrafters] HA-10, Does It Go Below

[Harry Vaught, KT4AE]

There's a chart in the SX-117 manual showing what crystals to use for 
any frequency from 85kc to 30mc except the IF's and immediately adjacent 
frequencies.

The disadvantage is that there are only four auxiliary crystal 
positions, although I suppose you could substitute crystals in any of 
the standard band positions.  Might be confusing, though.

Anyway, the first two crystal positions are for signal frequencies below 
20 meters and the second two for frequencies above 20 meters.  Since 
each crystal covers 500kc, you need two positions for 500-1500kc.  So, 
you can't have crystals for the whole BCB and 30 meters at the same 
time.  You could have, in positons 3 & 4, crystals to cover 17 & 12.
I finally wondered why, with other general coverage receivers sitting 
around, I wanted to put the SX-117 on the broadcast band anyway. 
Because it's there, I suppose.

You could have crystals for 60, 30, 17, & 12 in the four positions. 
Then you'd be covering everything except 160.  I've got the 60 meter 
crystal, but my antenna won't do it and I'm leery of the channelization 
on an old analog type device.

Harry, KT4AE
Maryville, Tennessee