[Hallicrafters] Best Rx?

[Robert Nickels]

On 11/27/2010 7:57 PM, Glen Zook wrote:
> Only 2 that I know of.
Raymond Moore's book lists three variations:

SX-111 Early version 1960-61.  12 tubes
SX-111 Later version  Remarks:  "Adds crystal calibrator to original SX-111
SX-111 MK 1  1961-62.    14 tubes.   Remarks:  "Adds product detector to 
SX-111

So you could have an SX-111 with 12, 13, or 14 tubes.  The chassis would 
either be unmarked (original) or Mark 1.

Since the 101A was in production until 1962 and the SX-115 from '61 thru 
'64,  it seems reasonable to infer that it was not initially intended as 
an SSB receiver, and the product detector was added only after the 101A 
was discontinued.   This gave them a mate for the HT-37 that still could 
be sold for half the price of the 115.

73, Bob W9RAN