[Hallicrafters] Best Rx?

[Glen Zook]

Carl:

Are you sure that your SX-111 is a Mark II.  I don't know of any SX-111 Mark II receivers ever made.  The SX-111 Mark I had both a product detector and a "damp chaser".

The original SX-111 was never called the Mark I.  The second variation was called the Mark I.  The manual for the SX-111 with the product detector and the "damp chaser" is definitely marked SX-111 Mark I.  The "damp chaser" is basically an 8 watt 2,000 ohm "flat" wire-wound resistor that has a second fuse, 0.25 amp, in series with it.  The AC line into the receiver was not fused!

The manual for the SX-111 Mark I is on BAMA at

http://bama.edebris.com/manuals/hallicra/sx111mk1/

Glen, K9STH

Website:  http://k9sth.com


--- On Sat, 11/27/10, Carl <km1h at jeremy.mv.com> wrote:

Mine is a Mark 2 and the thin sheetmetal chassis still has no strength. At least they added a "damp chaser in the Mark 2A which was also needed in the SX-101's. While it was hot on even 10M the 6CB6 RF amp is a sharp cutoff and it overloads badly with their AVC attempt by changing the plate voltage on each band. Only one other stage has AVC.
 
It looked good in the ads and I almost bought one but after seeing how tiny it was I spent the money on auto performance parts and flogged the HQ-129X until the Drake 2B came along after I got out of the Navy. In the mean time I had a product detector in the BC-453 and the SSB performance was about as adequate as needed then using a 10B and HB GG amp using 1625's.