[ARC5] BC-453 or R-23(*)/ARC-5 on 600 meters...

[Leslie Smith]

  Hi Ken,
  I'm surprised to read your words "they lack the necessary stability
  for 'extreme accuracy' modes.
  What degree of stability do you require?
  I'm going to attach my old-fashioned frequency counter to the L.O. to
  measure drift in my ATA beacon band receiver.
  My set "settles down" very quickly after it's switched on - SSB is a
  breeze with a simple converter in front of the "R-23".  (It's an ATA
  not R23!)
  I'm particularly interested because I run my set from a 60V regulated
  B+ supply, and (at that voltage) the 'tubes' run cool.
  (Cooler than Bob Dylan)

  The limit to sensitivity for the beacon band receivers lies in (a)
  atmospheric noise.
  If it's "there" an ATA set will hear it on MF/HF.  
  The designers from the mid-30's knew their stuff (and all done with a
  slide-rule too!)
  They were really "hot".

  73 de Les Smith
  vk2bcu at operamail.com


On Mon, Aug 4, 2014, at 03:14, Kenneth G. Gordon wrote:
> The ONLY problem we have run into with using the subject receivers on 600 
> meters is that they lack the necessary stability for the
> "extreme-accuracy" 
> modes, like WSPR (look it up).
> 
> But for normal communications modes, they are simply superb.
> 
> Ken W7EKB
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