[Elecraft] mods to K2

[Bill W4ZV]

Vic K2VCO-2 wrote
> This argument will never die.
> 
> But remember the last time you called CQ and a station came back that you
> could hear, but 
> not copy. (I'm thinking CW, but it also applies to SSB).
> 
> You know he is in there, but despite struggling with the narrowest
> possible bandwidth and 
> every trick your receiver is capable of, you just can't get his call as he
> floats in and 
> out of the noise.
> 
> I maintain that even ONE dB matters in this situation.

IMHO 1 dB absolutely matters when signals are at or below the noise floor. 
I've lost several QSOs while activating SOTA summits for exactly the reason
Vic described above.  I find myself wanting my Beverages (at home) or the
K3's APF, neither of which is available on a summit while using my K2.

AB7E made a very useful set of recordings which demonstrates differences in
weak signal copy in background noise.  They also demonstrate why you should
not send at QRQ speeds when signals are weak (an exception to this is when
lightning crashes are prevalent).

http://www.ab7e.com/weak_signal/mdd.html

It's interesting to note significant differences in various SOTA activators
ability to copy my signal from a summit (i.e. Summit-to-Summit QSOs).  I
usually hear other SOTAs well but some are deaf as stones.  I believe this
is due to inexperience by some in copying weak signals.

73,  Bill  W4ZV






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