[Elecraft] P3 New LVL Cal Function (Beta 0.41)

[Bill W4ZV]

Stan Gibbs wrote:
> 
> I'm curious what the nominal range of transfer gain is that we might
> expect to see.  Mine is around -18 db.  What does this number mean,
> anyway?
> 

Transfer loss is loss from the K3 ANT input to the KXV3 IF OUT.  -18 dB
sounds high...as though you may have an older unit which has not been
modified (easy to check by removing the bottom front panel and inspecting
R8):

http://www.elecraft.com/K3/mods/IF_Output_Buffer_Gain_Mod_Rev_A.pdf

I have two K3s (#2183 and #4717).  The first was modified by me (R8 = 13k
SMD) and the latter came from the factory with the change implemented in
production.  Both of mine measured -7.3 dB but other Field Testers reported
as much as -14 dB.  BE SURE you follow the instructions below exactly since
these can affect the measurement:

1.  Turn off PRE, ATT and SUB.
2.  Carefully tune the VFO for the signal peak (which may vary by ~1.5 dB
depending on VFO setting).

73,  Bill

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