[Elecraft] OT: Effect of mechanical connectors & sampling units on the antenna line

GRANT YOUNGMAN ghyoungman at gmail.com
Wed Jul 20 16:15:42 EDT 2016


No …. not close.  You can talk to Rob about his tests, but that isn’t what he does.  And  any sensors between the signal generator and the radio (or your antenna and the radio) aren’t going to materially change anything about the radios performance.

How many tenths of a dB are you concerned about?  :-)

Grant NQ5T



> 
> 
> I began my question-subject with a curiosity on how the professional
> 
> evaluators test & report on modern transceiver performance such as
> 
> sensitivity, etc.  At the same time, I have been looking at some Elecraft
> 
> products: the W2, the P3 TXMON, and the like.  My instinct tells me
> 
> that no ultimate best figures can survive on an input line where there
> 
> are sampling units & PL-259 couplings, short lengths, PL-259 to BNC
> 
> adapters, etc.  So I'm thinking that when Sherwood Labs specs out
> 
> the K2 and the K3, they probably:
> 
> 
> 1.  Have the rig on a wet cell battery;
> 
> 2.  Except for the signal generator line coming, the rig is probably inside
> 
> an EMF shielded cage, etc.
> 
> 3.  The only thing going into the transceiver is a single signal cable connection.
> 
> 
> Am I at least close to being right ?
> 
> 



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