[Elecraft] (OT) Recommendations for Testing

Don Wilhelm w3fpr at embarqmail.com
Sat Mar 17 15:38:08 EDT 2012


Ed,

No Spectrum Analyzer?  You do have your SDR-IQ that will do that task on 
a narrowband segment.  For a more detailed analysis take a look at 
G4AON's Simple Spectrum Analyzer at http://www.astromag.co.uk/ssa/.  
While the mixer should have a +7 dBm LO input, it should be usable with 
the XG3 0 dBm output (or build up an MMIC board with 7 dB gain.)

73,
Don W3FPR

On 3/17/2012 3:19 PM, Edward R. Cole wrote:
> I will be testing some amplifiers, soon, and would like advice or
> links to info on making IMD and harmonic level tests on HF amplifiers.
>
> I can generate two-tone modulation and monitor spectrum up to 196 KHz
> width with my SDR-IQ, but do not have a spectrum analyzer.  I have a
> scope, power meters, 500w coaxial load, XG3, and a couple DMM, plus
> analog 30v and 30a dc meters..
>
>
> 73, Ed - KL7UW, WD2XSH/45
> ======================================
> BP40IQ   500 KHz - 10-GHz   www.kl7uw.com
> EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-?
> DUBUS Magazine USA Rep dubususa at gmail.com
> "Kits made by KL7UW" http://www.kl7uw.com/kits.htm
> ======================================
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