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Author Topic: Beware of all transverters from Serge UT5JCW  (Read 3276 times)
F5DQK
Member

Posts: 2




Ignore
« on: December 12, 2017, 10:52:07 AM »

More about his 28/144 and 28/432 MHz transverters I'd measure on the bench--> both are real catastrophes because :
- in Rx mode the measured Nf is between 8 and 10 dB (very faaar from his 1dB claimed Nf)
- in Tx mode they are oscillating very simply
- in both modes they are intermodulating with many spurious up to -32dBc

Sure they are low-cost, but nethertheless far too expansive for that prices
And after asking him 3 years ago about their Rx Nf, his only asnwer was that every ham was satisfied with - - not a very scientific approach - -and so as potential buyer he did then directly blacklist me on eBay Angry

For the moment I can only speak about his 144 and 432 MHz transverters, but suppose now it is exactly the same for his 50, 70 and 220 MHz ones

The complete measurements can be seen in the PDF on these Websites :
https://f6kmx.fr/.../transverter/etude-du-transverter-28-432-mhz-ut5jcw-par-marcel-f5...
and also
f1chf.free.fr/F5DQK/...Transverters/Transverter%2028_432%20MHz%20UT5JCW.p...

So before buying anything, pse read first on of both PDFs ! !   Angry Angry
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