Ham Radio Transverters (28 to 144)

[PA0PBZ]

We are a producer of those transverters boards.

Actually no. You are just seller. Real author and producer of transverters from your store is Alex UR3LMZ ashatun@mail.ru
And now you stole almost all of his transverters and started producing yourself.

So actually he is the producer, just not the designer...

[serge_m]

Starting from now he produces transverters 50/28, 70/28, 144/28, 222/28 without acception from the author. In 2015 (when he wrote the message) he was just reseller.

Here is the source - http://www.cqham.ru/forum/showthread.php?29083-%CF%EE%F1%EE%E2%E5%F2%F3%E9%F2%E5-%F2%F0%E0%ED%F1%E2%E5%F0%F2%E5%F0-%F1-28-%ED%E0-144-430

[f5dqk]

Searching different articles on the net concerning UT5JCW transverters meases (and particularly the 432 to 28 MHz one), did anybody make real gain/Nf meases (principally Nf) of the total Rx conversion with an NGA (Eaton 2075 or HP8970) ? ? ?
Because I didn't find ansolutely nothing about ! ! !
And more said, did anybody look at the great meas differences obtained between his 3 versions N-2 (with relay + diode mixer), then N-1 or actual N models (with PIN diode switching) ? ?

UT5JCW says that he measures every transverter before shipping, and that in every case the Nf will be less than 1dB.
I did a complete study on it with an another french ham very known as RF measuring specialist.
So I want anybody to exchange about this important subject (and also for every 50, 70, 144, 22 or 432 MHz family, also via direct mail)

Before buying specifically the 28/432 MHz model (exactly 3 successive generations), have a little look at its RF Tx and Rx measurements posted on !
http://f1chf.free.fr/F5DQK/6_Transverters/Transverter%2028_432%20MHz%20UT5JCW.pdf

and also here
https://f6kmx.fr/technique/transverter/etude-du-transverter-28-432-mhz-ut5jcw-par-marcel-f5dqk

Thank you for looking ! ! !