This C-band LNB is a bit crusty. But might even work!
Should be usable for seeing 3.4GHz stuff on the spectrum analyzer, even if the DRO in this thing is not super stable.

Has anyone converted these to 5.7GHz?
The LO is 5150MHz
Shouldn't that just be ripping out or replacing some filters?

I wonder if it would upconvert with sane effort.
Gain is much cheaper and less fiddly on 3.4GHz and 5.7GHz than 10.3GHz.

#cband #3400MHz #9cm #6m #5760MHz #microwaves

I also got two "full" C-Band LNB's that I should test.

#cband #hamradio #3400MHz

The test setup looked like this.
All SMA's were properly torqued down as well.

Oh well, looks like might have bought a project instead of a transverter.

#hamradio #microwaves #3400MHz

That does not look right at all.
23dB attenuation in between the transverter and spectrum analyzer.
The attenuators are specced to 6GHz and 11GHz, so no problem there either.

TX gain maxed out and hitting the transverter with +20dBm on 144MHz and this is what I get.

#hamradio #9cm #3400MHz #microwaves