Message	Date	From	Subject
3007	2009-05-11 04:26:21	dombaines	TFM-335 mixer
Hi all, I don't have any TUF-1 mixers but I have a number of TFM-335 instead (Dayton 2008). I don't have a datasheet but I believe similar to TFM-3. Seems pin 4 is LO, 1 is RF, 2 is IF and others are ground. I lashed together a test rig with the output to a spectrum analyser (USB Oscilloscope). Believe work with LO DC-100MHz (that is as far as DDS VFO will go, might go higher). Please can anyone that knows these comment at all? Especially on the LO and Rf signal levels? 72 Dom M1KTA

Hi all,

I don't have any TUF-1 mixers but I have a number of TFM-335 instead (Dayton 2008). I don't have a datasheet but I believe similar to TFM-3. Seems pin 4 is LO, 1 is RF, 2 is IF and others are ground.

I lashed together a test rig with the output to a spectrum analyser (USB Oscilloscope). Believe work with LO DC-100MHz (that is as far as DDS VFO will go, might go higher).

Please can anyone that knows these comment at all? Especially on the LO and Rf signal levels?

72

Dom
M1KTA