Uses for Collins Input Transformers

[portersage]

Hey all, I came into a handful of these old Collins / Rockwell frequency generator modules, and am hoping to use the transformers for something. The input is 1.5k:60k and output (I think) is 27k:600. Does anyone have any ideas for any tube based projects these might work in? I’m pretty new to doing scratch builds, so pardon my ignorance to things like this.
Thanks!

 

[emrr]

1st step is to see if response is substantially better than quoted.

 

[portersage]

1st step is to see if response is substantially better than quoted.

Ah for sure, definitely a good call. I did wire one up into a tube mic preamp I built recently just to see what it did. The 600:27k does work at the input (but is very quiet, since the circuit is based on different values), it’s definitely very dark sounding, but I also kinda dig that. I like funky sounds, so by no means looking for the highest fidelity possible. I’ll try and hook up a scope to see what the response actually is though.

 

[13engrsapper]

Scope them. Lots of military/aviation transformers are made for or marked for very limited speech oriented transmission. They may be full range but marked lesser to meet a particular specification- or they may be wound to stink at full range, actually matching the specs to save money. Try different power levels when you test.

 

[Neperdun]

at least You can do the tube di-box.