03-12-2016, 11:31 AM
(This post was last modified: 03-12-2016, 11:40 AM by pwdrive.
Edit Reason: correction
)
(03-12-2016, 11:03 AM)Old Sparky Wrote: Would it be possible to use a conventional double-tuned IFT in the 1st. IF position , by only connecting one coil? I realise that the unused coil may (will?) have an effect on the capacitance/inductance of the transformer, and I don't know whether one or both the IFTs need replacing, but a single coil IFT may be difficult to source, unless one can be salvaged from a scrap set. When Denco IF Transformers were available, it wouldn't have been a problem, but it's a different story now!
Don't see why not, so far as I can make out the target inductance needs to be approx. 930uH, You could try removing the unused winding on a double tuned replacement to avoid any possible stray resonance effects.
Lawrence.
