> anyway, as I was saying we used to have either a manually adjusted
> preselector in front of the RF amp, or one that was ganged to the main
> tuning dial and tracked across the band... Some of the better receivers had
> 2,3 and even 4 cascaded tracking filter sections in the front end... Tuning
> the multiple variable caps/sections on the filters so they tracked properly
> was a job...
> I have the MK-V and the preselector they call VRF does work well...
Denny,
I agree with your comment on the VRF in the Mk V. It's interesting
that the very expensive micro-tune filters in the newer Yaesu radios
don't seem to me to work as well.
Which of the older receivers had 2, 3, or 4 cascaded tracking filters
in their front ends? These must have been upscale Collins or military
receivers.
Brad, KV5V
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