03-03-2014, 06:52 PM
(03-03-2014, 04:09 PM)Radio Fixer Wrote: Hi Ian
Please put me down for 2 PCBs if you get some made.
I'll try and remember. I've made a note, but if you don't hear from me in a month or so send me an email or a PM.
(03-03-2014, 04:09 PM)Radio Fixer Wrote: I am currently using the Peter Lankshear designed valved "Mate". I'm interested in yours as using battery may cut the intermod hum.
Just had a look at the "Mate" cct. Doesn't applying modulation in series with the oscillator also produce a lot of FMing?
It doesn't usually matter (my MiniMod 'FMs' very slightly) but if there's another signal on the frequency you can get a 'grumbling' sound if it's FMing more than a few tens of Hz.
It's the price you pay for simple designs without a crystal or DDS generated carrier.
Regards,
Ian
