[sdiy] voltage-controlled AM radio tuning

[Scott Gravenhorst]

A note about the AM (American band) radio: I used to play with crystal sets as a kid
and it was quite standard that the variable capacitor for tuning the circuit was a
365 pF job.  That's a little big for varactors, but as been said they can be paralleled.


Tony Rolando <tony at makenoisemusic.com> wrote:
>I had been wanting to do a VC-radio as a euro rack module. I've got a 
>whole bag of varactors to test/ experiment with... not had time yet. In 
>any case, I thought I'd mention this IC, because it would be pretty 
>simple to VC, however looks like FM only and expensive:
>
>http://www.futurlec.com/cgi-bin/search/qty_price.cgi?part_no=TDA7000
>
>Available though, and it might be a pretty quick way to get something 
>like this going!
>
>Tony
>
>
>
>
>
>alfred.pear at gmail.com wrote:
>> anyone here ever endeavor to create a voltage-controlled tuning
>> mechanism that spanned the Medium Wave/AM band?
>>
>> i am concerned that a varactor will not provide sufficient range..
>>
>>
>> -a
>> _______________________________________________
>> Synth-diy mailing list
>> Synth-diy at dropmix.xs4all.nl
>> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>>
>>   
>
>_______________________________________________
>Synth-diy mailing list
>Synth-diy at dropmix.xs4all.nl
>http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>

-- ScottG
________________________________________________________________________
-- Scott Gravenhorst
-- FPGA MIDI Synthesizer Information: home1.gte.net/res0658s/FPGA_synth/
-- FatMan: home1.gte.net/res0658s/fatman/
-- NonFatMan: home1.gte.net/res0658s/electronics/
-- When the going gets tough, the tough use the command line.