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| Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment. |
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23rd Feb 2010, 1:26 pm
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#1 |
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Retired Dormant Member
Join Date: Jun 2009
Location: Leesthorpe, Leicestershire, UK.
Posts: 15
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Help with Eddystone 640
Hi,
Does anybody know the PF ratings for the BFO and phasing variable capacitors in the Eddystone 640? - Tim |
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23rd Feb 2010, 4:25 pm
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#2 |
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Dekatron
Join Date: Aug 2007
Location: W.Butterwick, near Doncaster UK.
Posts: 8,932
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Re: Help with Eddystone 640
try Eddystone User Group site,plenty of circuits.
Regards David GM8JET |
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23rd Feb 2010, 4:29 pm
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#3 |
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Dekatron
Join Date: Aug 2007
Location: W.Butterwick, near Doncaster UK.
Posts: 8,932
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Re: Help with Eddystone 640
Yes its on there ,just downloaded it for my 640 so if stuck PM me and will attach
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23rd Feb 2010, 5:06 pm
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#4 |
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Pentode
Join Date: Dec 2008
Location: Redditch, Worcestershire, UK.
Posts: 196
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Re: Help with Eddystone 640
I believe some of our members have answered Tim's query on the EUG forum. The circuits for 640 dont show the value of the BFO capacitor but general thinking is that it is about 30pF
Chris G0EYO EUG Webmaster |
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23rd Feb 2010, 5:08 pm
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#5 |
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Retired Dormant Member
Join Date: Jun 2009
Location: Leesthorpe, Leicestershire, UK.
Posts: 15
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Re: Help with Eddystone 640
Okay David, I will take another look. I was unable to see a value in the circuit diagram.
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23rd Feb 2010, 5:15 pm
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#6 |
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Retired Dormant Member
Join Date: Jun 2009
Location: Leesthorpe, Leicestershire, UK.
Posts: 15
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Re: Help with Eddystone 640
Thanks Chris. Yes, I'll experiment with 20pF or 30pf from the recommendations on the EUG forum.
Thanks to all. Tim |
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