|[AMRadio] BC-348-R HFO Cover Needed|
rrs4 at sti.net
Sat Feb 13 15:30:59 EST 2010
You are correct about the grid cap on the 6K7. The person that changed the
6K7 to a 6AC7 was looking for higher front-end gain. To get it, he
installed a shielded wire from the coil selector box through a hole in the
small chassis plate next to the first RF socket, and from there to the G1
pin on the socket.
----- Original Message -----
From: "Jim Tonne" <tonne at comcast.net>
To: "Discussion of AM Radio in the Amateur Service"
<amradio at mailman.qth.net>; <ne1s at securespeed.us>
Sent: Tuesday, February 09, 2010 7:42 AM
Subject: Re: [AMRadio] BC-348-R HFO Cover Needed
>> the 6AC7 (9000 umhos) instead.
>> Either one far outshines the 6K7 with a
>> transconductance of 1650 umhos. I
>> think I have a 6K7 around, and it would
>> be interesting to compare
> I think the 6K7 has a grid cap on top of
> the tube but the other tubes mentioned
> - Jim W4ENE
> Our Main Website: http://www.amfone.net
> AMRadio mailing list
> Searchable Archives: http://firstname.lastname@example.org/
> List Rules (must read!): http://w5ami.net/amradiofaq.html
> List Home: http://mailman.qth.net/mailman/listinfo/amradio
> Post: AMRadio at mailman.qth.net
> To unsubscribe, send an email to amradio-request at mailman.qth.net with
> the word unsubscribe in the message body.
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
More information about the AMRadio mailing list
This page last updated 11 Dec 2017.