VXO's

---------

From: John Seboldt (rohrwerk@pconline.com)
Date: Sat Nov 02 1996 - 13:31:38 EST


7N3WVM's dual-crystal VXO is very interesting, and raises lots of
questions and gives us all lots of room to experiment.

It reminds me of an eyebrow-raiser in QST a while back: the
"Rock-Bending Receiver", Aug. 1995. He violated conventional wisdom and
recommended FT-243 crystal holders - everybody else says they bend less
<!>. He uses one of those dual polyfilm variable caps (about 250 pF per
section from Mouser), both sections paralleled. Inductance: 22.7 uH
total, he recommends breaking it into 2 10 uH and one 2.7 uH (molded
chokes). And he claims 25 kHz tuning range with great stability, and up
to 50 kHz swing possible.

Anybody tried this one?

John Seboldt
rohrwerk@pconline.com
http://www.pconline.com/~rohrwerk/k0jd/


Search QRP-L Archives

[ QRP-L Archive | ]
[ 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 ]

---------

This archive was generated by hypermail 2b29 on Fri Jun 02 2000 - 11:31:16 EDT

kd4ab@kd4ab.org