[HBR] HR-67

[Sandy and Kees Talen]

Relative to finding parts....BG Micro had 3 section FM tuning capacitors
which measure 5-25pf per section and are a "good" substitute for the 
specified variable. Also BC 453 IF transformers are 85Khz, can be 
moved up to 100Khz if you want (or 50Khz), have an adjustable coupling
via that micarda rod out the top ("in" is overcoupled), they are readily 
available, and in my opion (and using the spectrum analyzer) are better
than the JW Miller IF transformers (higher "Q", ceramic or mica base, air
trimmer tuning, excellent shielding, top adjustment, variable coupling,
etc).

Also having access to a good Q meter is essential for selecting coil
form material, coil wire, coil doping, etc ....if you really want to peak
"Q".

73s  Kees K5BCQ