Re: Modest Proposal/SMT rig

---------

From: John F. Woods (jfw@jfwhome.funhouse.com)
Date: Wed May 17 1995 - 13:23:54 EDT


It occurs to me that surface mount would adapt itself pretty well to a
modular experimental rig, something like the 10MHz/18MHz receiver in
QRP Classics and the '92 Handbook, but with modules about a quarter the
size or less (think of it as large homebrewed ICs).

This idea has the advantage that someone could simply step forward with, say,
a surface mount VFO or audio amp design for people to reproduce and play with.

Hmm. DigiKey has a surface mount LM1877 (dual power audio amp), and a surface
mount LM1496 mixer. Hmm, no obvious candidates for a PA transistor in SMT,
but they do have varactors in surface mount (Zetex FMMV109CT looks like
a fairly good choice, ~30pF nominal max and a 5.0-6.5 ratio over 30 volts).


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 - 11:28:05 EDT

kd4ab@kd4ab.org