From: Alan Kaul (firstname.lastname@example.org)
Got the Norcal 40 finished today--and love it!
Slight problem -- I used a MPF102 I had on hand for the VFO --
turned out to be extremely dead. Replaced that, and the
rig worked right off! I did improvise the VFO coil, however.
Parts supplier said on the phone he had the T-68-7 form.
I confirmed order by mail and sent a check -- spelling out
the T-68. He shipped me a T-50. So rather than hassle it (I
suspected he didn't have any T-68's on hand) I used the
handbook formula and discovered about 70-turns on the T-50
should do the trick. I wound one and using #28 wire, filled
the form at about 55-turns. So dropped down to #30 turns, put
70 turns on the form and it fired right up. I should
have used 71, because I can only get down to about 7.005 mHz!
Anyway, I trimmed it to operate 7.009-7.043 and am using the
7.023 spur to remind me I'm in the band. I may add the
trap mod suggested by Wayne.
Xmtr loads to 1.5-2.0 W using nominal Nicad pack putting
about 13.8 V. Listened late tonight, hear some East
Coasters and Central States and Canada folks, and a
couple of JA's. Plus XE1. Couldn't work anyone tonight
though -- will try again tomorrow and/or in Saturday's contest.
Terrific design WAYNE. Rcvr sounds great. I like the
smoooooth tuning dial -- almost like a big flywheel.
Mods probably to follow (LED battery on, maybe a keyer,
maybe frequency switch).
My QRP inventory then:
Icom 725 and Kenwood TS-430 with the homebrew blackbox
that'll use negative voltage to ALC input to drop power
output to milliwatts
Several Two-fers (trying to modify one for 3-band operation--
anyone do that yet? Or won't it broadband well??)
Herring Aid 5 rcvr (circa 1976) [QST]
Universal DC Rcvr (circa 1979) [QST]
Universal Xmtr (circa 1980) + 'Barbados' Superhet [QST] in a
single box which has seen action in KL7, KH6, 6Y5, JY9
(worked about 85 countries w/ 5 Watts from JY -- where the
callsign was worth about 10 dB!!!!)
And uncompleted versions of Neophyte Rcvr, Kanga LCK Rcvr (which I'm
trying to tri-band in combination with one of above mentioned
Radio Shack's 10m xcvr (forget the designator)
Converted Lafayette SSB-75 (ex-11m rig now on 10m!)
Plus a shack full of dreams!
Hope to see you Saturday! 72 de alan
[<Alan Kaul, W6RCL>] email@example.com
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