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Balanced Line Tuner Plus
The BLT is a simple Z-Match tuner that works from 10-40 meters, designed
by Charlie Lofgren for NorCal. Charlie is probably the number one man in
the world when it comes to Z-Match Tuners. The tuner tunes balanced
feedlines, thus the name "BLT" for Balanced Line Tuner for the
mnemonically-challenged among us. Charlie originally designed the tuner to
go with the SMK-1 and the NorCal Doublet for 40 meters, but when he
delivered his design we found it tuned other bands also. With the NorCal
Doublet, it tunes 10 - 40 meters. We rate the tuner at 5 Watts, but it
will probably be safe at 10 W. The BLTPlus comes with several
modifications including the coax/balanced inputs, and the Dan Tayloe N7VE
LED SWR indicator are built in, and is an absorptive bridge, so you won't
fry the finals as you tune. Great design, by a great designer. All parts
for the tuner are included, including the case. It uses polyvaricon caps.
We have upgraded the tuner to now include all of the connectors and
switches needed to tune balanced lines, coax and long wires. There is no
need to do the mod as on the older cases. This kit has had the mods
incorporated into the kit.
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Supporting Files and Documents
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 BLTPlus Tuner Construction Manual -- 1.5 MB (rev 2.2)
BLTPlus Decal Installation Instructions
"Got mine finished last
night and never have I had a kit that I put together work the first time.
The BLT tuner worked great. Just had the diode in backwards but that was
easy to fix. Doug has made one of the best manuals for a kit that I have
seen. Photos are great and sure help you keep on track. This kit would be
great for the first time builder. It was great to see the LED go out on 40
meters. Doug you have set the standards for a user manual.
A big thanks!"
... 72 Gene N0MQ
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