[UK-CONTEST] Butternut HF9V
john lemay
john.lemay at which.net
Fri Jan 10 15:12:28 EST 2003
Hello chaps
A little off topic maybe, but bear with me .......
I have put up a second hand Butternut HF9V. It's in good condition and came
with a copy of the installation notes but the drawing was a bit unclear.
I get a good match on 3.5, 7, 10, 21, 24 and 28MHz. By that I mean less
than 1.5 to 1 swr. I appreciate that a good match is not everything, but
it's still a good place to start.
On 14MHz the best match is about 1.6 to 1
On 18MHz the best match is only 2.2 to 1
I'm a bit puzzled why a couple of the bands should be so much poorer than
others. I have yet to make a thorough check of clean connections (snow
stopped play) and I realise this is vital.
Can any other users of this antenna confirm (or not) that a good match can
be obtained on all bands, and perhaps offer any further suggestions as to
where I can look for improvements. Is it possible I have mixed up two of the
coils for instance; some are very similar and the poor drawing does not give
much away - perhaps a confirmation of the number of turns for each coil
would help me ?
Regards
John G4ZTR
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