[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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