I don't know the technical details of how the BCC565 works, but I
have been loading up the rain gutter on my house on all amateur
bands from 80M-10M with the BCC565 attached to my BCC39B and it
tunes up just fine, the rain gutter is most definitely longer than
1/4 wave on 17M which is the band I use most for contacts with
friends in teh hfpack group.The ATU is putting full
power to the rain gutter and seems to work about as well as my
dipole.Interestingly the rain gutter with a 31' wire counterpoise
attached to the ATU ground works very well on 75M as a NVIS antenna.
My BCC39B came with the centerloaded whip, I would like to find the
other non- loaded whip to try with it or another Racal gooseneck to
modify for use with homebrew whips, hams sticks,buddistick ect..Very
much like the ATU in my VX-1210 the BCC565 seems to be able to match
just about any unbalanced antenna or piece of metal that I try to
load up with it.
I have found that the packframe makes a better ground plane on 20-
10M than using a wire counterpoise.
Mike at CR told me he had the manual for the BCC565,I will try to
get him to make me a copy when they return to work this week.If I
can get a copy I'll scan it and post it to the group files both here
and in the BCC-39 group.
I don't have a difinitive answer about what the BCC565 is meant to
be able to do, but experimentally it has been doing a fine job of
loading longer than a 1/4 wave antenna. I am cafefull not to try to
tune multiples of 1/2wave with it,I would expect the impedance of a
half wave end fed wire to be much to high for the ATU,
cheers,
John
K6ERO
--- In Racal-manpacks@..., "Howard Small"
<howard@s...>
wrote:
Can anyone tell me authoritatively if the BCC565 ATU that comes
with
the BCC39B HF set can tune longer than standard whips or a
random
length of wire?
