The first question to ask is what is the operating goal for 160.
1) Local net or rag chew with his buddies.? In that case use the
existing vertical assuming the AATU can match it is enough . Might have
to a add lump loading coil at base to get it the point AATU can deal
with it . Generally this is a low impedance solution and likely a good
open frame style relay with 10-20 amp contacts area will be fine
2) Casual worked all states and occasional EU DX especially from NE USA
. I worked a fair amount of DX years ago using only a 33ft Butternut
vertical and a KW which for all practical purposes is a simple base
loaded vertical
3) Is high power involved or is this a barefoot operation?
4) If he really wants to be heard ( and be able to switch the neighbors
touch lamps on and off at 25 wpm ..chuckle) then switched in top loading
wires and 1500W amp is the reality. OR move to the county and put up
some real antennas.
Dave
NR1DX
On 12/7/2021 10:29 AM, FRED BELGHAUS wrote:
Gentlemen:
I am trying to assist a friend from my local radio club in his efforts to
get his station on 160. He has a 43 foot vertical with 60 ground mounted
radials, and an AATU at the base. He sends DC on the coax to operate the
AATU.
I would think that it might be possible to add a horizontal wire at the
top, and switch in the
additional length to convert the vertical into an inverted L for 160, but
the specifics of how best to do this are not clear to me. I imagine a
vacuum relay would be the best method, but where should it be located, and
so on.
Rather than trying a number of possible things that might work (but not
very well), I am asking the experts on this list to provide the best
method, with specific instructions as to how to accomplish this, or
provide
a reasonable alternative method that would produce successful results on
160.
I can furnish my friend's email for direct contact with him.
Many thanks in advance for your assistance.
73,
Fred W2AAB
_________________
Searchable Archives: http://www.contesting.com/_topband - Topband
Reflector
--
Dave Manuals@ArtekManuals.com www.ArtekManuals.com
--
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
_________________
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
|