I have 3 105CAs and I am very happy with them.
Two are 38 and 26 years old now, the third is 9 years in use.
Had that vibration problem as well and lost a couple of tips before
inserting 8mm damping rope, it never happened again.
I run a stack with two of them at 55 and 35 feet over sloping foreground to
the west.
After one ARRL 10m contest I got an email from K1ZM, he was very interested
what I was using.
He wrote me that I was consistently stronger during both days then any other
European (I used a modified L4B at 4KV).
The antennas in the stack were tuned with help of HFTA and AO for maximum
gain, SWR2 bandwith was 300KHz.
The third antenna was tuned for wideband coverage at 100 feet and under no
condition came near the stack.
When the band started or closed it was just equal, but only for about 30
minutes.
I am planning now to obtain a forth antenna and built up a H construction
for the next sunspot peak.
Also own a 155BA but that did not do very well before I lengthened the boom
to 39 feet and retuned it,
So now its a completely different antenna but mechanically not very strong
with a 2" boom.
Will be replaced by a stack of 6 element KLMs soon.
On my qth any antenna on 10m at more then 60 feet is definetely too high.
73
Peter
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Bill Parry
Sent: Dienstag, 3. Juli 2007 21:32
To: 'GALE STEWARD'; 'towertalk reflector'
Subject: Re: [TowerTalk] 10M Beam Question
I had the 105CA and the 155CA up for a while and I had a lot of trouble with
the design. I roped the elements, etc but had vibration problems that caused
the elements to break on both antennas (the 10 was particularly bad.) I know
others that haven't had the problem and Hygain replaced the broken elements
each time but after three repair jobs, I junked them and bought the KLM 6
element 10 and 15. The problem stopped after replacing them. I don't have
much wind so I don't know the cause but they certainly did sing in the
breeze!
I wasn't real impressed with the 105CA performance wise. It just didn't have
the impact that I expected. I had the antenna at 90 feet and it may have
been too high. You might want to consider another design.
Good luck
Bill, W5VX
>-----Original Message-----
>From: towertalk-bounces@contesting.com [mailto:towertalk-
>bounces@contesting.com] On Behalf Of GALE STEWARD
>Sent: Tuesday, July 03, 2007 12:14 PM
>To: towertalk reflector
>Subject: [TowerTalk] 10M Beam Question
>
>Thinking sunspots, I spent some time looking thru my aluminum pile and
>I have plenty of stuff to build a 10M yagi. I could build a 105CA as I
>have a bunch of Hygain clamshell clamps and swaged element tubing. On
>the other hand, I was thinking of maybe a 10M PV-4 design. I don't want
>to go longer than a 24 ft boom.
>Any info appreciated!
>
>73, Stew K3ND
>
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