I've been happy with one of these
http://www.pacificantenna.com/
It seems to work well.
B & W used to make an antenna with a 'C' clamp on the base, I used it from
the dorm with some success.
73,
Joe kk0sd
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Richards
Sent: Tuesday, October 28, 2008 3:34 AM
To: Jim Brown
Cc: Tower Talk List
Subject: Re: [TowerTalk] Dorm room antenna?
Exactly what I thought! I have been told by most experienced
hams and radio vendors, such as AES and HRO, that most
internal antenna tuners are incapable of tuning a range in excess
of 3:1 SWR.
As the original question was only asking about internal tuners,
and not outboard tuners, I think the statement remains true...
most internal auto tuners are not capable of tuning a random
wire. My TenTec transceiver has an internal ATU that TT claims
has the ability to tame an antenna with 10:1 SWR mismatch...
although I think it is closer to 7:1 in use. And this is why I spent
the extra bucks to get a big outboard tuner.
Thank you for playing along, but I think your answer really
confirms, and does not contradict, the original premise that
internal tuners cannot really tune a random wire. Something
bigger may be required in many cases. (I wish I knew more
about antenna modeling, so I could see what random wire
lengths WOULD be "suitable" for use with an internal tuner.
Happy trails and 73 !! ======== K8JHR ============
----------------------------------------------------------------------------
-----------
Jim Brown wrote:
> Suitable would be with an SWR no greater than about 4:1 or 5:1. For
> example, a 45 ft wire would likely load on 20 and 40 with a decent
> tuner. On the other hand, you want to avoid a half wave on either
> band.
>
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