Topband: Helically Wound Vertical

[DAVID CUTHBERT]

Trent,

another solution that works well, is relatively inexpensive, and uses
off-the-shelf components is the Hustler 5BTV vertical. It works on 10, 15,
20, 40, and 80 meters. Add a DX Engineering top hat (48" spokes) on a second
RM80S resonator. The top hat and the orginal RM80S mount on the mobile
triband adapter.

Radiation efficiency is around 60% on 40 meters, 20% on 80 meters, and 7% on
160 meters. For a 23' vertical this is not bad. Band with is >200 kHz, 50
kHz, and 15 kHz respectively..

   Dave WX7G

On Wed, Jul 15, 2009 at 5:03 AM, DAVID CUTHBERT <telegrapher9 at gmail.com>wrote:

> Trent,
>
> the vertical will outperform the loop at 8'. I can send you plans for a
> vertical that works on 160, 80 and 40 meters. Simply feed with coax and it
> covers 20 kHz on 160 meters, 50 kHz on 80 meters, and 200 kHz on 40 meters.
>
>     Dave WX7G
>
>   On Tue, Jul 14, 2009 at 9:45 AM, Trent Fleming <trent.fleming at gmail.com>wrote:
>
>> In a recent ham magazine, there is an article about an HWV for 160m  I am
>> very interested in having an antenna for 160m, and in having a vertical
>> for
>> the low bands in general.  If I were to build this HWV, are there any
>> techniques I should consider to get it to perform well on 80 and even
>> perhaps 40m?  Or am I being greedy and just need to focus on the HWV
>> optimized for 160.
>> The other low band antenna I am considering is a full sized loop for 80m,
>> running it around the inside of my 8 foot fence - is that a better option
>> for 160 as well?  Say a half-wave?
>> The wisdom of the group is welcomed.  My (new, to me) Kenwood TS-690
>> arrives
>> this week and I want to start thinking about low bands for the fall and
>> winter.
>>
>> 73,
>>
>> Trent
>> N4DTF
>>
>> --
>> Trent Fleming
>> Follow me on Twitter
>>       www.twitter.com/N4DTF
>>       www.twitter.com/remotedeposit
>>       www.twitter.com/techadvisor
>>
>> My WebSite
>>       www.trentfleming.com
>> _______________________________________________
>> Topband mailing list
>> Topband at contesting.com
>> http://lists.contesting.com/mailman/listinfo/topband
>>
>
>