Topband: Cage wire performance

Kenny Silverman kenny.k2kw at gmail.com
Mon Jan 4 15:37:22 EST 2021


Hi Clive,  thanks for the input!  The existing 75 foot inverted  L measures 26 ohms X=2 using 60 x 100 foot radials. This is very close to what the model calculates. 

Regards , Kenny K2KW 

> On Jan 4, 2021, at 10:12 AM, clive at gm3poi.com wrote:
> 
> Kenny a lot will depend on your ground system. If it is very good then that extra bandwidth may help.
> But if it is just medium quality, there will be sufficient loss not to bother until and if you improve your ground system. Try the bandwidth without the extra wires and see how it compares with the predicted bandwidth. 73 Clive GM3POI/GM3X
> 
> -----Original Message-----
> From: Topband <topband-bounces+clive=gm3poi.com at contesting.com> On Behalf Of Kenny Silverman
> Sent: 04 January 2021 15:06
> To: TopBand List <topband at contesting.com>
> Subject: Topband: Cage wire performance
> 
> Hello and HNY!
> 
> I will be converting a wire inverted-L to a T top loading on a 75’ tall wire hung from a tree. To improve the bandwidth, I was wondering about going to a 2-wire “cage” for the vertical section. I’m actually modeling a skinny triangle where the wires connect at a point on the top, but with a 4 foot spread of the wires near the ground. This adds about 15-20 kc to the 2:1 bandwidth per the model. 
> 
> Will a 2-wire section like this always behave as a wide/fat conductor or do I have to worry about voltage/current in Each wire?
> 
> Regards , Kenny K2KW 
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