[TowerTalk] CUSHCRAFT XM-240

[Grant Saviers]

My 40m W6NL Moxon has a 1.5:1 swr dip at 26.8 Mhz.

Grant KZ1W

On 11/4/2020 14:31, john at kk9a.com wrote:
> If I recall correctly the Moxon is resonant closer to 10m than 15m. The
> Moxon's elements are a lot larger than the normal shorty-forty beam. If you
> want a reduced size 40m element, I think loading coils are the best option.
> Here is an interesting web page on Cushcraft's coils:
> https://www.qsl.net/ve6wz/CC_coil.htm
> 
> John KK9A
> 
> Tyler Stewart k3mm at verizon.net
> 
> Mine is set mid-band.  The Swr gets fairly high at the bottom 25kc.  Fine
> for a typical tube amp.  Marginal for an Alpha87 or similar.  It still
> performs fine there.  I've never tried stacking a pair.
> The beefed up 402CD is a strong antenna.  No truss, little sag, and it's
> only been rebuilt once in 25 years for the coils getting naked. Of course
> the Moxon design is better but I'd look carefully for interaction on 15.
> 73, Ty K3MM
> 
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>   On Wednesday, November 4, 2020, Bill via TowerTalk <towertalk at
> contesting.com> wrote:
> 
> I've heard good and bad about this antenna.  Has anyone used these in a 2/2
> stack?  Has anyone mounted this antenna above or below a tribander with
> about 10 feet of spacing above or below?  If so, was the SWR changed on
> either the tribander (especially 15 meters) or the XM-240?  If constructed
> with the mid =band setting (7125kHz) what was the SWR across the band?  Any
> thoughts on the antenna?
> 73  Bill  K4XS
> 
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