40-2CD_&_TH7

[barry at w2up.wells.com]

price at nosc.mil (James N. Price) (by way of price at cod.nosc.mil) writes:

> the 40-2CD goes on top still, but with the support brace inverted
> (Vee shape underneath) to get it to the top of the mast,
> 
> the TH-7 mounts 90 degrees to the 40-2CD, as far away from it as
> possible,
> 
> 73--Jim, K6ZH, price at nosc.mil
> 
> 
> 

Just a few comments...
If you invert the 40-2CD support brace, it MAY not provide adequate
support. When on top, all you deal with is tension. When on bottom, you 
have to consider buckling.  Does anyone know if it will work that way as 
supplied by cushcraft? I'd be interested in a true engineering-type 
analysis, not just some anecdotal stories of how well it works.

I have my 40-2CD about 8-9 feet above my TH7 (parallel elements). 20 
meters has been fine. I havn't been thrilled with 10 and 15 though. Has 
anyone else had a similar good experience mounting the 2 antennas 90 
degrees from each other?

73 Barry


Barry N. Kutner, W2UP       Usenet/Internet: barry at w2up.wells.com
Newtown, PA                 Packet Radio: W2UP @ WB3JOE.#EPA.PA.USA.NA
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