[CQ-Contest] Coax Stubs...

[Dave Hachadorian]

I would use a regular TV-type male crimp connector for one end of 
the stub, and then type F female to UHF male adapter:
http://www.showmecables.com/product/F-Type-Female-to-UHF-Male-Adapter.aspx?utm_source=google&utm_medium=cse&utm_campaign=925&zmam=49733141&zmac=5&zmas=1&zmap=925&gclid=CKaEu8ntp8oCFYaCfgodkwABjw

If you need a shorted stub, you can use a wire nut at the other 
end:
https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwibgICJ7qfKAhXB4CYKHR4OAh0QjRwIBw&url=http%3A%2F%2Fwww.idealind.com%2FprodDetail.do%3FprodId%3Dwire-nut&psig=AFQjCNFEGVnkoG8vDszegO6oyMAI4hz0Cw&ust=1452811320423462

RG-6 has wide variation in velocity factor, so you need to use a 
dip oscillator, or some other instrument to measure the resonant 
frequency of the stub.  If your RG-6 has foam insulation, your 
stubs will need to be roughly 23% longer than the K2TR lengths 
shown here:
http://www.k1ttt.net/technote/k2trstub.html
You really need to measure the resonant frequency though, rather 
than just cutting to length.


Dave Hachadorian, K6LL
Yuma, AZ


-----Original Message----- 
From: Douglas Ruz (CO8DM)
Sent: Wednesday, January 13, 2016 11:09 AM
To: CQ-Contest
Subject: [CQ-Contest] Coax Stubs...

Hi contesters,

I have few meters of RG-6 coax cable...about 100 m.

We need Coax Stubs for our contest station...we are planning work 
in next ARRL CW in Feb.

Our Max Power is 500 watts.

I have all information about K2TR coax stubs designs.

I am worry about my RG-6 cable...the braid is Aluminum (Al) 
instead of Cooper (Cu), so, i can´t solder the braid. I think the 
solution is an adapter to make a good contact with the shield 
side of the PL-259...

Any tips or ideas?

Thanks,

73....Douglas, CO8DM
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