[VHFcontesting] Re: For you 432 experts......

[David Olean]

Hello David,
    Please try a real preamp before swapping out the coax for more expensive
stuff. 30 ft of low loss coax will not kill you at 432. (1.5 dB maybe?) If
you are being heard at 5X5, and cannot hear them, you are being killed on
receive. That being said, there are some good deals on heliax cable and you
can't lose using it in your system. I run heliax or similar hardline on all
bands here.
    could you be getting de sense on 432?  I doubt it, but a sharp filter at
432 may make a difference. A strong nearby signal may be limiting your
receive without your knowledge. Try the preamp first, tho.
Dave K1WHS

----- Original Message -----
From: "David Hinton" <ke4yyd at gtcom.net>
To: <wsvhf at mailman.qth.net>; <vhfcontesting at contesting.com>;
<vhf at w6yx.stanford.edu>
Sent: Saturday, March 06, 2004 10:08 PM
Subject: [VHFcontesting] Re: For you 432 experts......


> I have gotten several replies and I appreciate this very much.  Rather
than
> answer individually I will address the group with one email.
>
> Several made suggestions about better coax.  For clarification, the 9913
was
> a generic expression.   The coax is actually 25 feet of Cable Experts
> Flexible low loss with factory N connectors, newly installed.  I have a 30
> ft piece of 1/2 inch Andrews hard-line which I will try sometime soon.
>
> Some asked about the SWR.  SWR measured about 1:5 to 1.
>
> Some asked about noise.  I am blessed with a low noise environment for 432
> and 2 meters.
>
> Some mentioned better antenna system and extra height.  Nice if I could
but
> that doesn't address TX better than RX.
>
> Some suggested better RX preamps and antenna mounted.  Question-- Is
antenna
> mounting necessary for a 25 ft coax run???
>
> Again, thanks for the suggestions.
>
> David
>
>
>
>
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