[CCF] Fw: Topband: locals

[Ilmo Anttila]

Onko vielä parempia rigimainoksia olemassa?

Ilmo, OH2BO
----- Original Message ----- 
From: "Jim Brown" <jim at audiosystemsgroup.com>
To: <topband at contesting.com>; <W7lr at aol.com>
Sent: Wednesday, January 28, 2009 1:17 AM
Subject: Re: Topband: locals


> On Tue, 27 Jan 2009 13:14:50 EST, W7lr at aol.com wrote:
>
>>I am going to borrow a K3 to see if that helps.
>
> I've owned and loved a pair of TS850s and a pair of FT1000MPs, but
> happily replaced all but one of the MPs to buy a pair of K3s.
> Other members of our club (NCCC) have done the same. I have three
> neighbors with K3s, and we all run high power. The K3s are a HUGE
> help, both on the TX side (much less phase noise, no clix) and the
> RX side (much better selectivity and strong signal performance).
>
> I'd guess that there are close to 50 K3s in our club, and all are
> reporting similar results. Owners (just off the top of my head)
> include W0YK, K6XX, N6TV, N6RO, K6AW, K6XI, W6DRX, K6MM, N3ZZ,
> K6TD.
>
> W6DRX is about 0.3 miles from me. He's the main reason I bought
> K3s, and I'm the reason he bought one. :)  From my own experience,
> I can tell you that they won't eliminate your mutual interference,
> but they will help a LOT. RX antennas can help some more. See
> below.
>
> A good RX like the K3 is still limited by whatever RF trash the
> other station is putting out. If his rig makes clix or phase
> noise, you'll still hear it if it's on your RX frequency. RX
> antennas can help to the extent that they null his signal.
>>
>>Is there any in-band filters that might help, or any other ideas?
>
> I think W2VJN used to make some very narrow band RF RX filters.
>
> Directional RX antennas can be a HUGE help. Anything from a
> Beverage to a loop with a strong null, depending on what you can
> build. Whatever you build, use my ferrite coax chokes to decouple
> them from the coax so that RF pickup on the coax doesn't fill in
> the null. N6RK has designed and built some RX antennas with nulls
> deep enough that he can run SO2R on 160 with one rig calling CQ at
> one end of the band while he's listening S&P on the other end.
> Details are on his website, and he's presented details at both
> Visalia and Pacificon.
>
> 73,
>
> Jim K9YC
>
>
>
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