Topband: NCC-2 antenna pattern?

[Tree]

I think the concern about overload is another reason to not consider it.
That box is not designed to handle a strong signal like another transmitter.

One other solution is to try and come up with a coax length that presents
an out of phase signal at the right amplitude to cancel it out on the 2nd
receiver.  I know W8JI has done this on 160.

I have been successful with in-band receiving on 160 with a loop antenna
about 800 feet away from the TX vertical with the null parked on the TX
antenna.  On 20 meters, I have done it with about 500 feet separation.
It's obviously a lot easier with low power (like used in the NAQP).  The
K5KA muiti-ops used an all band vertical for RX for the in band radios.

Tree N6TR

Tree N6TR

On Sun, Dec 17, 2023 at 10:41 AM Kenny Silverman <kenny.k2kw at gmail.com>
wrote:

> Thanks for all the comments, but knowing what the resulting antenna
> pattern seems elusive.
>
> I need in-band RX antenna for a mult station. Typically antenna
> separation, front-to-back and polarization are the main tools for that.
> When I run out of room
>
> I was wondering if phasing from an NCC-2 box is another tool to consider.
> But I don’t want to consider it without knowing what the resulting pattern
> would be.
>
> Many thanks, Kenny K2KW
>
>
> Regards , Kenny
>
> > On Dec 17, 2023, at 1:05 PM, Rick Kunath <k9ao at yahoo.com> wrote:
> >
> > I'm not sure we still understand the intended application of the
> original poster, I know I don't.
> >
> > I've done lots of work with loops and loop arrays phased either
> passively (active or entirely passive external phaser boxes) or actively
> phased via an SDR but none of that would eliminate the need for RX
> protection on the receive antenna and any electronics associated with it.
> So if the OP is trying to get away from any protection from the TX energy,
> I think this is false hope. A loop mounted preamp makes that more
> complicated. And The NCC2 does have options for protection boards for TX
> internally. There are several types available and also internal preamps.
> But it cannot set a specific amplitude and phase angle on the phasing. I
> don't have one and haven't ever had the pleasure of using one, but those
> that do tell me they enjoy them and they work well especially for live
> listening. I do like the idea of having the electronics at the shack end of
> things and as little as possible at the antenna when possible, though
> depending on the specifics you will have VACTROL devices or other
> termination devices at at the antenna with at least some antenna types.
> >
> > Preset patterns and unattended work are another case entirely and this
> is best done with specific phase coherent dual-channel SDRs and a specific
> SDR application.
> >
> > I think doing what the OP might want as I might understand it is
> possible, but I'd like to hear more from him about his hopes for the
> project.
> >
> > Rick Kunath, K9AO
> >
>
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