Topband: NCC-1 / NCC-2

[Joel Harrison]

Hi Gary,

I have experience with both the NCC-1 and the NCC-2. While I can't comment
on how they would perform in your specific environment, I have a
significant line noise source to my southeast about a mile away that I am
yet to be able to get the electric utility to address. The power line runs
north/south about a quarter mile to the east of my house so the noise
radiates along the power line and gives me trouble looking NE/E/SE. While
the NCC-1 was effective in nulling some of my problem, I found the NCC-2
much easier to identify the null and it seems to produce a slightly deeper
null than the NCC-1. Both were used with same RX antenna systems. I sold
my NCC-1 and now exclusively use the NCC-2 when needed and I am pleased
with it.

I do not know if there are any differences between the NCC-1 and NCC-2 as
far as design for nulling, maybe DX Engineering can provide some details.
In my specific situation, the NCC-2 is the better performer.

73 Joel W5ZN



> Folks,
>
> I'm somewhat on the fence regarding
> resolution to RFI I have thanks to AMTRAK
> and some RFI coming to the south of me.
>
> I live at the end of a dead end. There is
> a salt marsh behind me & 1 mile + to the
> next house. AMTRAK is 100' to the north of
> me & it's one mile + from that to the next
> house. There is one house to the east of
> me & another mile + to the next house. To
> the south there are houses & RFI.
>
> AMTRAK's arcing kills me at Gray line
> thanks to the commuter rush at the same
> time. I have too much RFI to the south of
> me and there's noise from the cable lines
> that I can't get them to fix.
>
> Here's what it is like most every Gray
> line when it's cold or damp in the
> fall/winter. This was 3C1L on TB and you
> can barely see him popping in two times in
> the below photo, only when the arcing
> stops for a few seconds. In those rare
> times he was Q5 but only for a few seconds
> and I then couldn't hear him. I had turned
> all lights off hoping that might help (it
> didn't)
>
> Photos of my SVGA screen with the P3:
>
> http://doctorgary.net/rfi-a.jpg
>
> About an hour later it dried out a bit and
> the commuter trains had mostly finished so
> the RFI was less and luckily he was still
> working the pileup & his signal was clear.
> Now that I could hear him Q5, I proceeded
> to call him and eventually did make the Q.
> On the nights the interference lasts, I
> miss most everything that is due to Gray
> line propagation. This was what it was
> like when the arcing lightened up.
>
> http://doctorgary.net/rfi-b.jpg
>
> This is what I have to deal with every
> night & with every SR & SS, kills me in
> the 160M contests too.
>
> I use a HI-Z 8 and a triangular and while
> they are stellar and a must have for me,
> they don't remove this interference even
> though they have great nulling abilities.
> I've been leaning towards one of the NCC
> units, either the NCC-1 or the NCC-2. It
> looks like one of the big selling features
> of the NCC-2 is the inclusion of the RTR-1
> internally which is a receive antenna
> interface & which I don't need with either
> the K3s or my backup K3.
>
> Other than this feature, is there any real
> difference between the function or quality
> between the NCC-1 vs NCC-2? They've raised
> the price of the NCC-2 to where I'm not
> likely to buy it and will wait till one
> comes up for sale in the used market. If
> the NCC-1 is just as good, then I'll go
> that route & get a NOS or good used one.
>
> Thoughts on whether the NCC-2 is any real
> benefit to me VS the NCC-1?
>
> 73,
>
> Gary
> KA1J
> _________________
> Topband Reflector Archives - http://www.contesting.com/_topband
>


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