[NLRS] Anybody have experience with multi-band feeds?

[Zack Widup]

I have been using the WA3RMX triband feed on a two-foot dish on 2304,
3456 and 5760 for quite a few years now. As you mentioned, they are a
compromise but I have had really good results with it. Hundreds of
QSO's on each of those bands.

If I ever get a car top carrier for my antennas I may go to a
three-foot dish but the two-foot one has netted me QSO's as far as 500
miles during a really good band opening. And that was with less than
10 watts on all three bands.

73, Zack W9SZ


On Thu, Feb 3, 2011 at 6:02 PM, David Palm <thepalmhq at gmail.com> wrote:
>
>
> I have been corresponding a bit with WA5VJB about the use of one of his
> log-periodic yagis as a multi-band feed for a dish.  (He actually
> recommends  using one of his newer Vivaldi PCB antennas, which he says
> should be a bit easier to connect and a bit more efficient in this role.)
>
> I realize that this is at best a compromise solution on every band, but it
> is extremely attractive to me for a rover set-up to be able to use the same
> dish from, say, 2.4 - 10 GHz.  I was thinking that I'd try to build a loop
> yagi for 2.4 GHz and try using the multi-band dish on 3.456 MHz and up (if I
> get the equipment working in time.)  But you get the drift.
>
> I've read the article that Paul Wade, W1GHZ wrote about this (
> www.w1ghz.org/antbook/conf/WA5VJB_LPA_feed.pdf) and the two take-aways from
> that were that 1) it should work and 2) it seems best to optimize the system
> for the highest band and then just take your lumps on the rest.
>
> I'm wondering if anybody has any experience on this that they could share?
> I'm interested in having something ready for the August contest and am
> starting to plan now.  If you have other suggestions for multi-band antennas
> for the rover, I'd be very interested to hear your suggestions.
>
> 73,
>
> David  W9HQ
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