I have a feeling the focus ring shapes the pattern of the 100/450 antennas to
be more like the 430 already is. So there’s nothing to gain with 430.
Apparently whatever magic Cambium used to get higher gain from the single pol
430 patch could not be replicated in a dual pol patch for 450.
First gen focus ring had a screw to tighten it onto the SM, second gen relied
on just a tight fit. I guess you could apply a dab of silicone sealant if you
are worried about wind blowing it off, I’m more worried about ice/snow
accumulation. We’ll know about that soon enough.
From: Bill Prince via Af
Sent: Wednesday, October 29, 2014 10:18 AM
To: af@afmug.com
Subject: Re: [AFMUG] PMP450 Focus ring? Attachment method?
Works on 5GHz FSK and PMP450.
Does not work on PMP430.
PMP430 has a one-off weird internal patch antenna.
bpOn 10/28/2014 9:45 PM, TJ Trout via Af wrote:
Is the focus ring a 450 only product? Epmp?
On Oct 28, 2014 7:50 PM, "Bill Prince via Af" <af@afmug.com> wrote:
The old ones (with the screw in the back) needed some double-stick tape to
hold them in place. We found they wanted to "twist" or ride up like cheap
undershorts.
The new ones (without the screw) seem to fit pretty snuggly. We still put
some double stick (outdoor flavor) under the tab at the top.
The ones we've re-visited seem to be staying on.
bpOn 10/28/2014 3:35 PM, Peter Kranz via Af wrote:
Are you supposed to add some kind of adhesive to keep the focus ring from
blowing off?
-Peter
