I guess I just don't know enough about the slight differences since I've never seen a PTP800 ODU interface. But that's exactly what a Trango ODU (just Remec OEM) does. The port on the ODU is rectangular and mates up directly with the circular port on the dish. Is there a gap or something for matching?

On 5/13/2018 12:29 PM, Chuck McCown wrote:
If you butt a rectangular waveguide to a circular waveguide will have some return loss mismatch issues.

It would work to a certain extent but you will not have as much tx power as you should and you will have RX loss.

Yes, everything else is the same.  I would give it a try.  It will probably work in a pinch but best to fix it right for the long term.

-----Original Message----- From: George Skorup
Sent: Sunday, May 13, 2018 11:07 AM
To: Animal Farm
Subject: [AFMUG] PTP800 ODU

Anybody know if an 11GHz PTP800 ODU will mate with a Trango dish? I know
the PTP800 ODUs are Remec rectangular, but the Trango dish is Remec
circular. But aren't the physical interface dimensions the same? The
Trango dish is just a round hole, so no plate to rotate to change polarity.

Got a dead ODU on an ApexPlus-11 and I think I can get my hands on a
PTP800 ODU-B. I know Cambium/Ceragon has single and dual pol IP20/PTP820
Remec adapters now, so we're debating whether to fix the one end with
this or just swap to PTP820's.

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