[TowerTalk] TowerTalk Digest, Vol 275, Issue 9 - Replacing Orion 2800 rotator

[Kenneth R. Goodwin]

Regarding use of the K7NV style mast clamp with the DXE rotator, the K7NV
clamp is good for a steel mast whereas the clamp with its serrated teeth
provided with the Orion is best for aluminum, i.e., soft material.
BTW I have a never used K7NV clamp (2" mast for the Orion) for sale. I
purchased it when I bought the Orion but after being educated I went back to
the original Orion clamp for my 2" OD, 1/2" wall aluminum mast.  Good in QRZ
although I will be in KC4 land for the month of November.  Ken K5RG

Message: 3
Date: Sat, 8 Nov 2025 09:14:07 -0500
From: <john at kk9a.com>
To: <towertalk at contesting.com>
Subject: Re: [TowerTalk] Replacing Orion 2800 rotator with
	DXE-RT4500HD
Message-ID: <000201dc50b9$f28226e0$d78674a0$@kk9a.com>
Content-Type: text/plain;	charset="us-ascii"

I have no experience with the Orion or DX Engineering rotator but I would
recommend using the K7NV style mast clamp with the DXE rotator.  It is a
great design maximizing the contact surface area.  I have never had a K7NV
clamp slip, even with 60ft boom HF antennas.

W2FU should be able to quickly answer your controller set up questions if
the RT4500HD is not included in the RT-21 manual.


John KK9A