Robb,
Compare what you have with the manufacturer's photos:
https://www.dxengineering.com/parts/hgn-ham-iv?seid=dxese1&cm_mmc=pla-google-_-shopping-_-dxese1-_-hy-gain&gclid=CjwKCAiAmO3gBRBBEiwA8d0Q4kzRc3uI4W-MU7EmFIlpAbx6xzlrFRK7VVeUOdRkaSSPY6KE7ZSi3RoCHzEQAvD_BwE
https://www.dxengineering.com/search/product-line/hy-gain-t2x-tailtwister-series-ii-rotator-and-controller-combo-kits?autoview=SKU&keyword=t2x&sortby=BestKeywordMatch&sortorder=Ascending
T2X is taller and fatter than the Ham 4. Turn them upside down and look at the
bolt holes. T2X uses six 5/16"-18 bolts for mounting and the H4 uses four
1/4"-20 bolts.
Many of these have the model stamped on the bottom -- simply "H4" or "T2X", or
a date of manufacturer. Before the Ham 4 there were Ham 3, Ham 2 and Ham-M
types. All have the same housing size.
Similar rotors for TV antennas were the CD45 and some others. I think these
used 1/4"-20 mounting bolts too.
Send me a photo if you like and I'll try to help ID.
73 and MX,
Jon
Jon P. Zaimes, AA1K
Tower climber for hire
http://www.aa1k.us/
Cell: 302-632-2353
Reviews of AA1K tower work on eham website:
http://www.eham.net/reviews/detail/12922
Hug your favorite tower every day, and always stay connected to it.
-----Original Message-----
From: TowerTalk <towertalk-bounces@contesting.com> On Behalf Of WB2HNP
Sent: Thursday, December 20, 2018 3:26 PM
To: towertalk@contesting.com
Subject: [TowerTalk] What model rotor do I have?
I bought a tower from a retired fellow who threw in two rotors without
controllers and without any memory of which rotors he was giving me.
I see no model numbers or indications of a model (I.e. Tailtwister, Ham IV) on
the units...Is there a way to tell a rotor’s model without tearing into it?
Please help me out?
Thanks and 73 de Robb WB2HNP
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