[TowerTalk] TowerTalk Digest, Vol 163, Issue 93

[Alfred Watson]

Maybe OT but is there a reflector on the Alpha 9500 HF Linear Amplifier.

Mine does not key from my FT 1000MP anymore. The trouble started recently.

Much Thanks
Al
W4ABW
Huntsville, AL
#1 DXCC HR



-----Original Message-----
From: towertalk-request <towertalk-request at contesting.com>
To: towertalk <towertalk at contesting.com>
Sent: Fri, Jul 22, 2016 11:09 am
Subject: TowerTalk Digest, Vol 163, Issue 93

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Today's Topics:

   1. Re: Biggest rotor that will fit in a Rohn 25G (Danny Pease)
   2. (no subject) (Bill Tippett)
   3. Re: Biggest rotor that will fit in a Rohn 25G (Bill Tippett)


----------------------------------------------------------------------

Message: 1
Date: Thu, 21 Jul 2016 11:49:27 -0500
From: "Danny Pease" <dpease at adams.net>
To: <towertalk at contesting.com>
Subject: Re: [TowerTalk] Biggest rotor that will fit in a Rohn 25G
Message-ID: <014901d1e36f$d84dd6f0$88e984d0$@adams.net>
Content-Type: text/plain;	charset="us-ascii"

John, N9JF used a 6 foot long piece of 6 X 6 X 1/2 inch galvanized angle
iron fastened across the tower about 4 feet down from the top. He uses 4
guys wires, two on each end of the angle iron. This is not quite as
effective as a star guying system, but an improvement over the usual Rohn
torque arms.

Danny NG9R


Message: 2
Date: Thu, 21 Jul 2016 11:50:32 -0400
From: "john at kk9a.com" <john at kk9a.com>
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Biggest rotor that will fit in a Rohn 25G
Message-ID: <2438b61f57f5752fc4cd4a275ffd4032.squirrel at www11.qth.com>
Content-Type: text/plain;charset=iso-8859-1

Does N9JF use a 6 guy cable torque stabilizer or just three torque arms
attached to the tower. The latter does little to prevent twisting.  A Green
Heron controller sounds like it would be a nice addition to the AlfaSpid.

John KK9A





------------------------------

Message: 2
Date: Thu, 21 Jul 2016 13:31:40 -0400
From: Bill Tippett <btippett at alum.mit.edu>
To: towertalk at contesting.com
Subject: [TowerTalk] (no subject)
Message-ID:
	<CAOH7AOpuSDw1sCYqjFACLhceStHY-BXNvvRENexHbPVRumQj1A at mail.gmail.com>
Content-Type: text/plain; charset=UTF-8

NG9R wrote:

> The biggest drawback I saw was the rotor control box does not allow the
rotor to ramp up or ramp down and when it starts turning, it does put a good
bit of twist to the tower, even with anti-torque arms. Same applies to
stopping,
when it stops, there is no slowing down, it simply stops turning. A
different rotor controller would be needed to allow a softer start and stop.

My intelligent controller (a.k.a. yours truly) simply taps the CW and CCW
paddles when starting and stopping.  Worked for the 1500HD (42' boom KLM 5L
20 & 3L 40) and CDE Ham-X series (34' boom KT-34XA).

73,  Bill  W4ZV


------------------------------

Message: 3
Date: Thu, 21 Jul 2016 14:42:38 -0400
From: Bill Tippett <btippett at alum.mit.edu>
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Biggest rotor that will fit in a Rohn 25G
Message-ID:
	<CAOH7AOr7MRV+_OvkoBFhBGQBb19zuDrhfmFdutHZHxF4RuTMCA at mail.gmail.com>
Content-Type: text/plain; charset=UTF-8

NG9R wrote:

> The biggest drawback I saw was the rotor control box does not allow the
rotor to ramp up or ramp down and when it starts turning, it does put a good
bit of twist to the tower, even with anti-torque arms. Same applies to
stopping,
when it stops, there is no slowing down, it simply stops turning. A
different rotor controller would be needed to allow a softer start and stop.

My intelligent controller (a.k.a. yours truly) simply taps the CW and CCW
paddles when starting and stopping.  Worked for the 1500HD (42' boom KLM 5L
20 & 3L 40) and CDE Ham-X series (34' boom KT-34XA).

73,  Bill  W4ZV


------------------------------

Subject: Digest Footer

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End of TowerTalk Digest, Vol 163, Issue 93
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