[TowerTalk] TowerTalk Digest, Vol 167, Issue 38

Wed Nov 16 09:36:15 EST 2016

Happy Connecting. Sent from my Sprint Samsung Galaxy S® 5

-------- Original message --------
From: towertalk-request at contesting.com 
Date: 11/15/16  11:08 AM  (GMT-05:00) 
To: towertalk at contesting.com 
Subject: TowerTalk Digest, Vol 167, Issue 38 

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Today's Topics:

   1. Grease or not to grease (Rick)
   2. Re: Cushcraft ma160v matching coil (jcjacobsen at q.com)
   3. Re: Grease or not to grease (Bob K6UJ)
   4. Very old DX Engineering Stack match info wanted (Mike Smith VE9AA)
   5. Re: Very old DX Engineering Stack match info wanted
      (Mike Smith VE9AA)
   6. Re: Very old DX Engineering Stack match info wanted
      (john at kk9a.com)

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

Message: 1
Date: Mon, 14 Nov 2016 12:14:02 -0600
From: Rick <K9KK at atlinkwifi.com>
To: towertalk at contesting.com
Subject: [TowerTalk] Grease or not to grease
Message-ID: <02471d6e-df89-62d8-9c6c-9441fe1da803 at atlinkwifi.com>
Content-Type: text/plain; charset=utf-8; format=flowed

I have a 52 foot crank up.
It is getting difficult to crank up.
Should the pully/axle assemblies be greased....
???????????????????????????????????

Rick K9KK

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

Message: 2
Date: Mon, 14 Nov 2016 14:57:15 -0500 (EST)
From: "jcjacobsen at q.com" <jcjacobsen at q.com>
To: w0mu at w0mu.com
Cc: towertalk at contesting.com
Subject: Re: [TowerTalk] Cushcraft ma160v matching coil
Message-ID:
	<595712803.2934324.1479153435771.JavaMail.root at md47.quartz.synacor.com>

Content-Type: text/plain; charset=utf-8

How do, 

Mike is having fun with an MA160v, trying to get a match............. 

Mike, 

I've got a H.B. coil loaded (@26' for 75, and then more coil at base for 160), 42' vertical for 160/75/40 and for a shunt coil I used, IF I remember correctly, 1.5' dia and about 8 turns of 12 gauge. That's what I had laying around. Spread or compress until I got the best match. Over 32 ea 32' radials the BW is narrow on 160 (maybe 50 kc), better on 75 (100 +/- kc), and entire band on 40. Hope this helps. 

Have fun. 

73 
K9WN Jake 

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

Message: 3
Date: Mon, 14 Nov 2016 12:30:20 -0800
From: Bob K6UJ <k6uj at pacbell.net>
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Grease or not to grease
Message-ID: <6d2746a0-5fc4-3d0c-e9b3-2635c1f62577 at pacbell.net>
Content-Type: text/plain; charset=windows-1252; format=flowed

Hi Rick,

My guess is that it is probably the pulley bearings in bad condx. One of 
the pulleys could be rubbing as it turns too.  I replaced the bearings 
on 3 pulleys on my tower.  Crank it down, block it up so it is safe and 
inspect the pulleys individually.  Bet you will find some that turn 
pretty hard and the bearings are shot.  The bearings can be replaced 
depending on your tower.  Mine are pressed into the aluminum pulley 
sheaves.  I order new bearings and pressed in the new ones.
What tower do you have ?

Bob
K6UJ

On 11/14/16 10:14 AM, Rick wrote:
> I have a 52 foot crank up.
> It is getting difficult to crank up.
> Should the pully/axle assemblies be greased....
> ???????????????????????????????????
>
> Rick K9KK
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>

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

Message: 4
Date: Tue, 15 Nov 2016 10:55:27 -0400
From: "Mike Smith VE9AA" <ve9aa at nbnet.nb.ca>
To: <towertalk at contesting.com>
Subject: [TowerTalk] Very old DX Engineering Stack match info wanted
Message-ID: <000e01d23f50$4ddb0aa0$e9911fe0$@nbnet.nb.ca>
Content-Type: text/plain;	charset="us-ascii"

I have a very old DX Engineering Yagi Stacking control box I am trying to
find some info on.  I think it's late 80's/early 90's vintage.

I believe it was acquired from a W7 6m Dxer friend back in the mid 90's.
(but it was already somewhat old then).  I don't know the history of DX
Engineering, but did it once reside on the west coast by different folks>?

The grey faced, black cabinet control box has a rotary switch for settings
UPPER/LOWER/STACK (with matching LED's) and a simple on/off toggle.

I am nearly certain it uses only 3 wires for control, though the terminal
strip has more than 3 connections.

I used it on my 6m stack before I moved to my current location in 2004, so I
don't recall what's needed at the tower end for phasing/matching coax
cables.

Ie: Is it 50Ohm? 75Ohm? 1/2wl? 1/4wl?  Which connections?  I have to redo
the remote part as I took it out of service due to a faulty relay or
connections, best as I recall (Hey, I don't throw much away, hi)

IIRC I might have had another remote switch to put them both out of phase,
but don't know where that is.  I don't see anything in the box to be able to
do that, so I presume I did it with an external remote switch added to this
to perform that function. (as an aside, I seldom used BOP..wouldn't waste my
time if I ever stack 2m 6m yagis again, hi!)

***Anyways, my intention is to now reuse this to perhaps phase 2 verticals
for a BS/EF or 2 other directions array.

I was thinking 2 x 1/4WL verticals, spaced 1/2wl apart, with a parasitic
reflector between them, giving me (perhaps_ NE, SW and one other dual
direction pattern , depending on what I can do with a phasing line.

Haven't decided on the band yet..maybe 10m or one of the WARC bands.

TNX, 

Mike VE9AA

Mike, Coreen & Corey

Keswick Ridge, NB

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

Message: 5
Date: Tue, 15 Nov 2016 11:36:31 -0400
From: "Mike Smith VE9AA" <ve9aa at nbnet.nb.ca>
To: <towertalk at contesting.com>
Subject: Re: [TowerTalk] Very old DX Engineering Stack match info
	wanted
Message-ID: <002801d23f56$0a954de0$1fbfe9a0$@nbnet.nb.ca>
Content-Type: text/plain;	charset="us-ascii"

Update: I don't know how I missed this before but I finally found a very
similar unit that was for sale some years back in w7. 

http://www.eham.net/classifieds/detail/330437

I see by the sale ad it needs 2 x 1/4wl 75Ohm matching sections of coax.

Mine does not have the rotary knob numbered 1-2-3-4, nor do I think the
remote part has an N-connector for input (I have to dig it out of the shed
to be 100% certain)

*(I am not sure what the 4th position would even be for?)

So, any ideas how I can use this to phase 2 verticals to give me perhaps 3
different patterns ?

Anybody even seen or used one of these before?

TNX

Mike

Mike, Coreen & Corey

Keswick Ridge, NB

From: Mike Smith VE9AA [mailto:ve9aa at nbnet.nb.ca] 
Sent: November 15, 2016 10:55 AM
To: 'towertalk at contesting.com'
Subject: Very old DX Engineering Stack match info wanted