[TowerTalk] Control circuit for LM470

[K0DAN]

Roger:

The LM470 manual -DOES- have a schematic of the control box. At least I am 
99+% sure it does. Like page 3-6. If not, I have one which I will scan & 
send to you.

I don't think the control circuitry (mostly relays) has changed since my 
1970'd LM470 "D" vintage. Also worthy is to look how the U/L limit switches 
interface. Also, I kludged a homebrew "remote control box" which easily 
kludges into the control box. I also added a microphone/preamp so in the 
shack I can listen to the tower at such times as I remote control the 
up/down.

GL es 73
Dan
K0DAN

-----Original Message----- 
From: K8RI
Sent: August 01, 2013 19:50
To: towertalk at contesting.com
Subject: [TowerTalk] Control circuit for LM470

I recently purchased an LM470 from an estate sale without the controls.
  It has the limit switches and winch.  I think he had removed them for
work, improvements, or who knows what.  He was quite a tinkerer, but
unfortunately the original was no where to be found.  I'm going to build
a new control circuit, placed inside a NEMA 4 enclosure.

The circuit for a motor and limit switches is pretty straight forward,
but I'd like to keep it close to oeiginal.  I can build the whole thing
for jess than a hundred, or about $400 using industrial switches and
lights.

Any one have a copy of the schematic? I didn't find one in the manual,
but could have missed it *(IF)* it is there,

73

Roger (K8RI)

_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk at contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk