[Johnson] Push to talk mod relay for Johnson Ranger

[Dee C. Almquist]

Dear Ranger Ops
Just a suggestion on what / how to configure the PTT circuit. I use only 12v
relay (presently bought from Radio Shack), 4 pole dbl throw small but big
enuf for Ranger power. Two poles for Ranger mods per book, 3rd for breaking
the modulator screen voltage while in standby. This screen switching shuts
down the modulators therefore, saving power & the modulator tubes. Twelve
volts can be easily derived from a small circuit that I will give you if you
email me. The object of this mod is to eliminate the complication & HI
VOLTAGE on the key line.
73 es Dee
W4PNT

----- Original Message -----
From: "John King" <k5pgw at yahoo.com>
To: <johnson at mailman.qth.net>
Sent: Wednesday, February 15, 2006 6:59 PM
Subject: [Johnson] Push to talk mod relay for Johnson Ranger


> Want to put the PTT mod into my Ranger. The manual, at
> page 20, calls for a Potter & Brumfield LM11 DPDT
> relay or equivalent. Coil resistance is 10,000 ohms. I
> have looked at Mouser catalog and relays with 10,000
> ohm resistance coils don't jump out at me.
>
> Anyone know of a good substitute for the P&B LM 11?
>
> Has anyone recently made that PTT Modification to a
> Ranger l? What relay did you use?
>
> Your input appreciated. Thanks and 73, John, K5PGW
>
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