[Johnson] Push to talk mod relay for Johnson Ranger
Dave Maples
dsmaples at comcast.net
Thu Feb 16 20:25:53 EST 2006
All: Let me ask a question here. Mr. Scott, full shields...this is a tough
crowd.
Why not rectify the DC filament voltage (I believe it's ground-referenced)
and use a suitable low-voltage DC relay? They are far easier to come by,
and the job is done basically the same, AND the B+ supply is not on the mike
connector (through the relay, to be sure, but still there)?
It may not be original, but does it really matter (other than to the
absolute purist)?
Incoming!
Dave Maples
-----Original Message-----
From: johnson-bounces at mailman.qth.net
[mailto:johnson-bounces at mailman.qth.net]On Behalf Of Gary Schafer
Sent: Wednesday, February 15, 2006 7:52 PM
To: 'ROLYNN PRECHTL K7DFW'; johnson at mailman.qth.net
Subject: RE: [Johnson] Push to talk mod relay for Johnson Ranger
> -----Original Message-----
> From: johnson-bounces at mailman.qth.net [mailto:johnson-
> bounces at mailman.qth.net] On Behalf Of ROLYNN PRECHTL K7DFW
> Sent: Wednesday, February 15, 2006 7:34 PM
> To: johnson at mailman.qth.net
> Subject: Re: [Johnson] Push to talk mod relay for Johnson Ranger
>
>
> > I have looked at Mouser catalog and relays with 10,000 ohm resistance
> coils don't jump out at me.
> ===============================
>
> They were called plate relays during the last century. Nowadays look for a
> relay with a 110VDC coil and that'll get you close to 10K.
>
> K7DFW
Not a chance. Entirely different thing.
73
Gary K4FMX
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