[MilCom] Discriminator tap

Duane Mantick wb9omc at nlci.com
Sun Jun 12 23:18:27 EDT 2005


 
Well, it seems to me that if I'm paying top dollar for
a receiver the danged thing OUGHT to be able to read
out the correct frequency.  All the other DSP and 
assorted bells and whistles they put in there and
gouge your wallet for, and they can't have an accurate
frequency readout?

Someone's design department is slacking....particularly
if all you have to have is a zero-center meter connected
to a single-point connection on the radio.  That should
be incorporated in the design, not as an aftermarket
item, IMHO.

Duane
WB9OMC
Indiana

-----Original Message-----
From: milcom-bounces at mailman.qth.net [mailto:milcom-bounces at mailman.qth.net]
On Behalf Of 3-500z at comcast.net
Sent: Sunday, June 12, 2005 7:32 PM
To: MilCom at mailman.qth.net
Subject: [MilCom] Discriminator tap

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A discriminator tap is an electrical point to connect a zero center meter.
It will tell you if you are tuned exactly to the carrier frequency of the
station you are listening to. It is useful in reporting true frequencies. 

In other words, if you are listening to a station on 262.26 MHz, but the
zero center meter is pointing to the positive side, it means that the actual
frequency of the station you are receiving is really higher than the 262.26
MHz shown on your readout, it maybe 262.265 MHz. The same is true in the
negative direction, only the frequency may be lower, maybe 262.25Mhz.

The more expensive receivers like the Icom R-7000, & R-9000 have them.

I hope this helps.

John
--
Milford, DE
The first state
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