[NLRS] my wierd noise - part 4

Sat, 9 Mar 2002 18:55:21 -0600

Well, thanks for all the interest:

1) the noise does not occur on two other 2m FM radios - one on the same
Astron power supply

2) the noise is just as loud w/o the antenna connected

3) the noise is still present when connected to a bench powersupply - and
the period of the popping varies with input voltage to the rig.

4) the rig is a Kenwood TR751A no options installed.

5) No extra filter caps - but see #3

6) wiring hasn't changed from when the noise wasn't present previously to
now when it is.

-Bryan kb0obt

-----Original Message-----
From: Donn Baker [mailto:[email protected]]
Sent: Saturday, March 09, 2002 10:08 PM
To: [email protected]
Cc: [email protected]
Subject: Re: [NLRS] my wierd noise - part 4

WHAT RIG ??
What options installed ?
What power supply (i.e., internal, external)  If external, what supply ?
Extra filter capacitors ? How long are the power leads ?

Is the rig grounded w/separate GND wire ?  Is teh power supply grounded
w/separate wire ?

73 Donn
WA2VOI/0

At 10:03 09-03-02 -0600, you wrote:
>previously: ... this still isn't the periodic pulse problem!  In fact with
>every computer (and network) off in the house, the pulse is still there (on
>FM mode see an
> S-meter pulse every 2 to 10 seconds - time varies slowly).
>
>update:
>It's the rig itself.  Temperature and voltage dependant.  Rig is at the
>shop - who groaned when they heard the symptoms.  Backlog such that it will
>be a few more weeks before they start on it.  Arrgh.
>
>Bryan - kb0obt - not on 2M (or 6) for now
>
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