Some radios, especially ham equipment is so sensitive to any voltage drop,
even 1 volt can make a huge difference. It never hurts to clean the
terminals up and see what happens.
----- Original Message -----
From: "Tom Behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, June 02, 2012 9:07 PM
Subject: re-thinking the power supply issue
> Hi, everyone.
>
> Well, I'm now re-thinking my power supply dilemma, and may not need to go
> out and spend the money for a new one after all.
>
> Here's the latest scoop:
>
> When I took the voltage and amperage readings last night, I thought it
> would
> be sufficient to somehow clip the leads on my Omega talking meter to the
> lugs on the Astron RS35. This is where I got the really strange and
> variable readings when putting a load into the circuit.
>
> However, and this is a big however, tonight, I figured out a way to
> squeeze
> the leads in so that they could connect directly to the rig runner
> terminals
> themselves, and that made a big difference. My voltage without any load
> still remained at 13.35 or so, but the voltage when transmitting on full
> power was much more stable this time, ranging from a low of 13.0 to a high
> of about 13.20. I then took power readings with the TS590's meter on full
> power, and came up with 100 watts. So, if there is a problem here at all,
> I
> think it might be simpler, and might merely take the form of terminals
> that
> meed to be either cleaned or replaced. You wouldn't think that would make
> much difference in voltage readings, but apparently it does. I am not
> sure
> why I initially kept getting those 50-watt power readings earlier in the
> week, but now, I'm less convinced that there is a major problem with the
> supply. Obviously, I'm going to have to take things apart here, clean and
> secure everything systematically, and then see if the problem recurs.
>
> At any rate, it beats spending money on a power supply that I simply may
> not
> need, at least right now.
>
> 73 from Tom Behler: KB8TYJ
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