Man!  You did whip that radio!

I typically would get about 100 watts out if I ran maximum smoke out of 
it.  Noting that Kenwood recommended a plate current of 200 mA, I would 
back the gain down to that figure, instead of the 250 mA that I could get 
if I wanted to let it all hang out.  200 mA would still deliver about 90 
watts out.  That tells me that noting the discrepancy in power increase and 
current increase, I probably was either throwing a lot away in heat or 
starting to cause some non-linear operation, or both.  Anyway, I decided 
that it wasn't good for the tubes, and ran the radio according to Kenwood's 
instructions and it always gave me faithful service.

73, de Lou K2LKK



At 05:30 PM 2/18/2008 +1100, you wrote:
>the 520 I use to ownI must admit copped a beating. I drove it flat stick
>all day every day. I squeezed as much as I could out of the thing which
>in the end was roughly 150 watts. to my knowledge, it's still on the air
>to this day.
>
>
>On 18/02/2008 8:55 AM, the old scribe known as John Miller was able to
>impart this pearl of wisdom:
> > I can't believe all the TS-520, 530, 820 and 830's around on ebay, as well
> > as other sites and still on the air. I know a lot of people still using 
> them
> > as their every day radios and have for a very long time. If you treat them
> > right, you can't kill them. I know people literally who use them every
> > single day.
> > ----- Original Message -----
> > From: "Richard Fiorello" <[log in to unmask]>
> > To: <[log in to unmask]>
> > Sent: Sunday, February 17, 2008 4:11 PM
> > Subject: valve radios
> >
> >
> >> Hi;
> >> Haven't heard any specific references to "valve radios" but if you are
> >> considering a radio with tube finals there are lots floating around at
> >> reasonable prices.  There are circuits that will give you a variable tone
> >> as
> >> the rf output increases.
> >> Lots of tube radios have lots of life left in them and they are becoming
> >> more reasonable unless you want collins.
> >> Now if money were no object a old collins station would be fun.
> >> Richard
> >>
> >
> >
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>
>
>
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>5:50 AM

Louis Kim Kline
A.R.S. K2LKK
Home e-mail:  [log in to unmask]
Work e-mail:  [log in to unmask]
Work Telephone:  (585) 697-5740