[R-390] 6DC6 Replacement

Thu, 17 Jan 2002 04:14:23 -0500

     All this tube to sandstate talk reminds me of a time in the sixties 
when I took a perfectly good SP-200 and "modernized" it by changing all the 
"oldfashioned" octal tubes to the "new style" miniture tubes. It seemed like 
a good idea at the time. Even put in a built in power supply and got rid of 
that outboard monster. It worked well but I dont think I gained a thing 
except the fun? of doing it.
     What does this have to do with the subject at hand? I havent the 
foggiest anymore.  John

>From: "Bryce Ringwood" <[email protected]>
>To: <[email protected]>
>Subject: Re: [R-390] 6DC6 Replacement
>Date: Thu, 17 Jan 2002 10:41:16 +0200
>
>Hi
>
>(Warning ! - Sand and deceased gramniverous quadrupeds mentioned)
>
>A few observations:
>
>1. The problem I generally have with sand is interference from nearby (
>or sometimes quite far removed ) strong stations causing intermodulation
>effects. Both my homebrew and a well known commercial sand receiver
>suffer badly.  Thus far, I haven't had any problem with tubes. Even the
>much maligned (in the '70s) EF183 gave me great performance.
>
>2.  I don't understand the concept behind 'intercept points' and their
>measurement very well. Perhaps one of you could explain in terms a non
>electrical engineer can understand ? Hope this doesn't become another
>6082 saga.
>
>3. If it doesn't glow it doesn't go. The orange LED should be
>supplemented with a white LED in series with a capacitor to give that
>lovely white glow when you first switch on. White LEDs cost a bit more,
>but its worth it.
>
>4. Some tubes are supplied with plastic pin straighteners - these just
>need the right diameter wire poked through the holes and glued to make a
>header on which a small PCB can be mounted.
>
>6. Many tubes will outlast their owners. This is just an FLP ("Fun
>Little Project"). Making an tube radio solid-state makes no sense other
>than doing it for its own sake. People who take their fun seriously will
>buy a solid state radio.
>
>7. What was 5?
>
>Enjoy your day - Bryce
>
>
>
>
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