Copper Talk » Open Forum » Archived Messages » 2002 » 10/01/2002 to 10/31/2002 » Robyn T 240D AM tube base. « Previous Next »

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HoosierCardinal
Posted on Tuesday, October 22, 2002 - 4:28 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
Anyone ever use one of these old rigs?
Ive got one and for what it is it seems like a neat old radio!
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Tech671
Posted on Tuesday, October 22, 2002 - 10:21 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
Yep, I have the 240d known as the "yellow monster" and the 123b called "green monster".
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2600
Posted on Wednesday, October 23, 2002 - 1:43 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
I liked those old radios. They were made by Panasonic, and labeled for a handful of name brands like Colt, Gemtronix, Robyn and Teaberry. Just don't get bamboozled into cracking the tuning slugs. Most of them had a hard enamel paint locking the slugs in place. It kept them from shaking loose on the trip from Japan. Unfortunately, it's like concrete after 20+ years. Too many folks just twist harder, and crack the brittle hollow core. NOW getting it to turn becomes a borderline nightmare. Enough solvent to soften the enamel and make the slug turn will sometimes soften the plastic base, or worse yet the glue that holds the coil form to the base. When it spins, all the wires inside the can rip loose. Great fun. Still a loud booger when it's right, and not too shabby on rejection.

73
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HoosierCardinal
Posted on Thursday, October 24, 2002 - 7:45 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
LOL!!! found that out already! I broke off the ttip on my tuner stick after trying in vain to get the slugs to turn. No damage thought to the tuning slugs however. But overall its not a bad rig. Id like to find someone that can tune this radio so i cant get the max audio out of it. Now it only does like about 4 watts and swing to about 6. Needs a good tune by a reputable tech.
But oh man, does it ever have the receive!!!!
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409
Posted on Friday, October 25, 2002 - 4:07 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
If you have a good one your lucky, most have problems with age. I have seen many with dead or near dead receives. Seems that those old rigs had sub-standard resistors in the receive circuits and change with heat from the tubes along with the years. The Gemtronics and Robyn were the worst,while many of the Teaberry model T's had modulation transformer falures.