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Title: RCA BTA-250L Lights up KR4WI Post by: KR4WI on January 17, 2006, 10:31:56 PM Here is another old bc tx saved from the graveyard. Not yet on the air, having problems finding these large resistors. Matthew KR4WI
Title: Re: RCA BTA-250L Lights up KR4WI Post by: W2VW on January 18, 2006, 12:14:52 AM Neat olde box. More pix please. :)
Title: Re: RCA BTA-250L Lights up KR4WI Post by: KR4WI on January 18, 2006, 03:21:08 PM Hello Mr. C: Yes, I have a few more pix, hr are some of them. bta-250L 1947 I am told, I have been trying to get her going for last yr, just buying parts as I see they need replacing. Hopefully when I replace 4 resistors it will be ready for 160 mtrs. Matthew KR4WI
Title: Re: RCA BTA-250L Lights up KR4WI Post by: W2VW on January 18, 2006, 04:18:04 PM That TX is really clean! Good luck with it.
Title: Re: RCA BTA-250L Lights up KR4WI Post by: KR4WI on January 18, 2006, 07:45:09 PM Yes, It took some work to get it this clean. I used wesleys bleech white, tire cleaner after I took out all the iron, and the tubes. sprayed it down and rubbed it with some old rags, then took the water hose to it, I had to use a floor jack to put the pwr tranny back onto the bolts. I had a helper but we both could not get inside at the same time. and painted the xfmers. Matthew KR4WI
Title: Re: RCA BTA-250L Lights up KR4WI Post by: w3jn on January 19, 2006, 06:57:29 AM Good ol' Westley's, the miracle goo. Good you rinsed well, it'll leave a residue behind otherwise.
73 John Title: Re: RCA BTA-250L Lights up KR4WI Post by: W2PFY on January 19, 2006, 12:38:35 PM I have oftened wondered how those big transformers were changed out in BC rigs. Did the lay them down to do it??
Title: Re: RCA BTA-250L Lights up KR4WI Post by: W2VW on January 19, 2006, 12:50:07 PM Terry PFY, all the retired broadcast technicians had one leg shorter than the other.
Question: Is the cabinet copper plated? I had a couple of older RCA broadcast boxes similar to this one and the whole thing was copper plated. RCA consumer grade stuff was known for being cheap but the commercial stuff sure was not cheap. Title: Re: RCA BTA-250L Lights up KR4WI Post by: KR4WI on January 20, 2006, 05:49:20 PM Hello Dave: No, its not copper plated. thats interesting some of them was. Yea. I talked to a PE last week on phone, he said these where very nice audio rigs, and should last a lifetime if and when I get it working. So that is great to hear that good quality. Matthew KR4WI AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
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