It's not me selling it, nor any relation - just stubled upon this in my travels. LPB RC-25B transmitter. Was supposedly last operated in 2011. Will probably need new tubes - the usual shiny metallic deposit on the envelopes near the getter have turned brown, usually indicating gassy (losing vacuum) tubes.
Currently at $206.50 plus calculated shipping with just over a day left.
I actually sat and looked at that for 10-minutes, dreaming about the wonderful tube days in part 15 AM radio.
I still think of designing a part 15 tube transmitter that can be switched for CC or antenna, loaded with fans, meters, and knobs.
here in Connecticut.
I have a friend who is using a 60 watt
LPB as the nighttime transmitter for
an AM station here in CT.
This is one of the more recent LPBs,
solid state, with transmit crystals that
are 4 times the carrier frequency.
Bruce, DOGRADIO
I
If'n you're interested, there's a couple of LPB AM-5 Solid State transmitters on eBay right now, with BIN/OBO - more details in this thread:
http://www.part15.us/forum/part15-forums/lpb-carrier-current-coupler-ebay
Mr. AZ, things are happening, even with snow coming tomorrow.
I contacted the guy to point out the listing mistake, and also noticed the pics showed that 610 was crossed out and 1510 was marked over it.
Since he said he had several, I asked for the one closest to my channel.
We shall see.
Wonderful!
I figured that it probably had the crystal changed. While the bigger transmitters can only be recrystaled within a relatively small range (1/3 - 1/2 the band) because of the filters on the output of the amplifier, I'd be somewhat wary, but I *think* that's not an issue with the AM-5. Still, better safe than sorry, so best that you get one already as close as possible to your frequency to avoid problems. I notice that one's sold now (to you? CONGRATULATIONS!) and he's got an another AM-30 up again.
Ya, I ran into the three distinct band situation with my LPB2-20, which was set for the low band, about 540 to 810kHz, or some such.
I was able to get the needed information about re-building the output circuit, 3x toroid inductors and 3x capacitors, and made the conversion.
The output filter section is the same for the 20 and 30-Watt versions, maybe also for the 5-Watt.
I don't know yet if I "won" the LPB-AM-5.... I'll check tomorrow.