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|Heading:||FS; Collins 30L-1 PS & relay board|
|Ad Message:|| Be ware of cheap chinese copy version at some auction sites. The made in China copy version selling higher than my price. Buy the original since 2007. The most popular 30L-1 power supply board for $69.Plus $10 for shipping by USPS priority mail. This board uses 1000V 3A diodes in series, and 105 deg C caps which has a 4 times of life compared to 85deg C caps, 220 uF 6 of them. The Heat sensitive caps are under the board while the Heat generating bleeder resistors are above the PCB , no chance that Heat damage the capacitors.The resistor multiplier 4M ohm is on the board and current shunt is also on the board. completely assembled and tested. The relay board changes the original -170V, 70mA to -12V 1mA. If you use relay controlled transceiver to drive the 30L-1, this relay board is a must.Price $27 plus $3 for shipping,I include free 10uf/250V Bias capacitor and MOV for protection of bias parts when the 811A tubes get Gird-Plate shorted-flash over.
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