455 KHz 2nd I.F. Filter.
Most modern radios sold today have a 3 KHz receive filter. This narrow bandwidth is responsible for the
narrow, high thin sound squeaking from your speaker. This aftermarket 6 KHz filter will effectively double the
amount of bandwidth allowed thru to the receive section of your radio.
This wider filter and some simple capacitor changes ( found on the net for your specific radio ) and a good
quality external speaker will turn your radio into a Rx Monster.
Start enjoying the sound of your radio today for only $25.00 including instructions.
To order simply E-Mail me to make sure I have them in stock ( they sell quick when I can get them ), I will reply
with a pay pal invoice to you. Also let me know if you need a 3 or 5 pin filter, you can find this part inside of
your radio, it is a small black square part located around the Rx section of the radio and look like what is
pictured below. Sometimes they say 455KHz on top and are usually glued down to the PCB board.
rick@rickadams.net
Colins Bridge Rectifier Boards
This bridge rectifier is modeled around the colins bridge rectifier found in many tube type commercial
broadcast transmitters. I sell just the PCB board so the builder can utilize parts that meets his specifications. I
do not sell mounting hardware. These boards have been designed for Maximum ratings of 10,000V @ 8
Amps DC. These rectifiers should be mounted in the vertical position for maximum cooling effect or near
positive airflow. The picture below is for reference only, again I do not sell populated boards with stand off’s.
PCP boards only $20.00 Each + Shipping, please E-Mail me to make sure I have them in stock. I will reply
with pay pal invoice.
rick@rickadams.net