What do they call those tiny push in type coax jacks on the circuit boards? I'm trying to find some for a project and TenTecs are loaded with them. Steve N4LQ
Joe Looking at the circuit I see it doesn't have a tuned input but relies on that 25w resistor, 150 ohms to divide power between it and the cathodes. I guess you can measure that resistor to ensure i
I still have the original "standard" 81550 board from my Centurion amp. 3 toroids and 3 caps. Same part number! The Centurion does have tuned input so it would have better matching etc. I can easily
John I keep seeing examples of this and so far I have not seen an easy cure. I can warn you however....If you start messing those crystals and attempting to "peak up the coils" you risk upsetting the
Take the bottom off, locate the relay on the control board, pull the cover off the relay and jam a scrap of cardboard or paper between the contacts so it can't move. I've used matchbook cardboard. Pu
Many rigs have only one key/paddle jack which is a 1/8" stereo type. To change from bug or st. key to a paddle you must do so in the menu. That's how many compact rigs are including the IC-7300 and o
Q1 is just a transistor switch that triggers the relay coil. If the relay is buzzing you must be putting ripple on it and that comes right out of your power supply, 13.8v. I don't see why changing ca
Measure the voltage across the relay coil and see if it's being hung up by voltage or just a mechanical problem. Can you pull the cover off the relay? Steve N4LQ