I have a Grant XL purchased on ebay. When I got it it would power up, receive just fine, but no TX light change. I found cracked solder joints on all three legs of the final and repaired. Did a shotgun replacement of all electrolytic caps (it had black YEC for the most part), and got TX back.
Grant XL into a watt meter and dummy load yields the following:
AM mode channel 1: 1/2 watt DK swings to 4 watts
AM mode channel 20: 1/2 watt DK swings to 4+ watts
AM mode channel 40: 1/2 watt DK swings to 3 watts
LSB channel 1: 5 watts
LSB channel 20: 6 watts
LSB channel 40: 3 watts
So uneven and lower than expected TX power. I've included a picture. I see one coil is missing its wax and has been adjusted and it looks like a couple wires used to be soldered to the back of audio transformer.
I am an electronics novice at best, but have some basic test equipment and can solder.
I have a multimeter, BK 1040, a freq counter and an old hitachi scope but I'm 95% clueless when it comes to using it.
I hope to be able to return this radio to normal operation with help from the kind folks here.
Grant XL into a watt meter and dummy load yields the following:
AM mode channel 1: 1/2 watt DK swings to 4 watts
AM mode channel 20: 1/2 watt DK swings to 4+ watts
AM mode channel 40: 1/2 watt DK swings to 3 watts
LSB channel 1: 5 watts
LSB channel 20: 6 watts
LSB channel 40: 3 watts
So uneven and lower than expected TX power. I've included a picture. I see one coil is missing its wax and has been adjusted and it looks like a couple wires used to be soldered to the back of audio transformer.
I am an electronics novice at best, but have some basic test equipment and can solder.
I have a multimeter, BK 1040, a freq counter and an old hitachi scope but I'm 95% clueless when it comes to using it.
I hope to be able to return this radio to normal operation with help from the kind folks here.
