|
|
|
Posted by: Gary/W9FNB Posted On: 05/26/03 Subject: Vectronics vec-1240 transmitter Message Posted: Hello to all. I have a strange problem with this model TX. I am getting almost no power out to the antenna connection aprox.50mw. I have changed the switching diodes to no avail. The voltage at all transisters is correct according to chart and the other components appear to be correct value. The problem occurs when the coax connector is hooked up. I can touch the center conductor to the connection and the output is there but when the shield is connected the output drops off to almost zero. I have looked for a shorted component and have found none and all caps seem to be at proper value and I can find none that are shorted. I have not been able to find why the output goes away when the dummy load or any other antenna is properly hooked up. I hope someone has seen this problem before. This little kit has been a work horse for a couple of years, and the only problem before was a blown final and driver, but was showing proper output untill just recently. Thanks to all who might have any ideas. |
|
Follow Ups: |
|
|