Do try other head phones to see if you find ones less sensitive to the Direct Conversion hum component. One trick is to front the phones with an audio filter picked to null the hum frequency. You cou
OK, the reason TT used aluminum is they had an aluminum box plant, and lots of aluminum. Aluminum is great for shielding electric fields, while steel and mumetal shield better for magnetic fields whi
The information on getting a Ten Tec RMA for repairs has repeatedly been posted to the Ten Tec reflector here. Apparently the gentleman who was in the dark is not a regular reader of this list. Use a
Absolutely worth fixing! The circuit is fairly simple and parts readily obtainable. The symptom sounds like a shorted bridge rectifier. Someone mentioned there were multiple large electrolytic caps i
In the more crude tube receivers; knowing oprs. just moved the tuning knob a tiny bit to check for someone calling right on frequency with a direct conversion receiver. The receivers, by the way, are
Not to worry folks, people are sorting and packing for the Xenia, Ohio Hamfest. Or as I have been doing, looking for my various unbuilt Ten Tec kits, and manuals. Best laid plans, put kit away for a
I would check the voltage of the power supplies feeding the digital readouts, and digital boards. IF the regulator failed a quick voltmeter check will show it. Observation is a great repair tool. Fin
The place you check about Air Travel restrictions is the TSA fact sheets. (Transportation Security Administration.) I just checked to be able to clarify this. Yes, there is a ban on all electronics i
Additional note. For the restricted flights, personal electronics must be in checked luggage. One cell phone may be in carry on luggage. Again, these are only flights originating in the Middle East,
Update to carry on of rigs in air travel. News over the Memorial Day weekend was all about the Homeland Security head is considering expanding the ban on electronic carry ons to all foreign flights i
I would explore the voltage sag when under transmitting load. This could be an aging electrolytic(s) drying out and failing to provide enough voltage and current, give you have explored solder issues
Do you have diode test function on your DMM? if so, you can inspect each diode in a bridge in circuit, or at worst take off one lead from Plus (+) bus. Silicon diodes will show 600 mv across each one
Alan, I am praying for your health and that of another long time ham friend Joe Canfield here, from the radio club. He has the same malady, Parkinson's. He is not able to legibly sign his name, so we
Yes, the symptoms of an open diode are no 0.6 volt across it on diode test function of a DMM, and much higher ripple or strange ripple waveform on scope test. That, on output of the bridge, (+to -) N