I don't think 8 ohm headphones were correct. I think much higher
impedance phones forces you to turn the volume up and drown out the hum.
Direct conversion receivers are susceptible to a hum because the VFO is
running at the operating frequency and can mix externally with 60 hertz.
This is then detected in the receiver as a hum. I used to put .01
caps across my HW8 power supply to kill this RF and remove a lot of the
hum. Electrolytic caps don't work at RF.
Carl Moreschi N4PY
58 Hogwood Rd
Louisburg, NC 27549
www.n4py.com
On 5/30/2017 4:42 PM, Stuart Rohre wrote:
But if one diode in a bridge rectifier opens up, you have a off balance
power supply DC bus.
Stuart Rohre
K5KVH
_______________________________________________
TenTec mailing list
TenTec@xxxxxxxxxxxxxx
http://lists.contesting.com/mailman/listinfo/tentec
_______________________________________________
TenTec mailing list
TenTec@xxxxxxxxxxxxxx
http://lists.contesting.com/mailman/listinfo/tentec
|