Re: [AMRadio] Re: 1930's Old Buzzard Open Rack Transmitter Finally SeestheAirwaves! (Long)

2006-02-25 Thread Larry Szendrei
Makes sense, Brett. I was trying to work it through using diodes at the "bottom" of the grid-leak resistor, and there didn't seem to be a simple solution that way. But since I'm using the grid-leak resistor also as the RF choke (typical old-buzzard practice), so I'd have to add an RF choke. May

RE: [AMRadio] Re: 1930's Old Buzzard Open Rack Transmitter Finally SeestheAirwaves! (Long)

2006-02-24 Thread John E. Coleman (ARS WA5BXO)
See this http://wa5bxo.shacknet.nu/HAMPICTURES/safety%20bias1.GIF and This http://wa5bxo.shacknet.nu/HAMPICTURES/safety%20bias2.GIF Hope this helps John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of ne1s Sent: Thursday, February 23, 2006 3:42

RE: [AMRadio] Re: 1930's Old Buzzard Open Rack Transmitter Finally SeestheAirwaves! (Long)

2006-02-23 Thread Brett gazdzinski
The grid gets its bias the normal grid leak way. At the grid side of the resistor, a diode is installed between the bias supply and the grid, in the direction that allows it to pass bias, but if the grid leak exceeds the fixed bias, it is reverse biased. That's cathode towards the bias supply I th