[Boatanchors] Heathkit HW101 Rx problem

[Glen Zook]

Same fix as the Collins KWM-2 series.

Glen, K9STH

Website:  http://k9sth.com


--- On Thu, 8/12/10, Drew P. <drewrailleur807 at yahoo.com> wrote:

This problem is often due to screen grid emission in the 6146 final amplifier tubes during receive.  In the SB/HW 100 series, the final screens, the driver screen, and the isolation amplifier screens are all supposed to be at a negative potential during receive, but final screen emission drives the whole lot positive.  The cure is addition of a diode in series with the lead feeding the final screens.