Ummmm.....where was that "little" tidbit of information in your original statement? I mean about using an external QSK box?
Originally Posted by K4HUD
Indeed. Positive grid-I could be caused by leakage inside the tube. I would use a high-potential tester to perform the Funderberg go/d-sputter test I would install a glitch-R in the HV+ and install a low-Q VHF/UHF suppressor to reduce the 8877's substantial high frequency amplification.
Originally Posted by W1QJ
Where can the Op get a low-Q VHF/UHF suppressor at ??? Rich
Last edited by N3JBH; 06-07-2012 at 02:50 AM.
De Oppresso Liber.
An 8877's suppressor can be made from Cu or Ag wire if one has access to resistors that have <15nH that will dissipate c. 45w @28MHz. [see "Calculating Power Dissipation in Parasitic-Suppressor Resistors", March, 1989 QST, • For the same Q @ 100MHz, if the suppressor's L is made from #22awg resistance-wire, the resistor dissipation is c 55% of what it would be with Cu wire.
Originally Posted by N3JBH