A new? Eimac? 8877? is now a whopping $4250.00? USD,? as of last week, from? MFJ / Ameritron.? (which is gonna be a helluva lot more than that anywhere outside the USA,? like 36% more in Canada =? $5780.00....and? 57% more in VK land =$6672.50 ).? ?Then adding shipping + insurance, also in USD, and you had better have deep pockets.?
Now if you want to run the 8877? at 9% higher than rated? fil V on RX, (and you are on RX most of the time? vs? TX), I'd say you are asking for trbl.? ?At those prices,? I would do everything to keep the tube within spec.?
Reid sez you can run the 8877 fil? at reduced voltage (assuming a new tube, or at least a known good tube).?
IF a regulated DC supply was used, it could be tweaked for? say? 4.75 to 4.80 vdc.?
For the meager cost (chump change)? of a 5.0 vdc regulated supply, it would be dirt cheap insurance.?
?
Jim? VE7RF
