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### I ran my last 4-1000 with just 4400 V under load of 600Ma. [4800 v no load]. ### With 120 w of drive from a Drake T4XC... it would produce 1950 w output. ### The last batch of new surplus lytics I

<TollFree1800@...> wrote: tube he from him... This was a preview of "what's to come".... #### Bob was refering to the 2nd file I posted. [almost 3 meg] 2nd file is the 84 page mod document for the

wrote: well and fit #### since when did anybody start building 8877's that can actually be rebuilt ??? I find that really hard to believe. $1040 US dollars for a 2 x 8877 amp is money wasted imo. A

Oh, wow! 3CX1200A7's, making RF power with no drive. Can we squeeze an XT-cut crystal in their somewhere to tune the output frequency? * All I need now is a receiver. Lemme trash the MP. Hal _____

1 euro = 1.3 US$ 1 US$ = 0.77 euro

It's rated 6kw, but it's been found with a slightly different cooling scheme and the resultant increase in airflow, that it can be run > 9000 watts anode dissipation... Depending on air intake temp...

It's more for people to look and see what's coming for the YC-243 tube he is putting together. Supposed to be a nice manual coming down the pike for that tube from him... This was a preview of "what's

That quantifies the 'builders' vs the 'tech'. The builder hasn't a clue as to why this part goes here, just that someone told him. If he starts getting oscillations or any other problem in the 8170,

Hi, Pentalab I don't see how this is AMPS related. BUT I will let it stay as long as there is ROOM in the fileing cabinet. We are at 37 percent usage and this is a very nice file. How about some stuff

I wonder if you just wrapped a few turns of wire around the end of the input choke with a pick up probe near the tube this phase shift could be controlled. Also may need a LRC network....just dreaming

^^ The trouble with the RCA circuit is that while the feedback is negative at HF, due to phase shift in the associated wiring as frequency increases, the feedback becomes slightly positive c. 95MHz

Judging by the gold-evaporation patterns I've seen on the grid during autopsies, the 8877's grid is damaged by intermittent UHF oscillations wherein the top layer of the gold-plating boils off and

** The risk of gold sputtering from the 8877's grid is not small. ** And sometimes they will even do so with no drive thanks to their feedback-C. R. L. Measures, AG6K, 805.386.3734 r@...,

However, an 8877 is easier to put on 10m/11m than an 8170. Good point, and, as an added FREE bonus, it's instant-on. cheers, Mr. ______?

A pair is 1040 US$, 20$ for sockets and they can be rebuilt as well and fit in a desktop cabinet. I would not use a pair, but a single tube. Anode dissipation of the YC-243 is 9KW? The price of the

All, Any that has a Harbor Freight close, they have a tool sale now with some good prices on some stuff used in building amps. You need some coupons to get the best pricing, so a link is below to

New Chinese 8877 was asked RMB3800( =US$500+) by tube factory,same condtion in Chinese 3-500Z. it is too expensive to me. I would rather chouse 572B and other inepensive glass tube. 73! Hsu

wrote: trouble ### How much is 400 Euro's in US dollars ?? Think it's at least $600-$700.... + socket. $1400.00 for 2 of em.... not a chance... no bargain there. A YC-243 is still a way better deal at

wrote: ######### The YC-243 is a SOCKETLESS tube. They took a 3CX- 4500F3 industrial heater tube [looks identical to a 3x6.. except it has no socket, is low mu and has a grid flange.. and lugs for

The chinese 8877 at 400 Euros seems to be a good choice, a company nearby uses about 50 of those for two years without any trouble 73 Peter