开云体育

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

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

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

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

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.

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

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

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

I guess the YC-243 is the same tube with a different socket 73 Peter

After having conversed with Jim over the last few days via email, I'm inclined to believe the new "tube of choice" is going to be the YC-243... It seems like the way to go. Not to mention, the 11

The 8877 is a waste of money, for the dollars they choose to demand for it. For the price of a new 8877 you can purchase an 8170 and socket on the used / pull market. For about the same amount

What bites is when the manufacturer purposely keeps it out of stock to make it look like it is a good thing and drive the price up. BOB DD

Yeah Peter, For some reason, the good stuff is never in stock. BOB