[Amps] GS35B Amps Common Problem / few more comments

[Jim]

Agreed! 8877 is one the the BEST tubes for ham radio.

LOTS of them out there and available. Hams bought many of them for 
spares that never got used; Because the 8877 was such a robust tube. 
Most 8877 tubes got babied... Except for contesting... But there is 
testimonial from K3LR's large and busy contest station below. So even in 
a contesting environment, the 8877 goes STRONG!

8877/3CX1500A7 hard to beat!

Thanks
73
Jim W7RY

On 11/5/2019 8:34 PM, Tim Duffy wrote:
> Hello Jim,
>
> I agree - the 8877 - 3CX1500 is a VERY good Ham Radio tube. I have several in service here at K3LR that are 30 years plus years old.
> 18 amplifiers here using 8877s that make 1500 watts output RTTY with high TX duty cycle - no problem - all the way to 220 MHz!
>
> The 8877 is an excellent engineered tube for amateur radio - easy to build amplifiers with the 3CX1500A7.
>
> 73
> Tim K3LR
>
> -----Original Message-----
> From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of MU 4CX250B
> Sent: Tuesday, November 5, 2019 9:12 PM
> To: Carl
> Cc: amps at contesting.com
> Subject: Re: [Amps] GS35B Amps Common Problem / few more comments
>
> You may be a bit harsh, Carl!  I’ve lost two 8877s  in the past half
> century or so, and it was my fault both times. The first was when I
> stupidly let the filament voltage drop way below specs, and the second
> was when the blower on my Alpha 9500 failed and I didn’t notice for
> two weeks. My workhorse homebrew amp, built in the 1970s, has an Eimac
> 8877 with a 1978 date code. Still full output, 4300V on the anode.
> 73,
> Jim w8zr
>
> Sent from my iPhone
>
>> The 8877 is a fragile short life wannabee befitting an oxide cathode tube
>>
>>
>> Carl
>>
>>
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