[AMPS] Re: 8877

[Rich Measures]

>
>On Thu, 24 Jul 97 17:25:27 -0700 Rich Measures <measures@vc.net> writes:
>>>From:          Rich Measures <measures@vc.net>
>>>Date:          Thu, 24 Jul 97 02:15:00 +0000
>>>
...snip...
>>>>Have you ever seen a 3CX3000A1 in grid-driven linear service at HF?  
>>
>>>>I have not.
>>>
>>>I've seen plenty of 811A's and 812A's. I've seen 100TL's and 
>>>100TH's also, right up to 450 TH's and TL's....snip...
>>
>>Yes indeed, and the total IMD level was probably -20db.  The all-time 
>>record that I measured was -11db.  
>
>How can you demand ...

Demand?

>... others to supply absolute values one minute and then
>say "probably" the next Rich? 
>The worst I can remember was the Swan 700 at -15 and the WRL 2000A at
>-13dB. 
>
-13 is awesome for a commercial machine.  
>>
. ...snip... 
>>  The only type of triodes 
>>that 
>>Eimac recommends for grid-driven linear amplifier service are low-Mu.  
>
>That is wrong. 
>
I don't think so.  

>Since when is the 3CX3000A7 low-Mu?
>
The 3cx3000A7 is not recommended for grid-driven linear amplifier 
service.  Cathode-driven, yes.  Grid-driven non-linear, yes.  
Rich---

R. L. Measures, 805-386-3734, AG6K   


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