[AMRadio] 75TH vs. 75TL (was Class C stuff)

[wwd at netheaven.com]

In <3C98F1A3.7A0E882F at pop.state.vt.us>, on 03/20/2002 
   at 03:31 PM, tbigelow at pop.state.vt.us (Todd Bigelow - PS) said:

>Speaking of the 30K series, I think we spoke about this a while back
>Brett -

>What is the difference between the 75TH and 75TL? I seem to recall it was
>only a different bias setting?

'H' = high mu
'L' = low mu

>Also, with respect to the 30K-1 vs. 30K-5, I think the only difference in
>in the PA deck - mod deck should be the same, so....is there an
>adjustment somewhere on the mod deck for setting the bias on the
>modulators? How much of a difference is there to use a 100TH instead? I
>seem to recall you saying that you ran 100THs in yours....

Check ARRL manual or Eimac tube sheets.

>Brett Gazdzinski wrote:

>> In my 30k-1, the 4-125 would glow very bright orange
>> at 2500 volts and 150 ma.
>> The 4-250 would show slight color, the 4-400 would not
>> show any color at all.

Why is no one surprised at this news?? <G>

Bill
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wwd at netheaven.com  To the warriors go the spoils of war; to the hindmost .  .  the surplus.
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