572B cost

[Ray Friess]

I could sure use a couple of 811a's.   I'd even trade for some
4-125's I have if anyone is interested.
     Ray  WA7ITZ


Bob Meyer wrote:
>
> Well thank you for all you input with 572B tubes.
>
> I still have a few sets of 811A tubes left.
>
> I looked up price and found 572B tubes are very costly.
>
> I read that they last the rest of my fife.
> Well the cost will take the rest of my life to pay for it.
>
> I did look at spec sheet.they will fit.
>
> I already had to use a 6.3V 20 amp fil. transformer to buck
> ac line coltage down to 115 for
> Collins 30L1 and my outher heath kits.
> my ac line runs a bit high here.
>
> well I may be able to affored 2 572B.
>
> That is on problem with 30L1 is under rated supply.
>
> Well I looked a manual and I could use a externat supply
> to make more current but I doen't want to
> put stress on tank circuit.
> so I will leave collins factory power supply.
>
> robert,
>

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