6HS6

[Stewart Lyon]

Hi John, Carl and all,

The 6HS6 is not that scarce.  If you get on the Internet and use your
search engine for 6HS6, you'll get about four pages of 'hits'.  One of
them will be ESRC who lists the tube for $5.00. Others have it from $6 to
$12.  If you order from ESRC, make sure you request American-made:
otherwise they will send ProCom which are Chinese-made and not as
consistent in gain. All this from personal experiance. After a couple
back-and-forths, I ended up with Sylvanias which work well.

There was an interesting article in QST back when they were a tech
magazine (Feb'66) about noise figure, gain etc. From that article, I made
a spreadsheet that evaluates all the various pentodes used in SB gear.
The only close pentodes to the 6HS6 is the 6AH6 which has higher
grid-to-plate capacity and may oscillate or the 6HR6 which has differant
AGC characteristics and may be just as hard/easy to get.

This same spreadsheet led me to recommend the 6GM6 over the 6BZ6  in the
RFAmp of the SB-301 a year or so ago. Really makes a difference in that
receiver.

BTW, I doubt the replacement of the RFAmp will have much to do with the
audio quality.

Interesting subject  -- more so than the price of a GDO.

73, Stu - W6CUX
Winnetka, CA
ARRL Life Member

On Thu, 3 Jun 1999 07:00:23 -0700 Carl Hyde <cshyde at YAHOO.COM> writes:
>A few days ago I missed a thread that started with
>someone offering some 6HS6 tubes for sale.
>Unfortunately I missed the sale however the seller
>said they would improve the reception and audio of the
>SB tranceivers. What we need to know is what tubes
>they are substituted for in the SB series and if we
>knew that we would both have the answer to the same
>problem.  So if someone could help john and me out by
>explaining to us what tubes are the 6HS6 substitutes
>for we would both apreciate it.
>
>--- John Garko <Jgarko at AOL.COM> wrote:
>> Hi all green people...As I bring my SB102 to life
>> the quality of the receive
>> audio is just not there.  Definitely readable be not
>> crisp. Especially on
>> strong signals. Any thoughts? Any one with a similar
>> experience?
>> Thanks in advance,
>> John
>> WA4KWK
>>
>Carl S.HYDE
>W2CSH
>

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