clean sockets?

[Edwin J Forwood]

And they are offering a 10% discount until the 24 of DEC.,  i.e. 6146's
for $18.00.

On Tue, 16 Dec 2003 14:02:15 -0500 "Kechkaylo Dave (ATLINKS)"
<kechkaylod at ATLINKS.COM> writes:
> To All:
>
> I took Glen's advice and purchased NOS 6146As from
> www.vacuumtubes.com. They have 6146, 6146A, and 6293s, all NOS (and
> sell used, less expensive, tested ones as well). The 6146 & 6146As
> are $20.00 each ($25.00 each towards a matched pair); the 6293s are
> $25.00 each.
>
> The 6146As I purchased were NOS RCA, and they work fine in my
> SB-400. I have found that the neutralization setting when using the
> new 6146Ws in my SB-400 had indeed changed over time; therefore, I
> had acquired the 6146As.
>
> Regards,
>
> Dave Kechkaylo, W8QIZ
>
> -----Original Message-----
> From: Heathkit Owners and Collectors List
> [mailto:HEATH at LISTSERV.TEMPE.GOV]On Behalf Of Glen Zook
> Sent: Tuesday, December 16, 2003 11:18 AM
> To: HEATH at LISTSERV.TEMPE.GOV
> Subject: Re: clean sockets?
>
>
> Just curious as to why the 6146B?  Most Heath
> equipment is much easier to neutralize with the 6146
> or 6146A (or 8298 - not "A" version - and 6293) and,
> depending on the exact transmitter (not exact model,
> but actually different units even within the model)
> some transmitters will not function properly at all.
> Towards the last, when the 6146B was easier to obtain,
> Heath used selective 6146B (not RCA, for example)
> tubes because their normal suppliers were no longer
> making the 6146/6146A/8298 tubes.
>
> If you haven't looked at the article on the 6146
> family of tubes you might want to take a look on
> either of the websites that are at the end of this
> message.  The article that was originally in Electric
> Radio a couple of years ago and was reprinted several
> months back by the Collins Collectors' Association is
> posted on either site.
>
> If the transmitter was designed for the much different
> 6146B then that is a completely different matter!
> Those transmitters work fine with the 6146B tubes.
>
>  was just curious as to why the 6146B.  I
> really wish that RCA had not called the 6146B by that
> nomenclature.  RCA originally said that the 6146B was
> completely interchangable with the 6146 / 6146A and
> had 33.33% more power.  Unfortunately, this was not
> the case in many applications.  The 6146B tends to
> "take off", is much harder to neutralize than the
> earlier versions, has different bias requirements,
> etc.
>
> Collins had to redesign the neutralization circuitry
> in the 32S-3 series transmitters and the KWM-2 series
> transceivers to allow the military to use the 6146W
> tubes that were made in late 1964 and after.
> Otherwise, the neutralization circuitry "burned up" on
> many transmitters.  Unfortunately, except for the
> "date code", there is no other designation to tell if
> a 6146W is the equivalent of the 6146/6146A or the
> 6146B.
>
> Glen, K9STH
>
>
> --- Stephen Tetorka <StephenTetorka at CS.COM> wrote:
>
> Also...seeking a few 6GE5 & 6146B
>
> =====
> Glen, K9STH
>
> Web sites
>
> http://home.comcast.net/~k9sth
> http://home.comcast.net/~zcomco
>
> __________________________________
> Do you Yahoo!?
> New Yahoo! Photos - easier uploading and sharing.
> http://photos.yahoo.com/
>
> -----------------------------------------------------------
> This list is a public service of the City of Tempe, Arizona
> -----------------------------------------------------------
>
> Subscription control -
> http://www.tempe.gov/lists/control.asp?list=HEATH
> To post - HEATH at LISTSERV.TEMPE.GOV
> Archives - http://interactive.tempe.gov/archives/HEATH.html
>
> -----------------------------------------------------------
> This list is a public service of the City of Tempe, Arizona
> -----------------------------------------------------------
>
> Subscription control -
> http://www.tempe.gov/lists/control.asp?list=HEATH
> To post - HEATH at LISTSERV.TEMPE.GOV
> Archives - http://interactive.tempe.gov/archives/HEATH.html
>
>

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH at LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html