hi all!
I make good quality sockets for tubes: GI7B, GS35B and others.
if interested, ask me.
144m@ukr.net
73! UX3LV, Vladimir.
6 травня 2023, 03:33:06, від amps-request@contesting.com:
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> Today's Topics:
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> 1. Anybody still building with the GS-35b ? (Mark Foltarz)
> 2. Re: Tiny SA ultra, part 2 (jim.thom jim.thom@telus.net)
> 3. Re: Anybody still building with the GS-35b ? (Alek Petkovic)
> 4. Re: Anybody still building with the GS-35b ? (John Sparkes)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 5 May 2023 16:25:35 +0000 (UTC)
> From: Mark Foltarz <Foltarz@rocketmail.com>
> To: "amps@contesting.com" <amps@contesting.com>
> Subject: [Amps] Anybody still building with the GS-35b ?
> Message-ID: <660601887.4642556.1683303935327@mail.yahoo.com>
> Content-Type: text/plain; charset=UTF-8
>
> I'm doing a conversion on my SB-230 using a gi7b? tube.
> Just wondering if builders are still using the?GS-35b.Seems like they are
> still plentiful and seem to be a good tube.
> Looking for input before I try and get a few and some sockets.
> tnxde WA4AMMark
>
>
> | | Virus-free.www.avg.com |
>
>
>
> ------------------------------
>
> Message: 2
> Date: Fri, 5 May 2023 09:28:46 -0700
> From: "jim.thom jim.thom@telus.net" <jim.thom@telus.net>
> To: amps@contesting.com
> Subject: Re: [Amps] Tiny SA ultra, part 2
> Message-ID:
> <CAB4ZMguUe3Kq_9qZdzkW99ADG4gsE=jUU3g7=64q1e7m6x-oqw@mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> Date: Wed, 3 May 2023 10:11:54 -0700
> From: Jim Brown <jim@audiosystemsgroup.com>
> To: amps@contesting.com
> Subject: Re: [Amps] Tiny SA ultra, part 2@audiosystemsgroup.com
> <68da6a57-1631-02df-034b-169f4e74f139@audiosystemsgroup.com>>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> On 5/3/2023 4:17 AM, jim.thom jim.thom@telus.net wrote:
> > This version might
> > just work for imd testing.
>
> <I haven't looked at the link, but the relevant spec is frequency
> <resolution in Hz. And the relevant measurement is NOT the traditional
> <2-Tone test, but the occupied bandwidth, measured by accumulating peaks
> <over a period of time with a series of dits around 30 WPM, or speech, or
> <RTTY.
>
> <73, Jim K9YC
>
> ## Freq resolution on the original Tiny SA (2.8" screen) is just a minimum
> of 3 khz.
>
> ## One the updated Ultra version (4.0" screen) resolution is now down to
> 200 hz.
>
> ## Several folks told me that the Tiny SA was useless for IMD testing, due
> to it's 3 khz resolution. Apparently somebody listened, and the newer /
> bigger version, with it's 200 hz resolution, should fare better.
>
> ## yes, I know the 2 tone has limitations. Like 2 tone results can
> easily be skewed by simply tweaking the tone spacing. With a 2 tone,
> everything is in a steady state, including drive levels, PO, ALC, bias,
> B+ / Vdc etc, etc.
>
> ## I have experimented with pulsed 2 tones, and also a 3 tone, and also
> white + pink noise, and also plane speech. The white + pink noise works
> pretty good, albeit it also renders everything in a steady state.
>
> ## I would also want to use the SA to measure harmonic attenuation on some
> of my many HB / modified commercial amps. One of the G stations on FB
> built a hb attenuator in a box, then added an additional BNC attenuator on
> the BNC output to the SA. A pair of SO-239's used for the amp in
> /out..then to a DL setup. Worked superb on his HB tube amps..and that was
> using the Tiny SA..with it's 2.8" screen..... which of course won't work
> with IMD testing.
>
> ## heck, this ultra version even has the waterfall display + SA....one or
> the other, or both. It also has a RF signal gen built in. One of the
> pundits was comparing it to his lab grade gear at work..and it fared pretty
> good. Huge improvement over the original unit.
>
> Jim VE7RF
>
>
> ------------------------------
>
> Message: 3
> Date: Sat, 6 May 2023 07:18:28 +0800
> From: Alek Petkovic <vk6apk@bigpond.com>
> To: amps@contesting.com
> Subject: Re: [Amps] Anybody still building with the GS-35b ?
> Message-ID: <e85bb9c5-2e53-b2f9-c822-32ffb71d1362@bigpond.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> YES.
>
> I have just built a GS35B? 6m amp loosely based on the YU1AW drawings
> and my best mate John, VK6JX, has built a GS35B 2m amp for EME, also
> from the YU1AW drawings.
>
> Both amps are working successfully and the tubes can be bought for a
> song when compared to what else is out there.
>
> 73, Alek VK6APK
>
>
> On 6/05/2023 12:25 am, Mark Foltarz via Amps wrote:
> > I'm doing a conversion on my SB-230 using a gi7b? tube.
> > Just wondering if builders are still using the?GS-35b.Seems like they are
> > still plentiful and seem to be a good tube.
> > Looking for input before I try and get a few and some sockets.
> > tnxde WA4AMMark
> >
> >
> > | | Virus-free.www.avg.com |
> >
> > _______________________________________________
> > Amps mailing list
> > Amps@contesting.com
> > http://lists.contesting.com/mailman/listinfo/amps
>
>
> ------------------------------
>
> Message: 4
> Date: Sat, 6 May 2023 08:32:17 +0800
> From: John Sparkes <vk6jx@bigpond.net.au>
> To: Alek Petkovic <vk6apk@bigpond.com>
> Cc: amps@contesting.com
> Subject: Re: [Amps] Anybody still building with the GS-35b ?
> Message-ID: <4C2D5294-7D92-4721-9E75-EA0EF246FBFF@bigpond.net.au>
> Content-Type: text/plain; charset=utf-8
>
> Hi Mark
> It is a great tube. And, you don?t need a socket - Alek and I cut out a hole
> in the chassis and I used 3 little L brackets to hold the grid ring hard onto
> the chassis. Then, a couple of stainless radiator clamps around the Fil and
> Fil/Cathode rings under the chassis for filament and input matching circuit
> connections. Works great.
> Best 73,
> John VK6JX
>
> > On 6 May 2023, at 7:18 am, Alek Petkovic <vk6apk@bigpond.com> wrote:
> >
> > ?YES.
> >
> > I have just built a GS35B 6m amp loosely based on the YU1AW drawings and
> > my best mate John, VK6JX, has built a GS35B 2m amp for EME, also from the
> > YU1AW drawings.
> >
> > Both amps are working successfully and the tubes can be bought for a song
> > when compared to what else is out there.
> >
> > 73, Alek VK6APK
> >
> >
> >> On 6/05/2023 12:25 am, Mark Foltarz via Amps wrote:
> >> I'm doing a conversion on my SB-230 using a gi7b tube.
> >> Just wondering if builders are still using the GS-35b.Seems like they are
> >> still plentiful and seem to be a good tube.
> >> Looking for input before I try and get a few and some sockets.
> >> tnxde WA4AMMark
> >>
> >>
> >> | | Virus-free.www.avg.com |
> >>
> >> _______________________________________________
> >> Amps mailing list
> >> Amps@contesting.com
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> End of Amps Digest, Vol 245, Issue 5
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