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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+2m\s+GS35B\s+Amplifier\s*$/: 9 ]

Total 9 documents matching your query.

1. [Amps] 2m GS35B Amplifier (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sat, 1 Oct 2022 07:34:57 +0800
G'day all. I've been helping my friend John, VK6JX, who is not a subscriber to this group, with the building af a "1 x GS35B 2m Lazy Builders PA" as described at https://www.qsl.net/yu1aw/VHF_PA/PA%2
/archives//html/Amps/2022-09/msg00056.html (8,562 bytes)

2. Re: [Amps] 2m GS35B Amplifier (score: 1)
Author: David G4FTC <g4ftc@hotmail.com>
Date: Sat, 1 Oct 2022 08:54:03 +0000
Hi Alek, I have a 70cm GS35b amp which exhibits most of the characteristics which you describe. My amp is based upon the design of PA3CSG https://pa3csg.nl/?page_id=17 . Also see VK3NX's comments htt
/archives//html/Amps/2022-10/msg00000.html (10,307 bytes)

3. Re: [Amps] 2m GS35B Amplifier (score: 1)
Author: Paul N1BUG FN55mf <paul@n1bug.com>
Date: Sat, 1 Oct 2022 08:52:33 -0400
For whatever it may be worth, my 2m GS35b amp doesn't show any tuning drift at all running with 75 watts drive and 1300 watts out. It uses a quarter wave tubular plate line. Efficiency is about 55% w
/archives//html/Amps/2022-10/msg00001.html (11,857 bytes)

4. Re: [Amps] 2m GS35B Amplifier (score: 1)
Author: David G4FTC <g4ftc@hotmail.com>
Date: Sat, 1 Oct 2022 15:01:49 +0000
Hi Paul, You could be lucky with your tube. Googling "GS35b tuning drift" will yield many examples. David G4FTC For whatever it may be worth, my 2m GS35b amp doesn't show any tuning drift at all runn
/archives//html/Amps/2022-10/msg00004.html (13,967 bytes)

5. Re: [Amps] 2m GS35B Amplifier (score: 1)
Author: Paul N1BUG FN55mf <paul@n1bug.com>
Date: Sat, 1 Oct 2022 14:28:48 -0400
Hi David, That could be. I have two more tubes I should test to see how they behave in the amp. Paul N1BUG You could be lucky with your tube. Googling "GS35b tuning drift" will yield many examples. D
/archives//html/Amps/2022-10/msg00006.html (15,147 bytes)

6. Re: [Amps] 2m GS35B Amplifier (score: 1)
Author: Steve <g8gsq72@gmail.com>
Date: Sun, 2 Oct 2022 14:12:50 +0100
You mention adding 'the ability to adjust output loading'. What was added and where? The original circuit does allow the loading to be altered, just not in the way that you might be used to with 'tun
/archives//html/Amps/2022-10/msg00007.html (10,793 bytes)

7. Re: [Amps] 2m GS35B Amplifier (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Mon, 3 Oct 2022 06:57:16 +0800
OK Steve. Thanks for your valuable input. Firstly, the loading adjust is very simple. Both the tune and load capacitors are simply shhets of copper. The tune plate is wound in and out by a threaded r
/archives//html/Amps/2022-10/msg00008.html (13,792 bytes)

8. Re: [Amps] 2m GS35B Amplifier (score: 1)
Author: Steve <g8gsq72@gmail.com>
Date: Mon, 3 Oct 2022 08:46:37 +0100
Cc and C1 is what the two variable caps are labelled in the original circuit, there's no special meaning beyond that. Cc is the series coupling from the output, C1 the shunt capacitor. I'd say it's m
/archives//html/Amps/2022-10/msg00009.html (12,257 bytes)

9. Re: [Amps] 2m GS35B Amplifier (score: 1)
Author: Aleksandar Petkovic <vk6apk@bigpond.com>
Date: Mon, 3 Oct 2022 15:55:16 +0800
Yep. All understood mate. Thanks. I'll forward this immediately to John and I've just arranged to be at his place at 9am tomorrow (Tuesday 01:00UTC) Yes, he did the VNA looking back towards the resis
/archives//html/Amps/2022-10/msg00010.html (14,041 bytes)

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