Haigh Wobbulator is there sufficient interest for a PCB? - Page 5 - UK Vintage Radio Repair and Restoration Discussion Forum

Philips210 · 18th Jan 2022, 5:30 pm

My kit arrived today. Look forward to building it when time permits. Thanks Peter.

Regards,
Symon

Andrewausfa · 18th Jan 2022, 5:55 pm

Thanks Peter, a nice package in the post today.

Regards - Andrew

Trevor · 18th Jan 2022, 6:23 pm

Thanks Pete
delighted to receive my unit today
Well worth the money
Trev

turretslug · 18th Jan 2022, 9:04 pm

Mine turned up today, too- very pleased and impressed, a great project for the near future!

Thanks, Colin

cathoderay57 · 18th Jan 2022, 9:27 pm

Hi Peter, mine's here too. Many thanks for such good work.
Jerry

steve102 · 19th Jan 2022, 7:40 am

I received my kit yesterday thanks. Is there a list of the additional components that I need to obtain?

Sundog- · 19th Jan 2022, 8:03 am

Hi Peter, the kit arrived yesterday, it looks great!
Thank you.

Andrewausfa · 19th Jan 2022, 10:07 am

Quote:

Originally Posted by steve102

I received my kit yesterday thanks. Is there a list of the additional components that I need to obtain?

Hi Steve, there's a schematic (v2) a couple of pages back called Kincad Wobbulator and Timebase which has all the components listed on it.

Andrew

steve102 · 19th Jan 2022, 12:42 pm

Quote:

Originally Posted by Andrewausfa

Quote:

Originally Posted by steve102

I received my kit yesterday thanks. Is there a list of the additional components that I need to obtain?

Hi Steve, there's a schematic (v2) a couple of pages back called Kincad Wobbulator and Timebase which has all the components listed on it.

Andrew

Thanks Andrew, I'd missed that.

Boulevardier · 19th Jan 2022, 2:00 pm

Hi Peter
My kit arrived safely this morning. Excellent documentation included, and a superb quality PCB. Many thanks again for your generous and dedicated efforts on this project.
Mike

cathoderay57 · 22nd Jan 2022, 4:45 pm

Hi folks, I've assembled my kit. It worked first time. It's only run up on the bench and I've been testing it on the scope. Haven't tried to wobbulate anything yet. The outputs all seem to be doing what they are supposed to. Here's the frequency ranges I'm getting on the counter:
1. 342-644 KHz
2. 1.0-2.1 MHz
3. 2.9-6.1 MHz
4. 5.2-16.9 MHz
On Range 4 above about 10.4 MHz the frequency setting is unstable but I think this is because of the long wires to the range switch. Grabbing them together with my hand stabilises things so hopefully when I get it in the box I might be able to shorten them a bit and/or position them to avoid this problem.
Cheers, Jerry

Electronpusher0 · 22nd Jan 2022, 5:34 pm

Thanks for the update Jerry, glad it works!

I think you are right about the switch wires.

Peter

GeorgeChristofi · 26th Jan 2022, 10:43 pm

I would certainly be interested if a second batch comes into fruition. Sure, I have a commercial sweep generator but there is something inherently satisfying in using home builds.

eddie_ce · 27th Jan 2022, 9:27 am

George,

it is for the same reason that I have asked for my name to be put down for a second batch if there should be one.

I don't need one as I have several other options, but there is something satisfying in home build.

Electronpusher0 · 27th Jan 2022, 12:54 pm

There probably will be another batch, see post #76.

Peter

Vintage_RC · 28th Jan 2022, 10:37 am

Hi Peter, just to let you know my kit arrived yesterday.

Thanks, Alan

Andrewausfa · 31st Jan 2022, 10:09 pm

I started building the wobbulator tonight and came across a small issue, R11, I can't see it on the circuit diagram! Could someone point out if it's just my eyes or is it missing and if so, what value?

Thanks - Andrew

bc312 · 31st Jan 2022, 10:31 pm

Andrew

R11 is 1 megohm, and is connected to the junction of C7 (270pF) and the Gate of Q2, to Ground. It is missing from the schematic but is on the pcb.

Mike

Andrewausfa · 31st Jan 2022, 10:41 pm

Super thanks very much! Sometimes you can't see for staring and doubt yourself

Andrew

Electronpusher0 · 1st Feb 2022, 1:15 pm

I thought I had posted the schematic with the missing resistor but obviously I didn't.

Final Schematic attached.

Sorry about that.

Peter

18th Jan 2022, 5:30 pm	#81
Philips210 Octode Join Date: May 2007 Location: Redruth, Cornwall, UK. Posts: 1,988	Re: Haigh Wobbulator is there sufficient interest for a PCB? My kit arrived today. Look forward to building it when time permits. Thanks Peter. Regards, Symon

18th Jan 2022, 5:55 pm	#82
Andrewausfa Octode Join Date: Dec 2010 Location: St Ives, Cambridgeshire, UK. Posts: 1,127	Re: Haigh Wobbulator is there sufficient interest for a PCB? Thanks Peter, a nice package in the post today. Regards - Andrew __________________ Invisible airwaves crackle with life. Or they should do. BVWS Member

18th Jan 2022, 6:23 pm	#83
Trevor Heptode Join Date: Aug 2006 Location: Stoke-on-Trent, Staffordshire, UK. Posts: 934	Re: Haigh Wobbulator is there sufficient interest for a PCB? Thanks Pete delighted to receive my unit today Well worth the money Trev

18th Jan 2022, 9:04 pm	#84
turretslug Dekatron Join Date: Nov 2011 Location: Surrey, UK. Posts: 3,993	Re: Haigh Wobbulator is there sufficient interest for a PCB? Mine turned up today, too- very pleased and impressed, a great project for the near future! Thanks, Colin

18th Jan 2022, 9:27 pm	#85
cathoderay57 Octode Join Date: Oct 2017 Location: Bristol, UK. Posts: 1,839	Re: Haigh Wobbulator is there sufficient interest for a PCB? Hi Peter, mine's here too. Many thanks for such good work. Jerry

19th Jan 2022, 7:40 am	#86
steve102 Tetrode Join Date: Jan 2008 Location: Derby, Derbyshire, UK. Posts: 56	Re: Haigh Wobbulator is there sufficient interest for a PCB? I received my kit yesterday thanks. Is there a list of the additional components that I need to obtain?

19th Jan 2022, 8:03 am	#87
Sundog- Triode Join Date: Nov 2021 Location: Leighton Buzzard, Bedfordshire, UK. Posts: 32	Re: Haigh Wobbulator is there sufficient interest for a PCB? Hi Peter, the kit arrived yesterday, it looks great! Thank you. __________________ John

19th Jan 2022, 2:00 pm	#90
Boulevardier Octode Join Date: Sep 2017 Location: Bristol, UK. Posts: 1,119	Re: Haigh Wobbulator is there sufficient interest for a PCB? Hi Peter My kit arrived safely this morning. Excellent documentation included, and a superb quality PCB. Many thanks again for your generous and dedicated efforts on this project. Mike

22nd Jan 2022, 4:45 pm	#91
cathoderay57 Octode Join Date: Oct 2017 Location: Bristol, UK. Posts: 1,839	Re: Haigh Wobbulator is there sufficient interest for a PCB? Hi folks, I've assembled my kit. It worked first time. It's only run up on the bench and I've been testing it on the scope. Haven't tried to wobbulate anything yet. The outputs all seem to be doing what they are supposed to. Here's the frequency ranges I'm getting on the counter: 1. 342-644 KHz 2. 1.0-2.1 MHz 3. 2.9-6.1 MHz 4. 5.2-16.9 MHz On Range 4 above about 10.4 MHz the frequency setting is unstable but I think this is because of the long wires to the range switch. Grabbing them together with my hand stabilises things so hopefully when I get it in the box I might be able to shorten them a bit and/or position them to avoid this problem. Cheers, Jerry

22nd Jan 2022, 5:34 pm	#92
Electronpusher0 Octode Join Date: Jun 2016 Location: Bognor Regis, West Sussex, UK. Posts: 1,909	Re: Haigh Wobbulator is there sufficient interest for a PCB? Thanks for the update Jerry, glad it works! I think you are right about the switch wires. Peter

26th Jan 2022, 10:43 pm	#93
GeorgeChristofi Triode Join Date: Apr 2018 Location: Northampton, Northamptonshire, UK. Posts: 39	Re: Haigh Wobbulator is there sufficient interest for a PCB? I would certainly be interested if a second batch comes into fruition. Sure, I have a commercial sweep generator but there is something inherently satisfying in using home builds.

27th Jan 2022, 9:27 am	#94
eddie_ce Hexode Join Date: Aug 2010 Location: nr. Hannover, Germany Posts: 361	Re: Haigh Wobbulator is there sufficient interest for a PCB? George, it is for the same reason that I have asked for my name to be put down for a second batch if there should be one. I don't need one as I have several other options, but there is something satisfying in home build. __________________ Eddie BVWS Member. Friend of the BVWTM

27th Jan 2022, 12:54 pm	#95
Electronpusher0 Octode Join Date: Jun 2016 Location: Bognor Regis, West Sussex, UK. Posts: 1,909	Re: Haigh Wobbulator is there sufficient interest for a PCB? There probably will be another batch, see post #76. Peter

28th Jan 2022, 10:37 am	#96
Vintage_RC Hexode Join Date: Sep 2018 Location: Twickenham, London, UK. Posts: 398	Re: Haigh Wobbulator is there sufficient interest for a PCB? Hi Peter, just to let you know my kit arrived yesterday. Thanks, Alan __________________ Alan G6PUB, BVWS

31st Jan 2022, 10:09 pm	#97
Andrewausfa Octode Join Date: Dec 2010 Location: St Ives, Cambridgeshire, UK. Posts: 1,127	Re: Haigh Wobbulator is there sufficient interest for a PCB? I started building the wobbulator tonight and came across a small issue, R11, I can't see it on the circuit diagram! Could someone point out if it's just my eyes or is it missing and if so, what value? Thanks - Andrew __________________ Invisible airwaves crackle with life. Or they should do. BVWS Member

31st Jan 2022, 10:31 pm	#98
bc312 Pentode Join Date: Feb 2005 Location: Longfield, Kent, UK. Posts: 205	Re: Haigh Wobbulator is there sufficient interest for a PCB? Andrew R11 is 1 megohm, and is connected to the junction of C7 (270pF) and the Gate of Q2, to Ground. It is missing from the schematic but is on the pcb. Mike __________________ Leave me alone - I know what I'm doing. BVWS member, EUG Radio Bygones/Radiophile

31st Jan 2022, 10:41 pm	#99
Andrewausfa Octode Join Date: Dec 2010 Location: St Ives, Cambridgeshire, UK. Posts: 1,127	Re: Haigh Wobbulator is there sufficient interest for a PCB? Super thanks very much! Sometimes you can't see for staring and doubt yourself Andrew __________________ Invisible airwaves crackle with life. Or they should do. BVWS Member