UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Vintage Test Gear and Workshop Equipment

Notices

Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders.

Reply
 
Thread Tools
Old 1st Jun 2019, 2:17 pm   #1
ex 2 Base
Pentode
 
Join Date: Nov 2009
Location: Scarborough, North Yorkshire, UK.
Posts: 247
Default Cirkit FET dip oscillator

Cirkit remember them. About 30 years ago I assembled one of their kits. I have 5 coils, should there be six ? A couple of the coils have slight damage, I also the oscillator and sheet steel container. Can any one supply me with or point me in the right direction to obtain a copy of the original instructions. ted
ex 2 Base is offline   Reply With Quote
Old 1st Jun 2019, 5:44 pm   #2
mickm3for
Pentode
 
Join Date: May 2015
Location: Chatham, Kent, UK.
Posts: 172
Default Re: Cirkit Fet dip oscillator

Hi i think it is this one ??
Attached Files
File Type: pdf G3WPO-FET-Dip-Oscillator-Radcom.pdf (1.46 MB, 89 views)
mickm3for is offline   Reply With Quote
Old 2nd Jun 2019, 1:48 am   #3
Bazz4CQJ
Nonode
 
Bazz4CQJ's Avatar
 
Join Date: Apr 2009
Location: Oxfordshire, UK.
Posts: 2,479
Default Re: Cirkit Fet dip oscillator

If you also want to take a look at something describing the various different uses of GDO's in general, the manual for the Megacycle 59 GDO is a very good place to look https://www.pa3esy.nl/meetinstrument...urements59.pdf

B
__________________
We know there are known unknowns. But there are unknown unknowns ones we don't know we don't know.
Bazz4CQJ is offline   Reply With Quote
Old 3rd Jun 2019, 7:35 pm   #4
Chris55000
Heptode
 
Join Date: Aug 2007
Location: Walsall Wood, Aldridge, Walsall, UK.
Posts: 759
Default Re: Cirkit FET dip oscillator

Hi!

I've a feeling I've got an original copy of that Radio Comms mag. in my "Leaning Towers Of Pisa" in my bedroom somewhere!

I'll see if I can find it & get it scanned – unfortunately I'm off ill with foot pain at the moment so it may be a few days!

Watch this space!

Chris Williams
__________________
It's an enigma, that's what it is! This thing's not fixed because it doesn't want to be fixed!
Chris55000 is online now   Reply With Quote
Old 3rd Jun 2019, 9:00 pm   #5
ex 2 Base
Pentode
 
Join Date: Nov 2009
Location: Scarborough, North Yorkshire, UK.
Posts: 247
Default Re: Cirkit FET dip oscillator

Many thanks to all readers, I've now got a copy of the details from mich3for, I remember the article in Radcom. I was a member of RSGB and I made quite a few of the construction articles in Radcom. Ted
ex 2 Base is offline   Reply With Quote
Old 3rd Jun 2019, 10:05 pm   #6
G8HQP Dave
Dekatron
 
Join Date: Sep 2008
Location: Solihull, West Midlands, UK.
Posts: 4,811
Default Re: Cirkit FET dip oscillator

I have one of those. Some of the Cirkit kits were issued with an unauthorised component change: the RF chokes L2 and L3 were wrong (low Q, possibly?) and this stopped the circuit from working properly on all ranges. When I contacted them they quickly sent me the right ones and then the GDO worked fine. I only mention this because it may be that some people still have the wrong chokes and wonder why the thing doesn't work properly.
G8HQP Dave is offline   Reply With Quote
Reply

Thread Tools



All times are GMT +1. The time now is 4:01 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright ©2002 - 2019, Paul Stenning.