Forums :: NEW! Web Resources :: Features :: Photo Gallery :: Vintage Radio Shows :: Archives
Support This Site: Contributors :: Advertise


It is currently Oct Sun 24, 2021 4:03 am


All times are UTC [ DST ]





Post New Topic Post Reply  [ 6 posts ] 
Author Message
 Post subject: Need Schematic for old Heathkit SG-6 Signal Generator. Mods
PostPosted: Sep Wed 08, 2021 8:07 pm 
New Member

Joined: Sep Wed 08, 2021 7:59 pm
Posts: 7
Location: Saint Augustine, Florida Area
Greetings,

Yes, am having trouble finding a good clear copy of the schematic for the Heath SG6 signal generator. And am interested in any suggested mods for that unit. Thank you kindly.

What was found on the web was not clear or suitable. Yes, there was a schematic made available several years ago, but lost track. Cheers. //Mark


Top
 Profile  
 
 Post subject: Re: Need Schematic for old Heathkit SG-6 Signal Generator.
PostPosted: Sep Wed 08, 2021 10:15 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 3779
Location: Seattle WA US
Good SG-6 manual available at:
https://www.vintage-radio.info/heathkit/


-Chuck K7MCG


Top
 Profile  
 
 Post subject: Re: Need Schematic for old Heathkit SG-6 Signal Generator.
PostPosted: Sep Wed 08, 2021 11:47 pm 
Member
User avatar

Joined: Nov Sat 07, 2009 11:37 pm
Posts: 2921
Location: Sayreville, NJ 08872
Thought I posted this earlier but maybe I didn't.
Life is what it is.
Quick grab off the web and a little diddling with some software.
Left click mouse over picture to enlarge.
Attachment:
SG6-1.jpg
SG6-1.jpg [ 547.49 KiB | Viewed 314 times ]

_________________
Pete, WA2CWA - "A cluttered desk is a sign of genius"
https://www.manualman.com


Top
 Profile  
 
 Post subject: Re: Need Schematic for old Heathkit SG-6 Signal Generator.
PostPosted: Sep Thu 09, 2021 12:32 am 
New Member

Joined: Sep Wed 08, 2021 7:59 pm
Posts: 7
Location: Saint Augustine, Florida Area
Big thanks, Pete !! and thank you, as well, Chuck.

Pete - - that copy was crystal clear and made all the difference. I'm impressed. Likewise with the zoom option here.

As for the SG6 sig generator here, it's a recent EBay acquisition. So far, have found three components that were not fully soldered, with one end just inserted into the solder slot/hole, unsoldered. So, what I initially thought were intermittant tubes turned out to be easy solder repairs. The schematic also refers to a 10k pot in the RF output, whereas the pot in the rig here is only 1-k. That very issue was raised here on AntiqueRadios .com some time ago. So, time for further checks of components vs the schematic.

Off Subject: The signal generator just reviewed in the October 2021 'QST' is a SIGLENT SDG-1062x. I saw no mention in the three-page review on where the equipment is made, though SIGLENT is a Chinese company, and so the 1062x is made there. It'd be great if a more local company, such as B&K Precision, came out with a comparable model with a modest price. Lots of us would grab one in a heartbeat. Ciao.


Top
 Profile  
 
 Post subject: Re: Need Schematic for old Heathkit SG-6 Signal Generator.
PostPosted: Sep Thu 09, 2021 4:10 am 
Member

Joined: Jun Sat 15, 2019 7:43 pm
Posts: 1469
The 1K pot is correct. The 10K resistor in the cathode of the oscillator should also be 1K.

DM


Top
 Profile  
 
 Post subject: Re: Need Schematic for old Heathkit SG-6 Signal Generator.
PostPosted: Sep Thu 09, 2021 5:47 am 
Member
User avatar

Joined: Nov Sat 07, 2009 11:37 pm
Posts: 2921
Location: Sayreville, NJ 08872
Mark MM wrote:
Big thanks, Pete !! and thank you, as well, Chuck.

Pete - - that copy was crystal clear and made all the difference. I'm impressed. Likewise with the zoom option here.

Off Subject: The signal generator just reviewed in the October 2021 'QST' is a SIGLENT SDG-1062x. I saw no mention in the three-page review on where the equipment is made, though SIGLENT is a Chinese company, and so the 1062x is made there. It'd be great if a more local company, such as B&K Precision, came out with a comparable model with a modest price. Lots of us would grab one in a heartbeat. Ciao.


Thanks - I'm getting good at making bad paper stuff look good :D

As far as SIGLENT, I don't think people much care in today's society where stuff is made as long as it's good, reliable, and can be serviced in the U.S. SIGLENT does have a location in Solon, Ohio. https://siglentna.com/

_________________
Pete, WA2CWA - "A cluttered desk is a sign of genius"
https://www.manualman.com


Top
 Profile  
 
Post New Topic Post Reply  [ 6 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: pixellany and 14 guests



Search for:
Jump to:  


































Privacy Policy :: Powered by phpBB