EH Scott Radio Enthusiasts

The Fine Things are Always Hand Made

Steve Larrabee
  • Male
  • Woodstock, VA
  • United States
Share on Facebook

Gifts Received

Gift

Steve Larrabee has not received any gifts yet

Give a Gift

 

Steve Larrabee's Page

Latest Activity

Steve Larrabee commented on Steve Larrabee's blog post EH Scott Model 510 Tuner Service Manual/Alignment
"Would anyone have the 12 pin female plug with the key like on an octal tube base used on the Scott 510 tuner to connect to the power supply/amp chassis?  Thanks very much."
Jun 6
Steve Larrabee commented on Steve Larrabee's blog post EH Scott Model 510 Tuner Service Manual/Alignment
"510 Tuner question:  My chassis has an extra octal tube 6SC7 - shock mounted with rubber fastenings to the chassis on the back right portion (looking at the back).  This tube is not on the schematic or in the service manual but it appears…"
Jun 4
Steve Larrabee commented on Steve Larrabee's blog post EH Scott Model 510 Tuner Service Manual/Alignment
"Terrific, Kent.  Thank you.  I missed it in Late Sets when I looked before.  best, steve"
May 22
Kent King commented on Steve Larrabee's blog post EH Scott Model 510 Tuner Service Manual/Alignment
"Both the Owner's and Technical manuals for the 510 can be found in the Scott Info Archive link above. Set Folders -> Late Sets and you should find PDFs for your set. Good luck, you'll enjoy it when you get it playing. Kent"
May 22
Steve Larrabee posted a blog post

EH Scott Model 510 Tuner Service Manual/Alignment

I came into a 510 Tuner recently and have renewed the caps and resistors as necessary.  I have the schematic for the Tuner and also the Power Supply/Audio Amp.  I built my own power supply/amp with 6L6s and a 6SN7 and diode rectification because one did not come with the tuner.  Now I need the alignment instructions for the tuner or better yet, the Service Manual.  Would anyone out there have a .pdf that would help??  Thanks very much, best, Steve See More
May 21
Steve Larrabee commented on Steve Larrabee's blog post Shield Grid 9 Renewing...........
"I apologize for the apparent drop off on this topic - I could have sworn I wrote a closing comment after I got the SG-9 going in mid-April.  I had the SG-9 working very well with delicate tuning of both tuning shafts running separate variable…"
May 21
Joseph W Strickland commented on Steve Larrabee's blog post Shield Grid 9 Renewing...........
"Steve; Here is one source for large OD aluminum tubing in shorter lengths at reasonable price that I use: https://www.dxengineering.com/parts/dxe-at1506, Aluminum Tubing, 6063-T832, 3 ft., 2.000 in. OD, 0.058 in.Wall, No Slit, $6.60 each. The ID…"
Apr 4
Steve Larrabee commented on Steve Larrabee's blog post Shield Grid 9 Renewing...........
"Thanks, Norman:  I'll make some presentable shields, ground them and then cover them with the very nice copper lid of the SGA -- and only 550 people will know.  best,"
Apr 4
Joseph W Strickland commented on Steve Larrabee's blog post Shield Grid 9 Renewing...........
"Norman; Were either the Scott or Remier shields plated? Joe"
Apr 4
Norman S Braithwaite commented on Steve Larrabee's blog post Shield Grid 9 Renewing...........
"The original cast pot metal Scott tube shields are unobtainium but they are close copies of the Remler cast pot metal tube shields. They were even the same color! The Remler tube shields are hard to find but you are more likely to find the Remler…"
Apr 4
Joseph W Strickland commented on Steve Larrabee's blog post Shield Grid 9 Renewing...........
"Steve; OK, then it does indeed need additional shielding around the tubes even inside an already shielded enclosure. It is relatively easy in an IF strip to have oscillation develop if everything is not just right, particularly when the circuit is…"
Apr 3
Steve Larrabee commented on Steve Larrabee's blog post Shield Grid 9 Renewing...........
"OK -- The Shield Grid 9 article (starting on page 96) in the Info Archive parts list contains 4 #680 tube shields and the article further on mentions each tube in the SGA is individually shielded.  As I mentioned, I tried some homemade shields…"
Apr 3
Joseph W Strickland commented on Steve Larrabee's blog post Shield Grid 9 Renewing...........
"It would be nice if someone could post a picture of one globe tube shield here so we know what to look for. In the pictures of some Shield Grid 9 receivers shown in the Collector's Guide it appears that the copper shielding you removed was to…"
Apr 3
Steve Larrabee commented on Steve Larrabee's blog post Shield Grid 9 Renewing...........
"I put the SGA back onto the bakelite plate chassis and wired it up after I reformed all the solder connections on the set.  It's working for the first time: with a lot of oscillations but good control on the front panel.  It is tricky…"
Apr 3
Joseph W Strickland commented on Steve Larrabee's blog post Shield Grid 9 Renewing...........
"If the set used variable air trimmers to peak align the IF's, it may have had trimmers that allowed them to tune anywhere near the 130kHz frequency. Maybe it was just misaligned? Or perhaps had some fixed value padders remove or added? Yes the…"
Apr 1
Steve Larrabee commented on Steve Larrabee's blog post Shield Grid 9 Renewing...........
Apr 1

Steve Larrabee's Blog

EH Scott Model 510 Tuner Service Manual/Alignment

Posted on May 21, 2017 at 10:02pm 4 Comments

I came into a 510 Tuner recently and have renewed the caps and resistors as necessary.  I have the schematic for the Tuner and also the Power Supply/Audio Amp.  I built my own power supply/amp with 6L6s and a 6SN7 and diode rectification because one did not come with the tuner.  Now I need the alignment instructions for the tuner or better yet, the Service Manual.  Would anyone out there have a .pdf that would help??  Thanks very much, best, Steve 

Shield Grid 9 Renewing...........

Posted on March 13, 2017 at 8:00pm 33 Comments

Hi Kent:  I am working on a Shield Grid 9 now that is in very good shape. I have dismounted the SGA (shield grid assembly) because of low filament voltage on the three 22s - max I can get is 2 volts with 5 volts on the entry bus.  Taking that SGA off and opening it was much more of a chore than necessary because the designer apparently didn't think it would ever be required.  The paperwork discusses the short wave ability of the SG-9 and the need to change the coil in the 630 Antenna…

Continue

Comment Wall

  • No comments yet!

You need to be a member of EH Scott Radio Enthusiasts to add comments!

Join EH Scott Radio Enthusiasts

 
 
 

© 2017   Created by Kent King.   Powered by

Badges  |  Report an Issue  |  Terms of Service