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eHam Forums => Boat Anchors => Topic started by: W4OP on March 28, 2013, 07:35:03 PM



Title: 8 Position terminal strip needed
Post by: W4OP on March 28, 2013, 07:35:03 PM
My current  restoration is the SBE 33 transceiver. One of the 8 position phenolic terminal strips is broken. This is 8  lugs  that mounts to the chassis via lug 2 and 7. Any out there?

Dale W4OP


Title: RE: 8 Position terminal strip needed
Post by: W9GB on March 28, 2013, 07:45:20 PM
CINCH - Lug-Type Terminal Strips : Spec Sheet
http://www.alliedelec.com/images/products/datasheets/bm/CINCH_CONNECTORS/70152915.pdf

You desire the Cinch 56C strip

MCM Electronics
CINCH Part # 29F593
http://www.mcmelectronics.com/product/27-3960&scode=GS401&CAWELAID=220317611?catargetid=1545764029&cagpspn=pla&gclid=CJb51oX0oLYCFc9AMgodcU4AKg

Allied Electronics, 56C, part # 70152923
http://www.alliedelec.com/search/productdetail.aspx?SKU=70152923


Title: RE: 8 Position terminal strip needed
Post by: W4OP on March 30, 2013, 04:30:05 PM
Thanks for the heads up Greg. I was placing an order with Newark for electrolytics anyway, and they too carried the 8 position strip.
I must say, I am really impressed by the 33. I previously restored a 34 and think the 33 is superior- certainly the VFO is a lot more stable and tracks very well. Except for the stainless steel front panel and cabinet the rig is all aluminum and light weight. Excellent construction.
I am adding an X-Lock to make it even more usable on-air, but have had QSO's as is.
I had not previously seen the thin little PL-500 finals- very cute.
All in all, a nice little art deco rig and way ahead of its time.

The rig came to me as non working. After checking the P.S. voltages, I put the Spectrum Anbalyzer on and looked at the oscillators. No HF het signal. As all of the transistors are socketed I was able to check the HF osc device. It should have been a Ge PNP but some oaf had plugged in a Si NPN.
I put in an RF Ge PNP device and the rig came to life.
I'll have photos on my WEB site as soon as the X-lock is installed.
Dale W4OP


Title: RE: 8 Position terminal strip needed
Post by: W9GB on March 30, 2013, 05:58:33 PM
The PL500 (27GB5) was an odd TV sweep tube, 27 volt filament, 9-pin Magnoval,
12 watts, and could handle a peak anode voltage of 7,000 Volts.
The PL500/PL504 seems to have been the most popular sweep tube for
Western European black & white TVs.

Tesla coil builders use it, due availability and price.
http://www.sciencezero.org/vasil/teslina/stdf.html

German mfg. (Braun) used the PL500 tube for audio amplifiers.
Then you get the current audiophiles, look at this photo (how many tubes?)
http://www.audioasylum.com/forums/otl/messages/3/34846.html

Side Band Engineers was ahead of the time with the SBE model 33:
Light weight (20 lbs), solid-state receiver (germanium transistors, as you noted),
and hybrid transmitter.


Title: RE: 8 Position terminal strip needed
Post by: W4OP on March 30, 2013, 06:33:49 PM
I was surprised at how inexpensive the PL500's are today- around $7 each I believe.
Can't hurt to get a couple of spares. That 7KV is surpising.

Dale W4OP


Title: RE: 8 Position terminal strip needed
Post by: K1CJS on April 03, 2013, 03:54:58 AM
Sometimes you come across the unexpected in unexpected places.  I wasn't looking for it, but I saw what I believe was an eight position terminal strip at Home Depot in the electrical department one day a couple of months back.  You may try there if you need one in a hurry.


Title: RE: 8 Position terminal strip needed
Post by: W4OP on April 03, 2013, 06:34:41 AM
Thanks all.  I added several to my Newark order and they and the recap electrolytics arrived the next day.
While I await the X-Lock VFO stablizer, I continue to be amazed at this rig. I like it much more than the SBE 34.
Dale W4OP