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May 24, 2019, 01:29:20 AM *
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 1 
 on: Today at 12:25:07 AM 
Started by KK4YY - Last post by KK4YY
I picked up a 1948 Hallicrafters S-51 "Sea Farer" receiver a few years ago from a local junque shop for small money. It was in decent shape, but was missing all four of its 6SS7 tubes (all the others tubes were there). Not having any 6SS7 tubes in my stockpile, the radio went on a shelf... and languished.

Today I decided to see if the old girl worked. I made four tube socket adapters so I could use 6BJ6's (which I did have) in place of the 6SS7's. I plugged them in, turned it on, and... nothing. I found that the internal speaker was shot. Connecting an external speaker, the audio was there, but very low. I found a bad solder joint on the audio gain pot and, once repaired, the audio came booming out. Nice! It's no world-beater for sure, but it doesn't sound bad at all.

I think with a bit more cleaning of dirty switch contacts and such, the S-51 just might make it into the station line-up here. And, according to the tag inside, it was "born" on May 26, 1948 so this Sunday will be its 71st birthday. I'll have to hurry-up with the repairs now I wouldn't want it to miss the party!


Don

 2 
 on: Today at 12:13:11 AM 
Started by KK4YY - Last post by KK4YY
Maybe the Italian space shuttle used vacuum tubes. That would explain why nobody ever heard of it.

 3 
 on: Yesterday at 10:59:29 PM 
Started by KK4YY - Last post by Opcom
please tell me what vacuum the space shuttle used!  Shocked  The Russian one maybe - but even that is doubtful as it was very up to date when built!

 4 
 on: Yesterday at 08:21:46 PM 
Started by KK4YY - Last post by KD6VXI
Those are FOR the shuttle.  Not FROM.

As such, not worth nearly what they are asking.

It's those grammar things that tell you you know your shit vs you know you're shit lol.  Can't remember where I heard that one, but I love it.

Not directed at anyone, either.

--Shane
KD6VXI

 5 
 on: Yesterday at 07:50:48 PM 
Started by Ac8wp - Last post by Ac8wp
Hello all. I have 2 rca bta-1r transmitters of which I would like to convert to 160m and 75m. I was wondering if anyone had a tank curcuit design that I could use? I planned on not using a band switch and just using 1 transmitter for each band. Im new with designing tank curcuit's so any info anyone can provide would be much appreciated.
Thanks
AC8WP

 6 
 on: Yesterday at 06:27:01 PM 
Started by KK4YY - Last post by KK4YY

Would you spend $2000 for 8 octal tube sockets?
No?

What if I told you they were genuine, vintage, original, from the Space Shuttle?
Now what do you say, hmm?

https://www.ebay.com/itm/SOCKET-tube-MILITARY-SPEC-Space-Shuttle-octal-amphenol-5692-B65-METAL-SEAT-BASE/253679604067?hash=item3b107b9163:g:ftUAAOSwH2VaSmHJ


P.S. This is definitely NOT my listing.

 7 
 on: Yesterday at 01:26:20 PM 
Started by W1KSZ - Last post by W1KSZ
Thanks for the replies. If I decide to cobble up some replacement,
my choice would be the Heil D-104 cartridge replacement.

I have done two D-104's this way and they sound great on AM.

I was hoping to find a drop-in replacement for the Turner, so I
will keep on looking for now.

Tnx es 73, Dick, W1KSZ

 8 
 on: Yesterday at 11:04:18 AM 
Started by W3GMS - Last post by W3GMS
Thanks for all the great pictures Nick.   Next year its on our list to attend.

Joe-W3GMS

 9 
 on: May 22, 2019, 02:29:10 PM 
Started by W3GMS - Last post by K4NYW
My photos are now posted here -
http://www.virhistory.com/ham/dayton-19.htm
And my photos from a visit to Fair Radio are here -
http://www.virhistory.com/ham/fair-19.htm

Great fun was had by all!
Cheers,
Nick

 10 
 on: May 22, 2019, 01:57:46 PM 
Started by W1KSZ - Last post by PA0NVD
Hi Dick
I completely agree with Don, those electret elements sound great. I also use one for my Philips transmitter with a small adjustment to get a little less low end, just like Don. And you cen get them both inj noise canceling and in no-noise canceling versions. The noise canceling version has little holes drilled in the backside PCB so the sound can enter also from the back. I used them in my UL airplane with success.

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