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Hallicrafters SX-117 for Sale Nice cosmetic condition. All tubes test fine on my Sencore TC-142. Strong audio with no ripple but the only thing I could hear was the IF band (weakly). Some signal tracing divulged IF transformer T7 to be open. So if you have an extra T7 (or T5, T6, or T8) and a couple of hours this receiver might work for you. Price is $165.00 (OBO) plus shipping, insurance, and receipt confirmation from 48350 – or local pick-up, of course. Cash, personal check or PayPal F/F please. Serial number #11700 4403011 Photos here: https://www.dropbox.com/scl/fo/igtjazgcohol50t06rhoq/AJyJXQdGTt8E9a7TAtKopf4?rlkey=huycmljvajvwcka5fc9ldcsqw&dl=0 Thanks for your consideration. 73, Jeff W8KZW Davisburg, MI W8KZW@... (248) 464-2363

I recently read “if anyone knows of any news item concerning someone electrocuted by an AC/DC radio perhaps they could post a link. I have never heard of this happening in real life. ..etc “ Although, the actual words written may be true [ I have no proof one way or the other], I would not want to trivialize such a situation, and perhaps lull someone into a bad situation. Some related reading material that is rather new, but.. https://incompliancemag.com/electric-shock-from-radios-a-review/ -- don va3drl

I, unfortunately, had to scrap one of these receivers owing to animal infestation and severe chassis corrosion. I have the following good parts, as removed and checked. Complete knob set, both coil assys, power xformer, volumn control, bandspread dial (exe), main dial (good), BFO assy, and both IFTs. Also have one SX-25 power xformer left. $25 plus postage.Offers accepted. TNX Jeep K3HVG

Only used on 80 and 40 meters. Good on CW. About 40 watts out. Slight chirp but no one is going to tell you that. :-) Never tried voice (AM). Comes with transmitter, receiver and nothing else. No KEY, No Crystals. some holes in the chassis but not my doing. the only hole i made was to mount a 150v zener diode to stabalize the screen voltage. The cabinet has bee repainted but not too bad of a job. any questions? ask. $120 shipped. paypal or zelle. -- Joe M Braswell

Good morning all , I've completed the replacement all the components in the selectivity RC Circuits, tested associated tubes, and confirmed all is working, except the .5 kc selectivity. No improvement. Next steps 1. Check 2.2 pF cap C85 2. Check 390 pF caps C83 & 84 3. Align 50 kc IF I did confirm the grounding of the RC circuit when in .5 kc position. The selectivity switch is working as expected. 73 Steve w8tow

Hi all, Just got my "dream receiver"...SX-115! It is a beautiful receiver inside and out. After careful power up, no hum, and it works, mostly. The sole issue signal in the 0.5 kc bandwidth are about 60 dB lower than any other bandwidth. I carefully cleaned the selectivity switch, inspected the associated resistors, (I didn't desolter them and measure R yet) tho. I've replaced all the .01 uF caps in the selectivity circuit. Per the manual, in 0.5 kc bw, all resistors are shorted. That is happening. So, why would the receiver have an attenuated sig on 0.5 kc only? Any suggestions? Thanks and 73 Steve W8tow

What winter projects do you have lined up. I have an SR-400 Cyclone. I got it from a fellow who, unsuccessfully, attempted to upgrade it to a Cyclone II. It looks like a complete strip and rebuild from the first 1650 IF amp through the second 1650 IF amp. Also have a nice looking SR-500, still looking for a good set of original 8236's it. And that is it...... I am now the proud owner of many empty shelves, where old boat anchors once sat. Walt Cates, WD0GOF https://wd0gof.com/Hallicrafters A majority of acceptance is not proof of correctness. https://wd0gof.com/bible-study/commentaries/

I am in need of both tuning knobs for my SX-122A (same knobs as for an SX-122). Existing knobs have been butchered by PO, and are not salvageable at all. Please let me know if you can turn loose of one or two in mechanically and cosmetically great condition. 73, Bill AI5RP / KJ5BNE/AE Arlington, Texas

I have a 4 digit serial number around 4500. It’s got a black cabinet and has round Hallicrafters marked meters recessed in the front panel. Any wild guess on what year this transmitter was made? Thanks, Tom N5AMA

Well, I did it again.... brought home a sad looking S-38C. It isnt in bad shape, all the knobs and parts are there. It doesnt play, however. I did bring it up on a variac, with a dim bulb . All I get is a slight hum out og the speaker... Guessing tome for new filter caps ( no biggie). In looking at various schematics, I am finding both 35z5, 50L6, 12sq7, 12sa7, 12sk7 , and 12sa7 12sk7 , 12sg7 35z5, 50L6 as tube line ups. Seeing as mine had a 6sk7 in it (my guess someone had low line voltage?), I am trying to figure out which line up is correct. Is there an easy way to do this , other than looking at tube socket wiring (and who knows if mine is correct)? Any ideas??? Howard

Test -- I seem to be locked out of all Google Groups! Mike/ K5MGR Mike Langner 929 Alameda Road NW Albuquerque, NM 87114-1901 (505) 898-3212 home/home office (505) 238-8810 cell mlangner@...

Haven't done much Hallicrafters lately but I always try to keep an eye out for something that might interest me. I found this on GoodWill's auction site and I thought they wanted too much for it so the auction ran and no bids. It was relisted with the same price and after some mental arm twisting with myself I pulled the trigger on it. It arrived in good shape and was packed very well. After unwrapping all the bubble wrap I decided to live dangerously and plugged it in. I turned it on and no hum - big surprise - and the only thing that was irritating was scratchy noises when tuning. All that aside it tuned in my favorite station just fine and the clock (Telechron mvt) kept perfect time the couple days I left it plugged in. Once out to the shop and getting the dust blown out I cleaned the tuning capacitor shaft and the scratching went away. I will put it up on the shelf and re-cap it after a couple other projects get finished. Here's some pics... 73, -- Justin B. KI5GKD

Following items are for sale. Heathkit AT-1 Transmitter with AC1 Tuner $85 + shipping Hallicrafters S-107 5 Band Shortwave Receiver $70 + shipping (reduced price) Please click the link below and read the page for further details on the above listed items. Items For Sale 73 Mike W5RKL https://www.w5rkl.com

I have the following items up for sale. Heathkit AT-1 Transmitter with AC1 Tuner $85 + shipping Hallicrafters S-107 5 Band Shortwave Receiver $75 + shipping Please click the link below and read the page for further details on the above listed items. Items For Sale 73 Mike W5RKL https://www.w5rkl.com

To all the fans of the SR-160 and the SR-500. I have upgraded the "DRIVER & PA OPTOMIZATION" document on my website. I have added more information and rewritten it to be more friendly to the new, developing technicians. You can download the new document at: http://wd0gof.com/halli.../technical-discussions/sr-160-500/ . Click on "DRIVER & PA OPTOMIZATION. 73 Walt Cates, WD0GOF https://wd0gof.com/Hallicrafters A majority of acceptance is not proof of correctness. https://wd0gof.com/bible-study/commentaries/

I've known this since the late '70s, but never knew what happens electrically and what the failure mode is. Has anyone here opened up a transformer that failed in this way and found an open or a short? Halden VE7UTS

I have been working on a hallicrafters SX17 receiver and so far work is progressing (audio and detector circuit restored and interstage transformer replaced) although a bit slowly and cautiously. Yesterday, when I removed it for the first time, I discovered that in the position of the 6J5 'silencer' triode, was actually a 6H6 double diode. This puzzled me initially until I Google and looked at the datasheets and discovered that the 6H6 can be used for the noise limiter function. Both the early and late versions of the circuit diagrams I have so far found both show the 6J5 in that position. It is no wonder that the voltages don't match the table in the manual! However, was this modded by someone, or was it a factory design? I couldn't see any obvious indication of changes to the wiring, only that some components were different. However, someone gave me a hint to have a look at the valve base, which I did this morning and it is stamped 6H6! This does suggest that the modification was added at the factory. I wonder, does anyone have or come across a circuit diagram showing this modification, i.e. a 6H6 rather than a 6J5 in the noise limiter circuit? Has anyone already reverse engineered it perhaps? I am minded to reverse engineer it anyway, but it might help if there is already an updated circuit in existence somewhere.

I’m trying to reconnect my 44/117 station to use again after several years. I don’t see a Dow Key in the wiring between the two. I don’t want to transmit into my receiver (of course). The 44 manual shows a typical interconnection (Fig. 5, page 5). It shows the 117v coaxial relay connected in series with the 44 power which seems odd plus no showing of a control to the relay. Help unraveling the connections will be appreciated. eBay shows lots of Dow Key relays (6, 12, 24, 120 v) and lots of prices. I’ll probably need to buy one so a recommendation there would help too. I have a vague recollection that I might have sold mine quite some time ago. Thanks guys for the help. Skip Magnuson Spokane, WA

Don - Crap! I hadn't noticed I had fat-fingered that! I can see the confusion, now... 73, -- Justin B. KI5GKD

I’m still looking for any coils or tuning units for my HT-9. If you have anything available please email me what you have and what you are asking for them with shipping. Thanks, Tom N5AMA n5ama@... 713-417-5959