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Hi, Y'all! Been a while since I bugged the collective so now I have a question. It's not Hallicrafters related but there is such a wealth of knowledge around here I figure somebody might be able to help. I picked up an old Lafayette HB-600 CB which is ailing. I turn it on and get a slight hiss from the speaker and when I key the mic I show about a 5 watt carrier but no modulation. That's just a little background info so here is where things might get interesting. I decided to go through the alignment procedures and have injected 455 KHz at the proper point and heard exactly zero tone so I started working forward and after I got past a mechanical 455 KHz filter and an IF can I got a good solid tone and could peak the next two IF cans. I have a stock of mini 455 IF transformers and I have ordered a ceramic 455 KHz filter from an AliExpress seller. should the ceramic filter work as a drop in or might I need to do some modifications? I know some may look at messing with an old CB as tantamount to blasphemy but CBs and SWL is what got me into Ham Radio when I was a wee shaver. 73, -- Justin B. KI5GKD

Hi, I’m looking to buy a Hallicrafters SR-500 Tornado transceiver and PS-500 in good physical and preferably working condition. If I can’t find an SR-500, I would consider buying an SR-160/PS-150. In 1970 a friend borrowed me an SR-160 when I first got my General, and I had a wonderful time working 75, 40, 20 meter SSB with it until I left for military duty after high school graduation. Here I am some 54 years later looking for some of that wonderful nostalgia of the SR-160/SR-500. Thanks. 73, Scott WA9WFA

(Since this is a diversion from the original topic (SR-500 Tornado), I assigned a new topic.) Thanks, Bob and Walt, Since the SR-160 and SR-150 both use 12DQ6B finals, wouldn't the sockets be the same and the same rewiring of sockets be required? On further examination of the 2 radios' schematics, I see that the circuits around the finals are a little different, so maybe there would be some additional changes needed there, too. I agree that the potential performance benefit would be small. That half of an S unit was, apparently, sufficient for some hams to buy an SR-500 instead of an SR-160 a several decades ago. Maybe it was just a bigger number on the front panel or the invoice. Cheers Halden

Hello, I am restoring a SX-117. A former owner replaced the original transformer by a transformer with a primary voltage of 220 Volt. The secondary voltage of this transformer is much too high. I would like to know if there is any info on the secondary voltage of the original transformer as I am looking for getting a replacement. 73s Wolfgang dk7cy

Hi, Lately I’ve been waxing nostalgic about the old Hallicrafters transceivers. A friend loaned me his SR-160 for several months back in 1971 while I was in Senior in High School and I used it for that summer before heading off to the Vietnam War. It was a wonderful transceiver! The premium Hurricane, Cyclone, and Tornado have fascinated me for many years but I never pursued them during my collecting years. The collecting years are long over and I’ve sold 99% of my collection with only a few left, but I’m still intrigued by those premium Halli transceivers. Maybe I need another one just to enjoy the nostalgia it gives. I’m thinking of buying a Tornado for my one last remaining SSB tube transceiver. The Hurricane and Cyclone scare me in terms of big size and complexity of repair. What about the Tornado? Do you Tornado owners find them easy or hard to repair? Are final amplifier tubes available or do you have to rewire the socket for something else? What do you Tornado owners think of them? Do you know of any working one’s for sale? Thanks. 73, Scott WA9WFA

I just finished pretty much a complete overhaul of a nice condition (physically) SX-28A. Replaced just about every resistor and all caps. Radio is working well except for a 120hz hum. When I switch the Bass in, the hum goes away. Yes, there is ripple on the plates of the 6V6’s, about 6vrms, but that is there independent of the bass switch position. The output side of the HV filter is clean, no ripple. I paralleled another 47uf 450v cap across the choke input cap and there was no difference. I double checked the wiring against the schematic along with component values. Is the schematic correct in this area? I found once schematic error maybe there is another? Thoughts? Tom W3TA

Just a note of appreciation for Walt Cates’ generosity In offering downloads of his SR 500 repair manual free of charge. I don’t own an SR 500 but sure appreciate his spirit. Hams like Walt make this such a wonderful hobby. 73, Mark AF6IM -- AF6IM www.parachutemobile.com

All, This Saturday is the Algonquin (Marlborough, MA) Amateur Radio Club Flea Market. Doors open at 9:00 AM for buyers, 6:30 AM for sellers Complete details here Algonquin Amateur Radio Club Among many other items, we will have the following for sale: 1) ** SOLD ** Hallicrafters Skybuddy working, in good overall condition 2) Hallicrafters SX-99 with original manual. Working. Could use DeOxIt They will be priced to move. Hope to see you there 73, Gene K1NR

? Thanks Larry! I really appreciate it. Our domestic and International clients seem to grow every day. Vintage HI-Fi restoration also seems to be hot. Pete, wa2cwa www.manualman.com On Sat, 8 Feb 2025 23:57:51 +0000 (UTC) "Larry Knapp via groups.io" <kc8jx@...> writes:

? Thanks Pete. I appreciate the complement. I find it very gratifying that my work helps someone bring a piece of equipment back to life. It also provides me with the joyful option of bringing a possibly bug invested, stored in a garage or basement for 50 of 60 years into a worthwhile and useful document that others can read, use and enjoy. Of course, one can find poorly scanned, incomplete, and highly marked up pages all over the Internet, but even when printed, crap is crap, and stuff is always lost in the transition. I just finished a military manual for a customer. Roughly 200 pages but easy to do even though every page, because of age, was brown. My machine can remove background paper color. But the hicker and hard part, were the five schematics. They were 14 inches high and 52 inches wide. And I decided these were to be done full size. A customer never has to assemble and tape any of my manual pages. This entire project started back in the mid 90's as a bonding project between father and son. Son was in his second high school year but didn't seem to have any idea about his future life endeavors. Since I was dragging boatanchors home to repair and get up and running, from every hamfest I went to, my collection of manuals for this stuff started to become a pain to manage. My son created database to manage all the manuals that I also kept collecting. He also suggested creating a catalog booklet, advertising in Electric Radio and a few other publications, and send out the catalog to all interested parties. I firmly believe this gave him a sense of business activities and helped firm up (or at least give direction) to his future. He also created my first web site and credit him for giving it its name. http://web.archive.org/web/20000621065933/http://www.manualman.com/ After high school he worked for a year before applying and being accepted at Boston Bible College at Hyde Park, MA. He felt he should earn the money to pay for college rather then taking it for granted. For 3 summers while in his college years, he worked at Lucent Technologies as a contractor and used the money earned for tuition. My apologies to the group for rambling, but I'm very proud of my son. I gave him a license manual when he was around seven. When he turned around 27, he finally found the time to become KB1JTP. Pete, wa2cwa On Thu, 6 Feb 2025 12:50:53 +0000 (UTC) "peteradio@... via groups.io" <peteradio@...> writes:

Well believe it or not, its been 20 years, this site has been active and strong for Hallicrafters Radios. Started in 2005 as a lark, I am amazed that we now have 1,078 members. With thanks to all our Hallicrafters Experts on this site and they are experts for sure. Its been educational. Regards, and have fun. K2WH Bill's QRZ Biography

I have had several people contact me recently about a missing page in the online SR-2000 Operation and Service manual. Page 32 is missing from a most of online manuals. Very important, shows important alignment information. For the record I have found only one source that provides a complete manual. jptronics.org halli.sr-2000.pdf Walt Cates, WD0GOF https://wd0gof.com/Hallicrafters A majority of acceptance is not proof of correctness. https://wd0gof.com/bible-study/commentaries/

I had a glitch on my website today. 10 people downloaded the SR-2000 repair manual and got the old version. If you your download does not have "ver 8.51" on the front cover, try again. The glitch has been fixed. Sorry for any inconvenience. Walt Cates, WD0GOF https://wd0gof.com/Hallicrafters A majority of acceptance is not proof of correctness. https://wd0gof.com/bible-study/commentaries/

All: I have read the very good explanation of the different revisions to the SX-117. Mine is a post-B model, which means that the notch filter doesn't affect the AGC response. I am inclined to revert that part of the build back to Rev B so the notch filter behaves "correctly", but before I look at this I'd like your opinions on the wisdom of doing this. What do you folks think? Thanks, Dave Maples

I just recieved a SX-117 thatI plan to restore and put in service. It's serial number doesn't seem to match up with Walt's run list. I'm assuming that the first 6 digits are the serial number and the last are a sequence number Or is it the other way around? Help! Thanks, 73 Jack KZ5A

I am approaching the last task in my S-85 refurbish project: Alignment. For those IF cans I cannot find the right tool mechanically match those cores' slot: it is too long and too large. I own these tools, none of them fitting: I see two alternatives: 1) buy one (can someone provide me directions on where to buy and exactly what?), or 2) build one (preferable - can someone provide me the slot size specs?). Thank you very much guys. Emanuele.

I now own an SX-42 I seem to be getting quite a collection here...... SX-9, S-19R, S-38C, 5R10, SX-100, SX-43 . Anyway, everything is working, BUT the FM is "funky". Aside from it being quite drifty, it also tunes station in strangely. I understand "capture effect" on FM, but it seems like there is very little tuning range between stations. I was using a little digital FM modulator today to place cd's and the radio was "all over the place". Any ideas? AM broadcast and shortwave are both fine :) Howard