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Hello Don and others, I have a S-38E Mark 2 and it has the rear mounted potentiometer. I also just received the Haystack capacitor kit and will install these.? Ill FIRST change out the AC wiring to

My experience with Hallicrafters is to keep things wired "as is" when working on Hallicrafters if the receiver was never tampered or worked on in later years. I'd keep the resistor values the same

Ed and all, I’m a bit unsure about who said what to who, and maybe I added some confusion. So to go back, the original post said [in part] “So, why would it have an attenuated sig on 0.5 kc

“the adjustment” means a pot or?? , I might look later at BAMA. Sent: Saturday, October 26, 2024 10:54 PM To: [email protected] Subject: Re: [HallicraftersRadios] Wanted:

"Don Root" <drootofallevil@...> wrote So why would it [notch filter] have an effect on 0.5Kc only? <snip> Hi, Don The other SX-115 IF selectivity positions are not symmetrical with

Would help to know the version. However, it appears that the first E does not have the adjustment on the back panel. not sure what the difference between the Mark 1 and Mark 2 are but both are in

So Glen first needs to find out which version he has? https://bama.edebris.com/manuals/hallicra/s38emk2sch/ on bama is clear , another manual isn’t Sent: Saturday, October 26, 2024 8:47

Richard ,now I see there is quite a bit of overlap in the BAMA splitting of schematic, so my wafer count was probably wrong. I tried to patch the selectivity area together [see ATTACHED ]. I am now

A note: looking at the various handbooks for the E version I find a major difference in the first E and the Mark1 and 2 versions, namely the arrangement of the BFO. In the first one an arrangement

Don, I think you are on the right track. I have trouble following the schematic from BAMA. I suggest printing out the part with the selectivity filter and tracing out the 0.5Khz section with a

RE “So, why would it have an attenuated sig on 0.5 kc only?” I don’t know the receiver, but it looks like the selectivity switch has 6 wafers which set the circuit values for each position.

Glad to help Glen. My daughter in law and granddaughter were there also. Best 73, Gary H. Harmon Jr 6003 Archwood San Antonio, TX 78239-1504 (210) 657-1549 home (210) 884-6926 cell

Hi Gary, I also just added a DJVU reader so that I could use these BAMA files, all went OK. We just left San Antonio this morning after a super evening at the ALAMODOME seeing Billy Joel and

Justin, Thank you. -- Glen Jenkins, WB4KTF, S-38E

<snip> So, why would it have an attenuated sig on 0.5 kc only? Any suggestions? Thanks and 73 Hi, Steve Did you try shifting the notch filter? In the SX-115, the "off" position of the notch

Not uncommon for the narrowest filters to have higher attenuation especially from that era but 60 db down does sound excessive. Possibly an alignment issue but I am not familiar with the SX-115

This looks like one from BAMA. The S-38C one is pretty good, at least readable but the Mark 2 and 3 book is pretty blurry. I looked through the stuff I have archived but could not find a really

https://bama.edebris.com/manuals/hallicra/ Gary H. Harmon Jr 6003 Archwood San Antonio, TX 78239-1504 (210) 657-1549 home (210) 884-6926 cell <mailto:gharmon@...>

Glen - This one isn't too bad... 73, Justin B. - KI5GKD

What if the filter is ok but the 50 kHz IF isn't lined up right on 50 kHz so that the narrow filter doesn't coincide with the passband even if it is still functioning correctly and on frequency? Just