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Another technique for reducing or eliminating noise was to introduce local noise to the front end of a receiver from a local "noise antenna." The amplitude and phase of that noise could be adjusted

There are some, who put entire chassis in the dishwasher as long as components like transformers and/or coils are removed. From our file department. *K2WH Bill's QRZ Biography (

Can't read the whole book:-) Look at any of the classical receivers, say a Hallicrafters S-40. That has a series diode noise limiter. I think the S-20R has a shunt limiter. Series limiters began to

Back to noise? stuff only Richard you say halli used a ?Noise ?LIMMITER ?, not a blanker? but it is an “unusual noise limiter arrangement” Is there a standard arrangement? And what is it?

I didn't believe it, till I used it, but for cleaning radios... chassis and all - "Scrubbing Bubbles"? works swell. TriFlo teflon lube is good for breaking loose Pot and Variable Cap shafts... a

Well, that's useful to know. Actually, I have some Kroil, my local hardware store just began to stock it along with gun cleaning stuff. I agree that recommendations for cleaning based on

Anyone have an SX series S meter they wish to part with? SX99 I am working with needs one replaced. Plastic face is broken and cracked badly. thanks keith

RichardI am recommending penetrating oil to clean and lube switches and pots.? Kroil, Deoxit and the like are effective but are also expensive.? Just trying to point out that there are alternatives

The noise limiter in the SX117 is somewhat unusual. It is a diode noise clipper, similar to the conventional limiters found in many receivers, but works at IF frequency rather than audio. It is NOT

FloydYou originally said: "Haven't dug into this yet, but wonder what other SX-117 users see when turning on the Noise Limiter in? USB or LSB mode.? On my receiver, it's like disconnecting the

A noise limiter (usually a diode or two) clips off audio above the strength that the desired audio wave reaches. Some observers say it should be called a clipper, not a limiter. Often the

A blanker normally reduces pulse type peaks such as spark plug type pulses. Someone else will need to describe a noise limiter. Bob W4JFA [email protected]> wrote:

So, guys, where is the formal non-partisan definition of.. "noise blanker" "noise limiter" Is there a defined difference between them ? and do the terms define an intent or a specific circuit?

I had hoped that someone who has actually seen and used an SX-117 would respond.? I've only been restoring receivers for 40 years or so, but over that time I've learned that you can save a lot of

Wow. Awesome. I tried that on mine but the plates where badly scorched. Also, If you are not aware, You should run a wire from the rear section TOP terminal to the rear section bottom terminal.

I got lucky. Simple fix. When I got the load cap out, I could clearly see the rotor was too far to the rear. I adjusted the end play screw and centered the rotor plates and all is fine. That is when I

Contact me offline to arrange payment and shipping djeffarndt@... THX Yes I have those items Kevin [email protected]> wrote:

As far as I can see, there is a form of Noise Blanker implemented into the SX-117. Two silicon diodes, polarised by the signal from the last IF amp that de-sensitizes the input directly at the

FloydHave the tubes been checked for conduction, leakage and shorts?? Are you planning to recap the radio or at least check some coupling and bypass caps for leakage?? Have you done a critical look

Clarify a little, do you mean a desired signal falls off that much or background noise? If its a desired signal it sounds like the blanker is blanking or blocking the signal all the time. A noise