Noise Blankers that actually Work?

[W4KVW]

The ICOM 7000 has a great NB & other noise reduction filters. Best by far I have ever used in a mobile radio. Yaesu 857D was by far the Worst ever. It is a Pathetic Excuse for a radio so I would expect no less. I have owned many CB Radios that were far better radios than it was on it's best day.

SIX-SHOOTER

 

[Shadetree Mechanic]

I have a Stryker 955 Radio and the NB works incredible well, the audio feeding a Sonic Cushion (a GE 47 light bulb and a pot type volume control 25 Ohms, that levels out the strong/weak station volume level) that feeds the Clear Speech DSP speaker unit, all mounted on my dash. It all works quit well allowing me to drive down the road and NOT hear ignition noise. Had to install two diodes across 955 audio output wires back to back, to prevent the snap pulse into the Clear Speech unit that has a 10 watt audio amp, when pressing the PTT switch.

The Sonic cushion sounds interesting, do you have a diagram?

 

[drgrant]

Just to add my .02....

Icom 7300 and 7600 have great NB/NR function in them, a quantum leap over stuff like the 706. I bet the 7100 is also decent (given its adjustment range) but haven't gotten
one of those pups yet.

The 775 DSP and 781 had decent NB, for their time, but it's not nearly as good as the
other two rigs I just mentioned. It's still way better than the 706, 725/28, etc, though.

Another thing I always do which helps... shut off the front end (ATT, IPO, AIP, etc) or kill off the gain on RX when you don't need it. Kills off a lot of unnecessary noise when you don't really need to pull in the weakest signals. Most HF rigs have a pretty hot RX, and for SSB/AM use, the "rx full open" gain is overkill 9 out of 10 times.

-Mike

 

[Conrad Nerdahl]

The NB on my IC-7000 does a fantastic job in my mobile.

Works as good as the NB on the old FT101E.

Mike

Kinda wondering about the NB on an FT101; because, I had the original NB on the FT101 and then upgraded to the newer NB on the FT101 (as per the FoxTango group); and, never had effective NB. And now on the FT2000; again the NB is almost useless; while instead, I defer more often to the DNR; which, as has been suggested, introduces certain levels of distortion and deceasing audio bandwidth. I will admit that the NB on the FT101; worked much better than the current NB on the FT2000. Just wondering if there's any modification available to enhance its capability. K5KUE

 

[Groundhog KSS-2012]

The NB and ANL on my President Lincoln works very well. Real pleased with it.

 

[nfsus]

The nr-1 is the best thing I’ve seen. It filters the noise before it gets to the radio. Go on YouTube and google nr-2 noise blanker. S3vora builds them. Pure fire

 

[BC Coyote]

MFJ-1026. Pain in the butt to operate, but once it's set up correctly it puts every other noise blanker and noise limiter to shame. It will take S9+ of powerline noise down to less than S1. I had to use one during the several years it took me to get the power company out here to fix their noisy lines.
My noise level is nearly 0 now, but I keep the 1026 in line just in case I ever need it again......

 

[nfsus]

MFJ-1026. Pain in the butt to operate, but once it's set up correctly it puts every other noise blanker and noise limiter to shame. It will take S9+ of powerline noise down to less than S1. I had to use one during the several years it took me to get the power company out here to fix their noisy lines.
My noise level is nearly 0 now, but I keep the 1026 in line just in case I ever need it again......

I tried one. It does good for certain consistent noise from a single source. It’s not a noise blanker though. But has its uses

 

[secret squirrel]

I actually prefer Evan Williams and Coca Cola, rather than Jack Daniels and Coke. Jack and Coke is the standard to noise blanker for then day. Evan William seems to taste good mixed and the price is a little better. I am an Old Crow fan too. Old Crow blanks the noise.

 

[Captain Kilowatt]

I actually prefer Evan Williams and Coca Cola, rather than Jack Daniels and Coke. Jack and Coke is the standard to noise blanker for then day. Evan William seems to taste good mixed and the price is a little better. I am an Old Crow fan too. Old Crow blanks the noise.

I don't think the noise he was referring to was from his wife.

 

[Crawdad]

Jameson on the rocks will make any Export** sound like an Icom 7610.

**Export must be powered down for best results

 

[Studebaker Hawk]

There is a big difference between a noise blanker and automatic noise limiter.

An automatic noise limiter is usually just some capacitors to reduce high frequency noise in the audio and causes little to no distortion and can be kept on.

A noise blanker is an active electronic circuit that automatically activates when certain types of electrical noise is detected.

Because it is an active circuit, it can and does cause some distortion, making being able to switch it off a desirable feature.

The cheapest radios often don't have a noise blanker at all.

Those that do, almost always have a switch turn it off.

Most all radios have an automatic noise limiter, so are switchable, but many are not.

A noise blanker is for electrical interference and cuts the receiver off and on.

An automatic noise limiter reduces the high frequency response of the audio, to cut atmospheric static noise and does not cut the receiver off and on, but does little to nothing for electrical interference.