Galaxy DX 959...GNF?

[steved]

I just got a Galaxy DX 959, one of its features is a "GNF" or Galaxy Noise Filter which is supposed to reduce the "rushing noise."

I've been running it a little, and while it does help quiet things down, over half of the RX transmissions are distorted (like they are seriously over modulated). If I defeat the GNF, everything sounds normal. When engaged, the RX is distorted bad enough that you cannot understand over half the people talking.

Is this normal for the GNF?

 

[linearone]

its for use on ssb only

 

[GRTS]

its for use on ssb only

linearone is 100% correct.

I think the older manuals needed an updated to reflect that.
I'll get that done on the next printing.

 

[bigred222]

my Manual had that in there and i got my radio in 06. personally just being candid with you i think it sucks. Ive gotten used to the white noise. it doesnt bother me anymore.

 

[steved]

If it was in the manual, I must have missed it...what I read seemed to indicate it could be used on any of the three bands.

Thanks for the responses, that will make it a little less aggravating!

 

[njdan30]

Even on side band it makes people sound really distorted

 

[9C1Driver]

If it was in the manual, I must have missed it...what I read seemed to indicate it could be used on any of the three bands.

I think you mean modes of talking like AM, FM, and SSB. Bands are what channels or frequency’s are grouped into.

 

[nomadradio]

The GNF is the electronic equivalent to taking the cardboard tube from a roll of paper towels and covering your ear with one end of it. It's an audio band pass filter. The sound of the thing doesn't seem to appeal to anyone I have found yet.
73

 

[Enterprise312ok]

Now if we had something like a switchable channel guard crystal filter that would be a good use for that switch. The Gnf just sounds bad.

 

[c316buckeye]

GNF works well when mobile, while in very close range with another radio. it allows me to use am/ssb at a very close range (knowing the mic gain can be backed way down). if your neighbor had a base and you talked to them a lot. it wipes everything out but a very strong signal, including some horrible interference squealing found kon some lsb frequencies.

i came here looking to find out if GNF could be calmed down, a lot, by changing a resistor or some board component. maybe turned into a mild high cut for bacon white noise that the 3 stage tone can't sort out?

 

[njdan30]

GNF works well when mobile, while in very close range with another radio. it allows me to use am/ssb at a very close range (knowing the mic gain can be backed way down). if your neighbor had a base and you talked to them a lot. it wipes everything out but a very strong signal, including some horrible interference squealing found kon some lsb frequencies.

i came here looking to find out if GNF could be calmed down, a lot, by changing a resistor or some board component. maybe turned into a mild high cut for bacon white noise that the 3 stage tone can't sort out?

GNF works well when mobile, while in very close range with another radio. it allows me to use am/ssb at a very close range (knowing the mic gain can be backed way down). if your neighbor had a base and you talked to them a lot. it wipes everything out but a very strong signal, including some horrible interference squealing found kon some lsb frequencies.

i came here looking to find out if GNF could be calmed down, a lot, by changing a resistor or some board component. maybe turned into a mild high cut for bacon white noise that the 3 stage tone can't sort out?

I never use the gnf. It's supposed to be for ssb only not am at least that's what my manual said, hopefully someone will have the answer you're looking for. 73.

 

[nomadradio]

changing a resistor or some board component.

Probably more than one. Would be cool to figure out which fixed resistors to sub with potentiometers. Might be tuneable that way. To do it with fixed parts you'd have to work out the new component values.

Have fun with that. Not on my bucket list.

73

 

[c316buckeye]

Probably more than one. Would be cool to figure out which fixed resistors to sub with potentiometers. Might be tuneable that way. To do it with fixed parts you'd have to work out the new component values.

Have fun with that. Not on my bucket list.

73

after learning how it was way more than 1 component, i was thinking just delete the GNF wholesale and use the switch for a high cut to back up the tone. was going to ask the tech to put a high cut on the talkback pot, but that might be wishful thinking as well. he might take a shine to a challenge