Whatever is done, they did. Whatever it’s for, I don’t know. But supposedly they did a “receiver mod” or whatever.
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Galaxy DX-94HP from Bells... Backwards Swing
- Thread starter AndrewGS
- Start date
not so great he is a good salesman. i would not let him touch my radios
Not asking in an argumentative way, just genuinely curious, why do you feel that way? Have there been some unhappy customers? Serious question.
Greetings!
I saw your letter, interesting - 9 amp and 75 watts?
I realized I needed to clarify - Volts times amps and you get 75 watts RF? - what I meant by "low" is that the power consumption for the amp seems low for the power output seems "high" like harmonics are involved...
Sounds like a harmonic is playing on stage when you key up - er harmonica...I mean...
You need to see the first pic, the NPC mod has been applied ABOVE the board...and it a Diode and Resistor mod I've talked about ABOVE the board over by the rear speaker jacks and the AM regulator so there are some issues.
Again, go back to your first photo - and slide over to the rear panel and look for the Electrolytic cap folded over 1000uF 25V - it and the wire loom cover the work.
This was the very thing I was taking to others about in the thread about the Asymmetrical Mods. I use a 180 ohm resistor and the diode stays in same orientation - only the resistor is added to the banded upright end in series.
But that with the NPC Mod to AM Regulator...
The other variant deals with a Diode BLOCK mod, where the AM regulators' 560 ohm resistor designed to regulate the AM carrier - is reverse biased by a diode.
Both of these mods will affect the modulation similar to what you're experiencing now with overmodulation in low power...
The Mod shown top photo above? As shown in photo? And D103 in circuit schematic above? With this mod, wherever it is; affects the power available to REGULATE AM envelope. which is controlled by VR17.
Continue at your own peril - but at least now I've updated this to help you figure out why it's doing what it's doing...
Both of them contain mods - so use at your own risk.
Regards!
:+> Andy <+:
Addendum...:
See graphic below...
I published the above graphic on CB Tricks because of all the "Garage sale" radios I'd come across - lots of them REMOVED the 560 ohm resistor and placed the 100 ohm and diode IN PLACE OF IT - so the NPC RC effect was lost and the AM regulator sounded like crap...
So I'm posting above again, so the rest of us can at least try variants of the above designs - not just as a "marker" but as for education as well.
Each one of the above designes works to varying levels of success, doesn't mean each one is an exact fit, but I can tell you that they do help immensely when it comes to driving amps and since each install varies widely - the options are various as well.
Don't make this harder than it needs to be...
I saw your letter, interesting - 9 amp and 75 watts?
I realized I needed to clarify - Volts times amps and you get 75 watts RF? - what I meant by "low" is that the power consumption for the amp seems low for the power output seems "high" like harmonics are involved...
Sounds like a harmonic is playing on stage when you key up - er harmonica...I mean...
You need to see the first pic, the NPC mod has been applied ABOVE the board...and it a Diode and Resistor mod I've talked about ABOVE the board over by the rear speaker jacks and the AM regulator so there are some issues.
Again, go back to your first photo - and slide over to the rear panel and look for the Electrolytic cap folded over 1000uF 25V - it and the wire loom cover the work.
This was the very thing I was taking to others about in the thread about the Asymmetrical Mods. I use a 180 ohm resistor and the diode stays in same orientation - only the resistor is added to the banded upright end in series.
But that with the NPC Mod to AM Regulator...
The other variant deals with a Diode BLOCK mod, where the AM regulators' 560 ohm resistor designed to regulate the AM carrier - is reverse biased by a diode.
Both of these mods will affect the modulation similar to what you're experiencing now with overmodulation in low power...
The Mod shown top photo above? As shown in photo? And D103 in circuit schematic above? With this mod, wherever it is; affects the power available to REGULATE AM envelope. which is controlled by VR17.
Continue at your own peril - but at least now I've updated this to help you figure out why it's doing what it's doing...
Both of them contain mods - so use at your own risk.
Regards!
:+> Andy <+:
Addendum...:
See graphic below...
I published the above graphic on CB Tricks because of all the "Garage sale" radios I'd come across - lots of them REMOVED the 560 ohm resistor and placed the 100 ohm and diode IN PLACE OF IT - so the NPC RC effect was lost and the AM regulator sounded like crap...
So I'm posting above again, so the rest of us can at least try variants of the above designs - not just as a "marker" but as for education as well.
Each one of the above designes works to varying levels of success, doesn't mean each one is an exact fit, but I can tell you that they do help immensely when it comes to driving amps and since each install varies widely - the options are various as well.
Don't make this harder than it needs to be...
Last edited:
From what you described I would say yes. You need to back the power and modulation down a bit!
Everything that has been said on her can be true. The problem though is that few times do the words Galaxy and Proper Alignment belong in the same sentence! Once you start doing suppressed carrier, NPC, Super Swing mods all bets are off.
Well, she’s on her way to OldTech03 to be looked over and aligned. Now I’m excited all over again to see what he finds and how he can improve it. 
Most of his customers are very happy with the work they had done. This guy seemed happy with his also.
I can vouch for 8541 Electronics also. I didn't realize they were still in business though. Nice to know they are still around.
i have no contacted him in a while. im assuming he is still in business.
You don't often have the pleasure of meeting the people that you do work for any more as most everything is through the mail and usually hundreds if not thousands of miles apart but, I had the pleasure of meeting Andrew as he came to visit me here in Colorado all the way from Texas to let me know he was as happy as a speckled pup under a red wagon with the work I did for him on his Galaxy. I wanted to publically thank Andrew for that it was really was a great meeting. So Thanks Andrew hope you got safely back to Texas.
Denny, it was great to meet you. We ended up driving through Garden of the Gods after we left there. It was a great day for a ride. I'm back home now and still haven't had the chance to install the Galaxy in the truck, but I'm gonna get on it soon.
When I get it all installed I'll get my little story on video and post it up for all to see. I do not recommend Bells AT ALL.
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