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Possible Galaxy 94HP problem

Jim1428

Active Member
Feb 13, 2017
90
101
43
72
One of the local guys just acquired a new Galaxy 94HP, I have noticed when he operates on CB ch22 AM he also generates a signal on 28.200. I am using a Yaesu FTDX3000 with a panadapter to monitor the band, I am using a Penetrator 500 antenna.

I can kick in 18db attenuation on the radio and still hear him clearly. With no attenuation I get an s6-s7 signal, with attenuation the signal is s2-s3. I live about 1/2 mile from him so I don't know if he is overloading the 3000 or if he has a problem.

I have talked to a couple of other hams farther away and they are going to check his signal the next time he is on the air.

I was wondering if anyone has had any problems like this with this radio.
 

Handy Andy

Do Your Research First, Then Decide...
Apr 23, 2018
5,583
7,693
573
www.cbtricks.com
Hmm...

22 CB is 27.225 so...

28.200 - 27.225
=
0.975MHz

So that means it is something in either the mixer stage (byproduct) or he's having a really hard time trying to keep his channels on the same frequency - this may be a divisor error (How?) the PLL attempts to jump when the voltage is not steady in the Galaxy radio - the PLL chip resets itself at times by jumping - this jumping is a divisor result in the channel selector - so if the PLL thinks it's "falling" or unable to regulate - this occurs as an instantaneous moment of correction - this usually happens on poor regulation of the 8 volts the PLL needs - so if Audio is pulling that resource down - so does the PLL's own regulation and the PLL can't keep up - it tries to re-establish lock.
 
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Shadetree Mechanic

808 On The North Side of Dover
Oct 23, 2017
4,935
7,910
623
50
The First State (Delaware)
Yes, a " band pass filter " would chop them out, but there is still something not right with the radio.
Also it's going to attenuate anything outside of the regular 40 channels.

73
Jeff
I assumed that most 10 meter radios would do this to 28.200 if they were splattering. The most common problem we hear about is 54 MHz, so I figured 28.200 was one of the harmonics generated. If the pll is causing it, then this is a new one for me. That makes an interesting problem for sure, I still manage to learn something new every day.
 

Jim1428

Active Member
Feb 13, 2017
90
101
43
72
Thanks for the suggestions and information everyone. I am going to suggest
he contact the place he purchased the radio from and see if they will repair it,
if not then the filter is next in line.
 

johnnytek

New Member
Sep 5, 2021
25
8
3
82
One of the local guys just acquired a new Galaxy 94HP, I have noticed when he operates on CB ch22 AM he also generates a signal on 28.200. I am using a Yaesu FTDX3000 with a panadapter to monitor the band, I am using a Penetrator 500 antenna.

I can kick in 18db attenuation on the radio and still hear him clearly. With no attenuation I get an s6-s7 signal, with attenuation the signal is s2-s3. I live about 1/2 mile from him so I don't know if he is overloading the 3000 or if he has a problem.

I have talked to a couple of other hams farther away and they are going to check his signal the next time he is on the air.

I was wondering if anyone has had any problems like this with this radio.
whoever tuned the radio clipped the alc and moved the 54 mhz trap coil.. reverse that.
 
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9C1Driver

Sr. Member
Aug 13, 2008
3,655
1,563
173
Thanks for the suggestions and information everyone. I am going to suggest
he contact the place he purchased the radio from and see if they will repair it,
if not then the filter is next in line.
If the shop is a clip and snip max the audio out kinda "tune" shop it will be pointless. They will put it on the bench, turn the talk back up and start saying audio hello into the mic. Then they will say look at that watt meter and do you hear that? It's working, doing 140 watts.

The solution is have a tech that does correct quality work look at it. This means checking the radio on a scope for a clean signal. Probably have to restore what ever limiter has been clipped and then adjust the power output to a factory stock level or even a bit conservative. At 60-80 honest watts it probably would not act up.
 
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Jim1428

Active Member
Feb 13, 2017
90
101
43
72
If the shop is a clip and snip max the audio out kinda "tune" shop it will be pointless. They will put it on the bench, turn the talk back up and start saying audio hello into the mic. Then they will say look at that watt meter and do you hear that? It's working, doing 140 watts.

The solution is have a tech that does correct quality work look at it. This means checking the radio on a scope for a clean signal. Probably have to restore what ever limiter has been clipped and then adjust the power output to a factory stock level or even a bit conservative. At 60-80 honest watts it probably would not act up.
He purchased it on line, we do not have any local shops that work on
cb radios, when I talk to him I will check if he had it peaked and tuned.
 

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    My first thought was why hasn't someone paid him a visit. I mean, his address is posted above.
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    Good news! I opened an appeal case after eBay sided with superhawkwss6. I also opened an IC3 case & sent that information to eBay. Within an hour they responded, reversed their decision and returned all of my money. Unfortunately, superhawkwss6 stole my CB radio and eBay will likely not suspend or close his account, but rather allow him to continue his criminal activity. I think I'll still file a report with our sheriff's dept (the sheriff is a friend of mine) though I know this type of crime isn't worth their time. This guy needs to be stopped and I'm certainly going to do my best to make that happen.
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