Copper Talk » Modifications » Radios » 95T RF GAIN mod...... « Previous Next »

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Allan
New member
Username: Allan

Post Number: 6
Registered: 2-2006
Posted on Sunday, February 19, 2006 - 7:21 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Break...
OK Pat & BC, go ahead and get it outta your system, soz I can read this thread without all the commercials...lol
Now:
I've scanned the forum pretty much and found some internal mods for this, but,......
I don't really care for the 40db PAD ( I never figured out what that acronym stood for!) switch to cut the receive on the 95T. It is either too much, or not enough. I have always used the RF Gain knob to control the white noise level and heterodyne on my rigs, as "squelch'n it" usually cuts "in and out" when talking mobile to mobile. Anyone figured out a way to turn the squelch pot into a RF gain variable circuit, or would the value of this pot be too low/high (off the charts) to accomplish this? Sure would be nice if it could be done.... Thanks for any input...

We're clear..
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Bc910
Advanced Member
Username: Bc910

Post Number: 695
Registered: 7-2004


Posted on Sunday, February 19, 2006 - 8:56 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

OK
Even tough the receive on the 95T is NOT as good as an S9, so far from what I have seen of it they have definitely improved on a heck of a lot of other stuff! In my opinion, Galaxy did right with it, just not as good as they could have. Now with that aside, I must say that my other gripes with the radio are a lack of control EG lack of external echo controls and lack of RF gain, etc....
I'm sorry I haven’t seen anything you’re looking for; I think the radio is too new still, sorry.
Just had to defend my position a little
BC
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Patzerozero
Senior Member
Username: Patzerozero

Post Number: 2459
Registered: 7-2004


Posted on Sunday, February 19, 2006 - 9:09 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

don't try to make friends with me allan

RF Gain Mod: Locate R72 just behind L5 (first receive coil, the one without a metal can on it), and run a wire from the right end of it through a 1k-5k pot to ground. Its that simple. For the RF gain to work, the radio's 40-db pad must be engaged. If you use a 5k pot, I recommend running the POT in parallel with a 2.5k resistor to keep the gain from dropping too fast with a small pot movement. If you have a 2k or 2.5k pot, that works even better.

i assume you don't wanna drill holes, but use the squelch pot for this mod. the squelch pot is probably 50k, so you may wanna experiment with resistors, starting with 25k & going smaller til you get the response you want.

just because you own a galaxy doesn't mean i won't help ya, , but a magnum would be better
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Allan
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Username: Allan

Post Number: 7
Registered: 2-2006
Posted on Sunday, February 19, 2006 - 9:34 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

For me echo is something like tuning a carb. Set it and close the hood. It would have been nice, tho, if they would have put the mic plug on the side, 'cause it sure would have opened up the panel for more necessities. I figured it wouldn't take you long to find this post, BC. Do you have a red light and bells go off whenever the word "Galaxy" is posted?! I'm sure Pat00 will be along soon enough. I still 'preciate the input...
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Allan
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Username: Allan

Post Number: 8
Registered: 2-2006
Posted on Sunday, February 19, 2006 - 9:36 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

There you are! What kept you? lol Thanks for the input, Pat00. Lemme give that a shot.
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Allan
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Username: Allan

Post Number: 9
Registered: 2-2006
Posted on Sunday, February 19, 2006 - 9:38 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Told ya I'm a Ford guy.......
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Bc910
Advanced Member
Username: Bc910

Post Number: 697
Registered: 7-2004


Posted on Sunday, February 19, 2006 - 9:49 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Actually Allan, I have a red phone like on the old batman show, it only rings when someone mentions Galaxy, Pat and I both have one and occasionally we use it to call each other.

BC
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Patzerozero
Senior Member
Username: Patzerozero

Post Number: 2462
Registered: 7-2004


Posted on Sunday, February 19, 2006 - 10:18 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

i think fatherhood has made bc go soft

even though i currently DRIVE a dodge, allan my other cars are all CHEVY, 2002 competition yellow monte carlo, 84 blazer on 1 ton axles & 44's, 75 pickup bodied blazer with lt1, 488's & 44's, 76 blazer & whatever tomorrow brings

'remember, this don't mean i like you', yul brynner/malik yoba cool runnings
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Allan
Junior Member
Username: Allan

Post Number: 10
Registered: 2-2006
Posted on Sunday, February 19, 2006 - 10:48 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

To the BAT SHACK, Pat!
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Dale
Intermediate Member
Username: Dale

Post Number: 328
Registered: 12-2002
Posted on Monday, February 20, 2006 - 7:24 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

there are pots inside radio too adjust sensivity
of recieve if ya can find info on these pots
i think it will help ya.some cb shops when they
do a tune up they jack them up so high its unbelieveable
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Allan
Junior Member
Username: Allan

Post Number: 14
Registered: 2-2006
Posted on Monday, February 20, 2006 - 7:55 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Dale. This is true, but:

This one is un-blemished, so far. It's just the local/distant switch is too extreme. If I have a 1# noise level, the hash gets annoying, flip the switch to the 40db cut, then I can't hear a 2# signal. Remember, I hate the Sq. knob for mobile apps., hence the reason for the mod. Base to base they are acceptable, 'cause they don't move much. I think all the mobiles should come with RF Gain. (HELLO, RCI!!!) I know, BC and Pat, uh, C-5, no wait. D-6. No. Oh, yea...S9. Just can't do the Chevy thing in my driveway. Sorry, dudes....
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Patzerozero
Senior Member
Username: Patzerozero

Post Number: 2472
Registered: 7-2004


Posted on Monday, February 20, 2006 - 8:32 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

allan, allan, allan...real radios have rf gains ...but they also DON'T have echo, talkback & roger beeps.

hey, i never said my S9 was perfect, but at least on the S9, they're adjustable

so, did you do the mod yet? you know, the 1 galaxy should've included in the 1st place
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Allan
Junior Member
Username: Allan

Post Number: 16
Registered: 2-2006
Posted on Monday, February 20, 2006 - 11:43 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Pat.
Nah. I will prolly have to wait till the weekend to try it. I'll need to rifle the some old radio carcass's and the drawers for donor organs. Then find the VOM,(and I'm sure it'll need a battery),then clean off the proverbial 1'x 1' work space on the bench. Doubt if I can find my solder. Guess I need to start a list and just go shopping. I am sure my oldest (of three) has half my stuff @ his domicile. He likes to mess with (guitar) effect petals. Too many irons in the fire 'round here to get anything done, seems lately. Probably be cheaper to send it out in the long run. Thanks, but I'll pass on the invitation.......
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Allan
Junior Member
Username: Allan

Post Number: 17
Registered: 2-2006
Posted on Tuesday, February 21, 2006 - 9:17 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

allan, allan, allan...real radios have rf gains ...but they also DON'T have echo, talkback & roger beeps.
You were saying?

S-9 AM/FM/SSB 10 Meter Radio


FEATURES:

40+ Watt, AM/FM/SSB/PA 10 Meter Mobile Amateur Transceiver

Six Digit Frequency Counter SSB Five Digit AM/FM

Frequency Counter OFF Switch

Roger Beep

Double Barrel 4-Pin Microphone Jacks

Variable Power Output Control

TURBO? Digital Echo with Dual Controls
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Patzerozero
Senior Member
Username: Patzerozero

Post Number: 2480
Registered: 7-2004


Posted on Saturday, February 25, 2006 - 1:41 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

you took my post out of context, allan! you know, how the sportswriters' take the superstars words & mold it into what will start a fuss, not exactly what was said you MUST go back & re-read my middle sentence. you also forgot the part about 'AMT'
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Allan
Junior Member
Username: Allan

Post Number: 19
Registered: 2-2006
Posted on Sunday, February 26, 2006 - 12:27 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Pat00 sez......

but at least on the S9, they're adjustable

So, how many times do you gotta keep fiddle'n with 'em?

Tinkeritis has been known to be fatal.
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Patzerozero
Senior Member
Username: Patzerozero

Post Number: 2486
Registered: 7-2004


Posted on Sunday, February 26, 2006 - 11:08 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

my S9 has been opened exactly 3 times. once to mod it...at which point i was NOT impressed(with output), i have to admit! the 2nd time, a few months later after a friend acquired 2 of 'em & screwdrived the heck out of one, to check out some part #'s. the 3rd time, to readjust some 'factory' modulation & power settings, including upping the bias a hair, so i could FINALLY attain variable AM carrier wattage of 1-12(rather then the disappointing 3-7 out of the box), & RMS swing approaching 18(rather then the disappointing 9 out of the box) & PEP swing of 40, AM & SSB(rather then the disappointing 15 out of the box).

i have had the pleasure of 'touching' a dozen more S9's, most of them NIB to find they were much closer to spec then mine was, though fortunately it was only minor tuning & not a major rebuild. included were 2 that were 'tweaked' to beyond useable capabilities. fortunately, they too, retuned perfectly.

if you search my earliest posts here, you will see some of my 1st stated that 'real' radios should NOT have beeps, echoes & talkbacks in 'em. i only had to fiddle with my S9's once-to shut 'em off! the AMT is ALWAYS OFF, as is the beep. even my kids grew sick of playing with the endless echo...eventually . came about from trying to listen to the dummies with so much echo they were 2 sentences in while the 1st word was still echoing.

in all honesty, galaxy should've put the mic connector on the side & put the echo & rf gain controls on the front...where real CB radios have 'em
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Allan
Junior Member
Username: Allan

Post Number: 23
Registered: 2-2006
Posted on Monday, February 27, 2006 - 9:15 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I agree!
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Allan
Junior Member
Username: Allan

Post Number: 24
Registered: 2-2006
Posted on Monday, February 27, 2006 - 9:43 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

You nailed it, P-00. Radios are for communicating. Period! I HATE the noise toys, too much echo, (what'd you say?) and roger (good buddy) beep. EEK! Just shows me they are very new to 2-way communicators, and I think they are trying to prove to the listening public that they have finally ditched the Cobra 29, by playing all that crud. I've been around radio's for 35 years, and learned to tune, expand, and to set up my own rigs with a good swr/watt/mod. meter. Just never got totally involved enough to gut and experiment with them. (Sorry!) Bells and whistles are what sell to the 'new breeds', that's for sure. Hopefully, the radio gods are listening to the people who are trying to set it straight......

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