Uniden Grant need the schematic.

[dss56]

I have a Uniden Grant with the TA2222A audio chip.

There is no audio modulation and no pa audio.
Receive audio is fine and external speaker audio is fine.

The schematics I have found on the net are not the best when enlarged to read the parts is blurry.
So a good copy i need if possible.

I'm looking to replace cap C-186 C-153 C-18 C-95 and see what happens.

I wanted to check out schematic wise before I change them 1 at a time for the modulation not working

thanks

 

[nomadradio]

Way too many radios named "Grant" with that audio chip in them.

Is it the 1980s Grant radio with the PC-409 circuit board?

Or a Grant XL, Grant LT?

All of them use the TA7222P audio chip, but the circuit boards and schemos are different.

73

 

[dss56]

PC-409AC board

 

[nomadradio]

The one posted at CB Tricks is all I have for that radio.

73

 

[dss56]

thanks nomad same here when you blow it up it gets blurry and hard to read the components # thanks

Hope someone will chime in on a good copy

 

[kopcicle]

have a -409 but AC? dono...

 

[dss56]

thanks kopcicle i can read this if blown up great

 

[Christophe Barbe]

Hi, found this, but maybe you wil still find it blurry ; hope this helps though.
73 de Chris KP733
https://robeston.ddns.net/PMR-CB_RADIO_RAJZOK/CB. Grant PC409/Grant_PC409.png

 

[dss56]

Yes Chris still blurry thanks the one Kopcicle posted if blown up you can read so all make a copy of that one as the ones on cbtricks is the same blury when enlarged

 

[kaos513]

Think the 29 LTD older model will have same board? Could be wrong

 

[dss56]

29ltd is a total different radio am only