Radioshack 15-301 remote

SOURCE: RadioShack Universal Remote (Cat. 15-2147) - to use with JVC TV

programming a device: make sure batteries are installed correctly. Turn device on(for ex., your TV). Press TV button next to Power button on your 15-2147...Press and hold the little P button until the red LED lite blinks twice...enter the first four-digit code for your device(in your case,JVC TV...first set of #s is '0463' ) note: the LED will blink once as each number is entered. If the number is correct the LED will blink 2x. Note if the LED doesn't blink twice after entering the 4 digit code, begin again with the next set of numbers. For JVC the codes are 0463 and 0053. Once your remote blinks twice after entering in your TV code, press the power button. This should turn off your TV. Just use like any other remote. Hope this helps you.

SOURCE: radioshack 3-in-one remote code

the panasonic codefor my radioshack 3-in-one remote is 0250

SOURCE: need code for hitachi tv

Hitachi: 1145, 0145, 0151, 1904, 0032, 0409,

or you can use the general method:
SEARCHING FOR YOUR CODE
If your device does not respond to the remote after
trying all codes listed for your brand, or if your
brand is not listed, try searching for your code. For
example, to search for a code for your TV:
1. Press TV once.
2. Press and hold P until the red LED blinks
twice, then release.
3. Enter 9 9 1. The LED blinks twice.
4. Aim the remote at the TV and press Power.
The remote sends IR codes from its library to
the selected device, starting with the most
popular code first.
5. If the TV responds, go to step 6. If the TV
does not respond, press CH+. The remote will
try the next code. Continue until the TV
responds.
NOTE: Press CH- to try the previous code.
6. To lock in the code, press P once. The LED
blinks twice.
7. To search for other device codes, repeat steps
1 to 6, substituting the appropriate device
key.

SOURCE: I have a Radioshack 3 in 1 remote 15-2147.

the codes are 1447, 0047, 0060, 1922, 1958, 0679, 1247, 1547, 1919, 0018, 1953, 0090, 1147, 1917,1948, 1047, 1347, 1907

SOURCE: UNIVERSAL REMOTE

I've found the user guide, however, it is in .zip format. You will need to download then unzip (extract) the file. Other then that, this is the manual for your 15-2147 3 in 1 remote, complete with codes. Hope this helps.