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814
Posted on Wednesday, November 07, 2001 - 11:12 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Can someone tell me how to perform the channel mod? I have the Uniden/President Grant with the push buttons in the middle and 6 knobs on the left.

Thanks in advance,
814
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Tech181
Posted on Wednesday, November 07, 2001 - 1:05 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

If you have the 8719 PLL...

(SWITCH 1)
Connect the "middle" pole of a SPST toggle from pin 12 on the PLL and the other to pin 11 on the PLL.

(SWITCH 2)
Using a second SPST toggle, connect the "middle" pole to pin 10 on the PLL and the other pole to board ground.

I say middle because there are only two poles but they are offset somewhat. The "middle" pole is the closest to the middle of the underside of the toggle switch. When you mount the switches, the pole closest to the end of the switch goes towards the bottom. This is important for reading the freq roadmap correctly.

This gets you 26.815 - 28.045

Steve
Tech181
Tech181@copperelectronics.com
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Tech181
Posted on Wednesday, November 07, 2001 - 1:18 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

If you have the MB8719 PLL...

Install a SPDT switch.

Connect the top pole of the SPDT switch to board ground.

Cut the board trace coming off of pin 11 on the PLL and seperate the trace.

Solder a 4.7K resistor across the seperation you just made.

Connect the middle pole on the SPDT switch to pin 11 on the PLL

Connect the bottom pole on the SPDT switch to pin 9 on the PLL.

Steve
Tech181
Tech181@copperelectronics.com
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San1662
New member
Username: San1662

Post Number: 1
Registered: 3-2005
Posted on Thursday, March 03, 2005 - 6:46 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Need Channel mod for the uniden grant LT
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Kid_vicious
Intermediate Member
Username: Kid_vicious

Post Number: 249
Registered: 9-2004
Posted on Thursday, March 03, 2005 - 9:51 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

san1662, look above your post. that is the mod.
matt

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