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uniden pro 640e mods
Posted: Friday 12th Sep 2008, 21:38
by santafe308
Are there any mods for this radio
the pll 2824 is unmodifiable please read but
Posted: Thursday 23rd Oct 2008, 9:23
by hamguy2
hi there, its a 2824 chip or pll the only way you can mod this is changing plls or by using a expander board with crystals ,you can unlock the clarifier also but you need a swing kit, thanks hamguy2 nsw australia
Posted: Saturday 1st Nov 2008, 0:55
by johhn
The First Question is Do you have a display problum ?
I could not find a UPD 2816 for the channel convert.
I had 2- 640-e radios and dameged both tring too do the display thing.
O.k. VR-5 is Modulation,VR-10 is A.M.,VR-11 is S.S.B.,
Streach the coils Or Spread of L=26,L-34,L-35,L-36While reading,
On a meter First,Then adjust the VR- Pots ,Turn mic up all the way,
on the Knob ,then turn the Vr-5 too Max ,Then turn down the mic on the knob. Look up Defpom mods a Uniden pc 122 . Johhn 361 East Tex.
Do Not remove any TR-24or 26 Transisters...
Expanion
Posted: Sunday 9th Nov 2008, 3:57
by johhn
You add a crystel switch too that radio it won't go out of band man.
The 2824 is a locked pll, any grounding will fry it.
But you can unlock the clarifier. Varactor diode. See dk mods..