Bulletin:   HR1130
Equipment:  Uniden  HR-2510
Subject:    Control RIT both transmit and receive


 make the tx and rx both responde to the rit control and reduce the amount
of frequency change for the control.
this one requires that you locate the rit control and remove the following:
r 802  a 1k resistor in series with the rit pot
the rx 8v line that goes to high side of pot, remove and put aside, you
will need it for power to nb switch and rf gain control.
now remove the subassembly b801 pb-120 and remove r802. cut pc land between
high side of vr802 and r 801 you will now solder the rx 8v line to the
freed side of r 801.
the 1k resistor, r 802 will be replaced with a 100k resistor, and a line
will be taken from the 8v side of ic 107 the 8v regulator to a resistor
network that will give aproximately 52k (you will need to experiment to
get a value such that you rit pot will give you readout frequency when
the feducial line is pointed at center)
lift one side of diode d150, this will free the pot vr111 from the line
that feeds the varactor on the pll board. you may use the pot in conjunction
with a 50k resistor (47k) to set the rit pot to center position, by putting
it in series with the 50k resistor and adjusting. this combinations will
give aproximately +-300hz either side of readout freq.
the best way to use the pot vr111 for this is to lift a jumper that runs
to the land on the high side of the pot and solder the 50k resistor to this
land. run a wire from the other side of the resistor to +8v (make sure it
is not tx or rx 8v since that is switched on or off depending on what state
radio is in tx or rx)