Re: Icom Repeater Repair fun... (parts hunting) The VCO is working just fine thanks... I've got a bad pll chip and the voltage regulators are right on the money.
If I can't find the pll chip I might have to replace the receiver or construct an LO... yes probably a crystal type. Doesn't have to be frequency agile for repeater operation. s. > DCFluX <[EMAIL PROTECTED]> wrote: > > I have never seen PLL chips go bad in anything. They should only > do it if the voltage regulators are fried and they are over > volted. Check your VCO transistor and buffers. > > On 2/12/07, Glenn Little WB4UIV <[EMAIL PROTECTED]> wrote: > > Replace the noisy PLL LO with a quiet crystal LO. Easy surgery, better > > noise figure on receive and less phase noise on transmit. You probably have > > no need to have an agile receiver. > > > > 73 > > Glenn > > WB4UIV > > ARRL Technical Specialist > > > > > > At 01:26 AM 02/12/07, you wrote: > > >Well... > > > > > >I've got an Icom IC-RP2210 (220MHz) Repeater here with a dead > > >receiver. The PLL is crap and it's not the first time I've heard > > >about this problem. Even more no-fun is the NEC PLL and Prescaler > > >chips are no longer available. > > > > > >Anyone ever find a replacement parts source for the pll uPD2834c > > >and pre-scaler uPB571c chips? > > > > > >and/or... > > >Anyone got a dead Icom Repeater Receiver they want to sell as a > > >parts unit? > > > > > >What is everyone else doing with these repeaters if we can't get > > >the parts to fix them? > > > > > >What are the next six lotto numbers for the CA. Lottery? (never mind > > >this one). > > > > > >your turn, > > >skipp > > > > > > > > > > > > > > > > > > > > >Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > >
