> I recently purchased a Mastr II VHF station and it has a PLL > Tx exciter. > > Is it feasible to change that out with a normal P.M. "Xtal" > type exciter.
Yes, it's straightforward, just swap them out. But why would you want to do that? If you are going to use this station on 2m, you're MUCH better off using the PLL exciter. The transmitter noise is much lower with the PLL exciter as compared to the multiplier/PM exciter by a factor of about 22 dB at 600 kHz spacing. See http://www.repeater-builder.com/pdf/GE_Isolation_Curves.pdf > I presume that the Icoms are different too.....these Icoms have 8 pins > and my manual says that the other board uses 6 pin Icoms. Yes, the ICOM's are different. The ICOM for the PLL exciter has a varactor modulator built into the ICOM for direct FMming the carrier, unlike the PM exciter where phase modulation is done on the exciter board itself. --- Jeff
