So if I use the 8900 as a base, I can use my HT (FT-60R) to opporate remotely at reduced
power. Very cool feature. Thanks, KK4MSE.
A couple of suggestions. The 8900 is a very small radio. And, can get very warm while transmitting all the time in crossband repeat service when you have a contact. You might want to configure it for UHF low power (5W) transmit power and, 25W or less on whatever the VHF band you use with it when using crossband.
Excellent point! You also have "reciprocity" coming into play. Your portable is only going to be talking in at a certain power level (1-5 watts), you just do not need 50 watts of talkback from your '8900 to your portable. If you cannot be heard by your '8900 it makes no sense that everyone within 30 miles can hear your re-transmission.
Cross band repeaters have been around for a pretty long time. In the language of the Batwing (Motorola) this used to be called "PAC-RT" where a police officer would have a UHF portable that would use a cross-band repeater in the trunk of the car to retransmit through a much higher power radio in the VHF-LOW (30-50 MHz) or VHF-HIGH (150-174 MHz) at power levels of up to 110 watts. http://www.onfreq.com/syntorx/pac.html