> >Try this site. >$250 >http://www.tagpilotsupply.com/browseproducts/RHP-520-Nav-Comm-Transceiver.HTML
I'm not seeing it listed but I purchased an adaptor that replaced the battery and allowed me to plug (cigarette lighter) into aircraft power. That shortens the radio my 3/4 the size of the battery. You could run it with the rechargeable battery pack plugged in to aircraft power and have backup in case of electrical failure but the unit would be larger. They want an additional $30 for the external power plug, further down on page. >Larry Flesner >
