With all the specialty aircraft equipment and accessories we have here at SkyGeek.com, you might start to feel a little lightheaded every now and then. If that's the case, just pick up the phone and call our customer support professionals. They're very calming and they're also very knowledgeable about our products, so they can answer whatever questions you might have. Dittel Messtechnik specializes in high-performance radios. We have their 10-pole accessory connector that's compatible with Walter Dittel FSG5W and FSG7016 hand-held radios. The FSG5W is their VHF/AM hand-held transceiver with 1,040 channels and a frequency range of 118.000 MHz to 143.975 MHz. The FSG7016 is a UHF/AM air band hand-held transceiver with a frequency range of 225.000 - 399.975 MHz. If you have any questions about compatibility, give us a call.