New in 2003 - 2004: Orion
& IC-7800
•Ten-Tec Orion
& Icom IC-7800
•Until the
Orion came out, 99% of modern transceivers were up conversion radios. (K2 the exception)
•If the first
IF is above 10 meters (30 MHz), can you switch in a narrow CW roofing filter? No
•The
fractional bandwidth of a 600 Hz CW filter at 5 MHz is the same as a 6 kHz filter at 50 MHz.
•Thus most up
conversion radios have a first IF at least 6 kHz wide & often as wide as 15 kHz.