Reply To: Understanding differences between BB60C and D Forums › BB Series Discussions › Understanding differences between BB60C and D › Reply To: Understanding differences between BB60C and D Justin CrooksModerator Justin Crooks March 29, 2023 at 9:18 am It is a hardware preselector (band pass filter before any amplification or mixing). There are 12 bands but only 10 of those are true preselector bands. DC-30 MHz is direct to ADC, and 30-130 MHz is a push-pull amplifier.
