Jiggle/hypomag need more than the 2 choices provided by AbstractMagnitudeMethod.java
Currently AbstractMagnitudeMethod.java allows the user to set two choice levels of amps, through the "config" field of the AppChannels DB table. Traditionally broadband channels (HHE and HHN) have config = '1' while accelerometer channels have config = '2'. This causes the magnitude method (i.e. CISNMl2) to select amps from the broadband channels if they meet other criteria; otherwise amps from the accelerometer channels are used in the summary magnitude. This does not provide enough levels of choice. There may be different sample rates for broadband or accelerometer channels, or there may be more than one sensor of either type at a station. I would like to see an unlimited level of choices provided by AbstractMagnitudeMethod.java, including a NULL or 0 value that would mean "don't ever use this channel for summary magnitude"