Revenue Recognition (Tables)

6 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following tables provide details of revenue by major products group:

Product group	Fiscal 2019		Fiscal 2018
Microwave Filter (MFC):
RF/Microwave	$	792,661	$	536,488
Satellite		422,434		673,046
Cable TV		227,237		145,387
Broadcast TV		462,303		161,673
Niagara Scientific (NSI):		84		4,837
Total	$	1,904,719	$	1,521,431
Sales backlog at March 31	$	916,422	$	928,718