Data is 4 Gain COMPLEX RADAR 

Preamp Gain: x10

HDR gain series: 
x1    x10    x100    x1000
dc   1.59hz  15.9hz  159hz

AS in:
x1 is DC coupled
x10 is on a 1.59hz highpass filter
x100 is on a 10.59hz highpass filter
x1000 is on a 100.59hz Highpass filter

Data is signed 16-bit stored as decimal-ascii (plain text numbers)

sample of 8 column tab-spaced data:
	REAL			|	IMAG
x1	x10	x100	x1000	 x1	x10	x100	x1000

44	-179	-3722	-30	-2525	-695	-3167	-6879	
29	-244	-3702	622	-2653	-794	-3382	-7892	
42	-255	-3640	1359	-2581	-686	-2594	-4784	
33	-211	-3787	-251	-2565	-578	-1789	2619	
-73	-183	-3551	341	-2503	-651	-2549	502	
-4	-221	-3342	1875	-2517	-674	-2745	-3612	
33	-183	-3067	3489	-2506	-753	-2963	-3442	
-23	-159	-3059	3864	-2545	-687	-2473	-2414	
22	-171	-3202	1881	-2440	-623	-2320	503