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天线系统计算器 | Antenna System Evaluator

2013-03-11 点击：0

CB and Amateur Radio Antenna System Evaluator
This JavaScript program evaluates the performance of your antenna system, computing the consequences of SWR and feedline loss. 73 de Ron JavaScript PROGRAM by N6ACH

original program concept done in CPM basic by KC6A and N6NB.
天线系统计算器

Coaxial Cable Loss in db per 100ft.

Frequency in Mhz Coax Style	30	50(6m)	100 (2m)	200	300	400	500	600	700	800
Andrews FSJ4-50B (1/2" Superflex)			1.05	1.50	1.84	2.18	2.44	2.69	2.95	3.16
Belden 9913 (RG-8 type)	.65	.8	1.30	1.80	2.25	2.70	3.00	3.30	3.60	3.90
Belden 9914 (RG-8/U type)	.8	1.1	1.60	2.40	2.95	3.50	4.00	4.50	5.00	5.35
Andrews FSJ1-50 (1/4" Superflex)			1.85	2.68	3.30	3.92	4.40	4.89	5.37	5.78
Belden 8214 (RG-8/U type)			1.80	2.70	3.45	4.20	4.73	5.27	5.80	6.25
Belden 8267 (RG-213/U type)			1.90	2.70	3.40	4.10	4.90	5.70	6.50	7.05
Belden 8268 (RG-214/U type)			1.90	2.70	3.40	4.10	4.90	5.70	6.50	7.05
Belden 8242 (RG-9/U type)			2.10	3.00	3.90	4.80	5.37	5.93	6.50	7.05
Belden 9258 (RG-8/X type)			3.70	5.40	6.70	8.00	9.03	10.07	11.10	11.95
Belden 84142 (RG-142 type)			3.90	5.60	6.90	8.20	9.13	10.07	11.00	11.75
Belden 9273 (RG-223/U type)			4.10	6.00	7.40	8.80	9.87	10.93	12.00	12.90
Belden 8240 (RG-58/U type)	1.8	2.9	4.504.50	6.80	8.40	10.00	11.33	12.67	14.00	15.00

power from xmitter in wattswer from xmitter in watts	-1VSWR @ xmitter
feed line loss in db( must be in line with other values)	Enter 2.2 for dipoles; add 2.2 for antennas rated in dBd

reverse power at xmitter	-1VSWR @ antenna
forward power in watts at antenna	reflected power in watts from the antenna
true power in watts into antenna	power in watts lost in feed line
db line loss including EIRP in watts