RF Coaxial Cable - Frequency Against Loss

Rayfast are pleased to be able to supply RF Coaxial Cable.

With Coaxial Cable there are several factors that need to be considered when finding the best for the application.

The main factor is ensuring the frequency bandwidth is maintained. With so many manufacturers having bespoke designed cables through to industry standard RG and MIL-C 17 cables, and now VG standards, the task of defining the best one for the application is generally down to the engineer’s
experience of products previously used.

The difference in loss between an RG174 and an RG213 at 1 GHz is 4 times greater, which in output power, with a 100 watt transmitter and a 10 foot cable, would mean losing 50% of your power with the RG174 and less than 20% loss in power with an RG213 cable.

In conjunction with Loss/Attenuation other considerations
to look at would be cable O/D.

To assist engineers, we offer a range of manufacturers products, working together with some of our key suppliers including; from Huber & Suhner, Amphenol CIT, PIC Wire and Cable, and Intelliconnect. This ensures that we can help with dual sourcing and lead time to meet
critical delivery schedules.

Attenuation (dB per 100 feet)
Loss*	RG-174	RG-58	RG-8X	RG-213	RG-6	RG-11	RF-9914	RF-9913
1MHz	1.9dB	0.4dB	0.5dB	0.2dB	0.2dB	0.2dB	0.3dB	0.2dB
10MHz	3.3dB	1.4dB	1.0dB	0.6dB	0.6dB	0.4dB	0.5dB	0.4dB
50MHz	6.6dB	3.3dB	2.5dB	1.6dB	1.4dB	1.0dB	1.1dB	0.9dB
100MHz	8.9dB	4.9dB	3.6dB	2.2dB	2.0dB	1.6dB	1.5dB	1.4dB
200MHz	11.9dB	7.3dB	5.4dB	3.3dB	2.8dB	2.3dB	2.0dB	1.8dB
400MHz	17.3dB	11.2dB	7.9dB	4.8dB	4.3dB	3.5dB	2.9dB	2.6dB
700MHz	26.0dB	16.9dB	11.0dB	6.6dB	5.6dB	4.7dB	3.8dB	3.6dB
900MHz	27.9dB	20.1dB	12.6dB	7.7dB	6.0dB	5.4dB	4.9dB	4.2dB
1GHz	32.0dB	21.5dB	13.5dB	8.3dB	6.1dB	5.6dB	5.3dB	4.5dB
Imped	50ohm	50ohm	50ohm	50ohm	75ohm	75ohm	50ohm	50ohm
Note: Coax losses shown above are for 100 feet lengths. Loss is a length multiplier, so a 200 ft length would have twice the loss shown above and so on. This loss multiplier factor is why you should keep cable installation lengths between radios and antennas as short as practical!