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22/2 vs 22/4 Alarm Wire: Which to Use
Which devices take 22/2 and which need 22/4, when 22 gauge stops being enough, and how to choose between stranded and solid alarm wire…
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RG6 vs RG59: Which Coax Cable to Use
RG6 and RG59 look alike but lose signal very differently. See the SCTE loss figures, where each cable belongs on antenna, satellite and CCTV…
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PERS Devices for Security Dealers
A practical guide to personal emergency response systems for security dealers: home-based and mobile devices, monitoring centre and cellular checks, what fall detection can…
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CMR vs CMP Cable Explained
What the CMP, CMR, CM and CMX jacket codes mean, which fire test stands behind each, where the NEC permits them and which cable…
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Planning a Point to Point Wireless Link
Fresnel zone clearance, free-space path loss, link budgets and fade margin, plus the FCC rules for 5 GHz, 60 GHz and 70/80 GHz links,…
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How to Choose an Antenna Preamplifier
A mast-mount preamp can rescue a weak UHF channel or overload a whole system. How noise figure, gain, cable loss and FM or 600…
Bursma Distributing
Blog
Guides and product notes for dealers, installers and integrators.