Tempest in a teapot -- what can SKARAB reveal for you?

Summer in the northern hemisphere is a great time to view the constellation Sagittarius by looking south and left of the bright band of the Milky...

Busting Watson Watt DF ambiguity - maths edition

A previous blog post introduced the hybrid loop-Adcock antenna, which, in a crossed configuration, is excellent for Watson Watt (WW) radio...

Mashup of classic DF antennas - 1000X better!?

One early DF antenna innovation that stands the test of time is delineated in Frank Adcock's British Patent 130,490 entitled "Improvements in...

The key to RPAS, UAS and drone detection

Drones are all the rage.  These amazing machines offer fun capabilities like aerial photography and videography -- even racing! However, they can...

So how do you measure J/S anyway?

It is suprisingly simple to measure jamming (J) to signal (S) ratio, once you get your head around the implications of the J/S equation.  Ends up...

How much J/S do you REALLY need?

Electronic warfare is making the news a lot lately. Not only do our adversaries employ, or seek to employ, sophisticated capabilities, the US ...

Rubber beats steel...for manpack antennas, anyway

Manpack antennas that lack flexible connections to electronics housings are destined for short lifetimes.  The rigors of real-world...

How much DF sensitivity do you REALLY need?

When evaluating relative merits of a direction finding system, most folks focus on 'accuracy,' which is generally a measure of the quality of the...

How much antenna gain do you REALLY need?

Customers often ask us to help select antennas to assure sufficient range of their wireless communication systems.   Providing an answer though...

How much DF accuracy do you REALLY need?

Practitioners of radio direction finding (DF) focus on optimizing line of bearing accuracy to emitters. Presumably, the smaller the RMS of the...

DF Calibration on the veld

Obtaining excellent performance from a complex electromagnetic device like a correlative interferometric direction finding antenna system is...

Decoding DF accuracy specs - a primer

Direction finding antennas are complex devices, so it is surprising that some people try to boil their performance specs down to a single number....

VSWR :: Return Loss and all that

Originally Published 5/28/2011

When introduced to return loss in the context of antenna impedance matching, my first thought was 'the RF gurus...

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