On 29 July 2016 at 09:07, Andy Talbot andy.g4jnt@... [ukmicrowaves] <ukmicrowaves@...> wrote:

Just in case you haven't seen it, the latest RadCom Plus has a comprehensive article on 10GHz by G0MGX, as well as one or two other excellent articles. :-)

Andy  G4JNT

Admittedly I run a somewhat unusual operating system on my main PC, but this is how your article renders:

http://www.kirkbymicrowave.co.uk/tmp/Screenshot-5.png

I have given up trying to use RadCom Plus. I don't know why the RSGB can't do what every other publisher of material does - put it in a PDF.

Instead, in the print edition, we are treated to yet another review of an antenna analyzer, where not a single known device is measured.  This time is has 11 colour photographs, showing the results when connected to various unknown impedances. Would it take a lot of effort to assemble a range of known impedances from 1% resistors and capacitors?

Anyway, the main thing is the photos look good, the author concludes it useful, and the advertiser is happy.

BTW, my radio club bought a RigExpert AA-600 antenna analyzer. Before connecting it to any electrical device, I checked the N connector, only to find the centre conductor is too far forward to meet the spec of an N connector.

http://www.dhars.org.uk/RigExpert-AA-600/Rig-Expert-AA-600s-N-connector-is-well-out-of-specification.jpg
http://www.dhars.org.uk/RigExpert-AA-600/RigExpert-AA-600-N-connector-fails-to-meet-spec-for-an-N-connector.jpg

With a bit of explanation of what is actually being measured, photos like that are far more revealing than endless photos of a device being reviewed while connected to lots of unknown impedances. With 1% resistors costing less than £0.01, and 1% capacitors only a few tens of pence, it should not be hard to assemble some known devices and measure those.

Dr. David Kirkby Ph.D CEng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Essex, CM3 6DT, UK.
Registered in England and Wales, company number 08914892.
http://www.kirkbymicrowave.co.uk/
Tel: 07910 441670 / +44 7910 441670 (0900 to 2100 GMT only please)