Miscellaneous

Behringer X1222USB Power Supply Failure – Fix

June 10, 2021 by admin

Behringer X1222USB audio mixer Power Supply fails, again!

The SMPS modules fitted to these Behringer audio mixers are crap!

Fault symptoms include the appearance of no power to the mixer, except for the +48V LED being faintly lit when phantom power is turned on.

Adam explains what he did in this video:

D6, a HER303 ultra fast … Read more...

23cm Amateur Radio Eltek Rectifier Miscellaneous Nextion HMI Video

Eltek Flatpack2 HE 48V/2000W Controller

September 26, 2019 by admin

An Eltek Flatpack2 HE 48V/2000W rectifier is being used as the power supply for a 23cm 600W LDMOS Power Amplifier project.

This touchscreen controller has been developed to control the Flatpack2 HE 48V/2000W, and display its data.

Amateur Radio Miscellaneous Miscellaneous

FS1000A 433 MHz transmitter – L2 missing

December 18, 2018 by admin

I recently purchased some of these low-cost 433 MHz SAW transmitter and receiver pairs for a current project.

The receivers work as advertised.

The transmitters?
Obviously dispatched from the factory, never tested, and without a QC inspection

How do I know this?

None of the three FS1000A transmitter boards had L2 fitted ex the factory

A rudimentary un-skilled 2 … Read more...

Amateur Radio Miscellaneous Video

Android Applications for Ham Radio

March 12, 2014 by admin

There are many ham radio orientated apps available from Google Play for your Android device, and I will be documenting a few of the apps I have found useful here.

Frequensee
https://play.google.com/store/apps/details?id=com.DanielBach.FrequenSee&hl=en

This is an audio spectrum analyser, acoustically coupled via the handset’s microphone.

Android-Apps-frequensee

Here, I am adjusting the frequency of a local oscillator (LO) in a transverter for a … Read more...

Amateur Radio Microwaves Miscellaneous

W.I.A VHF/UHF Field Day Results

February 12, 2014 by admin

Results for the WIA VHF/UHF Field Day Summer 2014 contest have just been released.

I was amused (it doesn’t take much) to note that the Contest Manager did not quote the number of logs received, as in recent years.

To satisfy my curiosity, the official summary published as PDF on the WIA web site, was used to determine this.… Read more...

Amateur Radio Miscellaneous

R&DRC Car Boot Sale

January 23, 2014 by admin

On Saturday 1 February 2014, the Redcliffe & Districts Radio Club Inc will be holding a “Car Boot Sale” at the club house in the car park area.

Event commences 9:00am

Vendors: 8:30am

This is a great chance to purge your home of all the useful but no longer required items, unwanted Christmas gifts, and general bric-a-brac. … Read more...