Video: Dan listens to RNZI’s Sunday Night with Grant Walker on a Hammarlund SP-600


Many thanks to SWLing Post contributor, Daniel Hawkins, who writes:

One of my favorite Radio New Zealand International programs is Sunday Night with Grant Walker. This program is heard on RNZ in New Zealand from 8:06-10:00 p.m. and is run at the same time on RNZI. Sunday Night features hit oldies and one interview. Each program highlights oldies from one year. Last Sunday was 1977 and the week before was 1955. My video from last Sunday includes a favorite that I haven’t heard for many years.

The RNZI broadcast of Sunday Night is 0806-1000 UTC Sunday on 9700 kHz. That’s 1:06-3:00 a.m. Sunday, PDT. Definitely a show for night owls. West Coast reception is nearly spectacular for the distance: 6,600 miles from my location in Davis, CA, USA. The radio used for the video is a Hammarlund SP-600 JX-21, built in 1956 or 1957. Yes, the tuning dial is a little off on this band. I’m using the 8 kHz selectivity setting with fully advanced AVC. The antenna is a 106’ outdoor random wire. The speaker is antique as well: a 10” Jensen PM-10C with matching transformer connected to the 600 ohm audio output on the SP-600.


Click here to view on YouTube.

Wow! Thank you for the program recommendation, Dan!  I, too, have an SP-600–there are few valve receivers that can rival it for both audio fidelity and sensitivity. What a beauty of a rig you have there!

A Great Pirate QSL Card!


Here’s a great example of a QSL report from Pirate Station X-FM Stereo Shortwave monitored Halloween 2015. Not only is it a beautiful card, Redhat (the Deejay) also included the playlist as a .txt attachment.

As I recall he also made live announcements of who had left reception reports/comments on the HF Underground forum as well as for those who sent him emails directly.

I sent a short recording as part of my reception report, and it was an added bonus to see that mentioned in his QSL card.

I am quite impressed with all the effort made to turn out a quality QSL card, but a Pirate transmitting in stereo obviously appreciates quality!!

Pirate Radio receptions are memorable events on their own, but the QSL cards really make them special! Happy Pirate hunting!

Robert Gulley, AK3Q, is the author of this post and a regular contributor to the SWLing Post. Robert also blogs at All Things Radio.

The AAA-1C: An affordable loop antenna amplifier kit


I recently stumbled upon the Active Antenna Amplifier (model AAA-1C) by LZ1AQ. At 87.00 EUR, it’s a pretty affordable and flexible solution for those who would like to design or use a loop antenna.

According to the website, it packs a lot of features:

  • 4 remotely switched modes (Loop A, Loop B, crossed parallel loops A&B and dipole)
  • Each mode can be switched immediately
  • Good sensitivity and a flat frequency response
  • High dynamic range
  • Protected input from strong signals
  • High immunity to local noise with balanced amplifiers and balanced feed line
  • Balun transformer coupling for common mode noise reduction
  • Extensive documentation manuals with detailed description how to build your own small antennas

The amplifier is described as a kit because you must mount the board, wire up the antenna and set up remote switching yourself. It appears the SMT board comes pre-populated, though so I’m not sure if any actually soldering is required (perhaps someone can verify).

AAA-1B kit components

AAA-1C kit components

Click here to download the mounting instructions (PDF).

I’m tempted to purchase one this winter for use on mediumwave.

Click here for more info about the AAA-1C at LZ1AQ’s website.

Have any SWLing Post readers built and used this amplifier? Please comment!

Secret life of village that helped crack WWII code

WWii-radio(Source: Southgate ARC)

Whaddon: Secret life of village that helped crack WW2 code

On May 9, 2016, Milton Keynes Amateur Radio Society members operated GB1SOE to establish contact with French special event station TM75SOE using WWII equipment

This was to commemorate the 75th anniversary of the first transmission sent back to Whaddon Hall, Buckinghamshire, by Special Operations Executive (SOE) agent Georges Begue. They operated from Whaddon Hall during Monday using a replica MKIII transmitter and HRO receiver,  on the French side a WWII B2 spy set was used.

The BBC report: The Codebreakers at Bletchley Park are well known for their top secret work which helped to change the course of the World War Two.

But the Buckinghamshire village of Whaddon, just a few miles down the road, has long been forgotten, despite the vital role it played. It was codenamed Section 8 and was a satellite station for Bletchley Park.

It is hoped a new memorial will give it its rightful place in history.

Watch the BBC TV report on the commemoration at Whaddon

A shorter version of the BBC report is at

Further information in the entries for TM75SOE and GB1SOE

Milton Keynes Amateur Radio Society (MKARS)

From the Isle of Music July 18-19

The July 19 (July 18 in the Americas on WBCQ) edition of From the Isle of Music includes more of María Felicia Pérez, Director of Coro Exaudi, winner of the Choral Music category in Cubadisco 2016, and our very special guest is El Noro, winner of the Popular Dance Music – New Artists category in Cubadisco 2016. We’ll be playing some of the album Sin Escala by his group El Noro y Primera Clase and conversing with him about the album and the group. We will also have some Reyes 73 from the 1970s.
Two options on shortwave:
WBCQ, 7490 KHz, Tuesdays 0000 UTC (8pm EDT Mondays)
Channel 292, 6070 KHz, Tuesdays 1900 UTC (2100 CEST)
See the NOTES section of our Facebook page for more information