Category Archives: Nostalgia

Would a Sony ICF-SW07 outperform a modern DSP radio?

Many thanks to SWLing Post contributor, William, who asks:

Hello,

Firstly thank you for the blog – I have been reading occasionally for several years – it’s really interesting.

I live in the UK. I own (was given as a gift many years ago) a Sony ICF-SW07 and have been playing with it for the first time in the while.

I’m wondering if you remember it or ever used it, and if you can give me a rough idea if a new radio, such as the latest Tecsun, have considerably better sensitivity – for SW and MW – or not?

Many thanks.
William

Thank you for your question, William!

To my knowledge, I’ve only used a Sony ICF-SW07 once and it was from a hotel room at a radio convention, so not ideal for really gauging anything other than economics and superficial qualities. I do know that my friend held it in high regard.  My inclination would be to say that the ICF-SW07 should hold its own and potentially even outperform many modern (late-model) portable receivers.

I do know this, William: in good condition, that ‘SW07 will fetch top dollar. I’m not sure I’d ever let go of it!

Sony ICF-SW07 owner comments and feedback?

SWLing Post readers: If you own the ‘SW07 and would like to share your thoughts with William, please comment!

Woofferton Control Desk circa 1965

Many thanks to SWLing Post contributor, Dave Porter (G4OYX), who writes:

Thought you might like to post this pic (above) just in from Phil Brooks who used to be an engineer at Woofferton.

In front of the operator on the desk is what was described as “The External Services Operational Schedule”.

The WOF version was chopped into three eight hour periods. Where there is print the senders are ON. There are eight vertical columns and they correspond to Sender 91 to Sender 96. There are two blank columns on the RHS corresponding to Sender 85 and Sender 86 that were available but not scheduled.

Assuming that they chopped the schedule from midnight to 0800, 0800 to 1600 and 1600 to midnight then it appears that VoA services start up at 0100 and run through to 0630.

Similarly for end of night shift there is BBC starting at 0730 to cover for the maintenance break at Daventry and off at 0900. VoA resumes at 1300 and carries on until 2330 throughout day and evening shift.

WOF has a maintenance break 0900 to 1300.

The six “white flags”are the “Crater keys” and are an interlock device such that if the key is removed then the sender associated with it can’t be powered so that antenna switching can take place.

The view from the window shows part of Sender 92 in the actual sender hall.

The six Peak Programme Meters PPM (UK version of VU – but much better) show the audio on the sender output or input if selected.

This desk ran from 1963 to 1981. It was replaced when automation with a Control System (the WATCH) was installed. That ran from 1981 to 2008.

Thanks so much for sharing this, Dave. We always appreciate the context you add with a career in transmitting informing you!

AM Radio History: 80th Anniversary of the “Havana Treaty,”

Many thanks to SWLing Post contributor, Bob Colegrove, who writes:

Hi Thomas,

I came across this article on Wikipedia. It is a few days late, but thought it might be of interest to others. The link is

https://en.wikipedia.org/wiki/North_American_Regional_Broadcasting_Agreement.

Briefly, this past Monday, was the 80th anniversary of the implementation of the “Havana Treaty,” which was actually signed on December 13, 1937, and finally implemented 80 years ago on March 29, 1941. It provided for reorganization of the “AM” medium wave band into frequency allocations for clear channel, regional and local stations.

AM radio was the Internet of its day. The invention of the telegraph notwithstanding, radio provided widespread, instant communication, albeit one way, to a vast population reaching hundreds of miles from the transmission source. It extended to the most rural parts of the country adding “A battery” and “B battery” to the lexicon.

The initial licensing process had been done with very little planning and forethought using 96 channels between 550 and 1500 kHz. The reorganization was the culmination of the need for some order to reduce mutual station interference and provide more reliable service to listeners. It involved frequency changes for about 1000 stations in several countries. March 29, 1941 was informally known as “moving day.”

The Wikipedia article details the changes made at that time and goes on to describe subsequent expansions of the AM broadcast band.

Fascinating! Thank you for sharing this bit of radio history with us, Bob!

1940: When Sears Roebuck sold a wide array of radio gear

Many thanks to SWLing Post contributor, Charlie (W4MEC), who shares a PDF of the 1940 Sears Roebuck Co. catalog section featuring a wide array of radio gear and test equipment.

This file is hosted on the Pro Audio Design forum and can be downloaded as a PDF (15.8 MB) by clicking here.

It’s a real nostalgia trip reading through the fine Hallicrafters, Hammarlund and National HRO descriptions. Thanks so much for sharing this, Charlie!

“How To Make a Cheap Receiving Outfit”

Our friends over at the SolderSmoke Daily News recently posted this fun piece from a January 1921 issue of Radio News:

This is great! I’ve often thought a proper ground needed daily watering. And we know it must work: Mars is some serious DX!  Professor Nutty T. Wyrlus was way ahead of his time.

Click here to check out the original post at the SolderSmoke Daily News.

The Sony FX-300 Jackal: A Holy Grail technological marvel of the late 70s

I’m a child of the 1970s and I’m glad I never knew about the Sony FX-300 “Jackal 300.” It would have been the ultimate unobtainable machine of my dreams…this, even despite the lack of shortwave.

I was browsing eBay yesterday when I saw one of these pop up in the search results.

Somehow, this radio made it past my RADAR. How? I’m guessing it’s because this model was primarily sold in Japan–?

The FX-300 sports:

  • A mini CRT television screen (to watch Voyagers!, Space 1999, G-Force, and Ultraman)
  • Precision analog tuning
  • Top-Mounted cassette player/recorder
  • AM/FM reception
  • Built-in speaker
  • Earphone/Mic external ports
  • And let’s face it: a killer design that smacks of the Apollo era 

Other than the Panny RF-2200, I’m not sure if a radio could possibly satisfy more of my design cravings.  Here are a few images I’ve unashamedly swiped from eBay:

What a Holy Grail machine, indeed! I love the tactile mechanical switches, analog dials, speaker grills, selection switches, and even (especially) the metal stand off bar at the top to protect those brilliant cassette controls.

I’m very curious if any SWLing Post readers have ever owned (or still own) a Sony FX-300. (Kei Niigata, I’ll be terribly disappointed if I learn you’ve never owned one!)

Please comment!

Radio Waves: WLW at 100, WWVB Upgrades, Ofcom Radio Amateur Data, and Unlocking the Airwaves

Radio Waves:  Stories Making Waves in the World of Radio

Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest SWLing Post readers.  To that end: Welcome to the SWLing Post’s Radio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

Many thanks to SWLing Post contributors Mike Terry, Dave Zantow, and John Figliozzi  for the following tips:


WLW-AM Begins 100th Year On Air (WVXU)

It wasn’t Cincinnati’s first radio station, but WLW-AM is still the biggest.

Cincinnati industrialist Powel Crosley, Jr. began broadcasting WLW-AM over a 20-watt station from his College Hill home on March 2, 1922 – which means that the station is entering its 100th year today.

WLW-AM wasn’t Cincinnati’s first commercial radio station, but it is the oldest surviving station from the 1920s. WMH was operated by the Precision Instrument Co. from Dec. 30, 1921, to January 1923.  WMH was sold to Crosley and merged into WLW, says Randy Michaels, the former WLW-AM programmer and Jacor/Clear Channel executive who is the best radio historian I know.

In 1934, WLW-AM became “the Nation’s station” when President Franklin D. Roosevelt flipped a switch in the White House to activate the station’s unprecedented 500,000-watt experimental transmitter under its Tylersville Road tower. WLW-AM broadcast at “super power” around the clock for five years, through 1939, and continued the mega-wattage output midnight-2 a.m. until 1943. For years WLW-AM has boasted that the 50,000-watt signal reaches 38 states. (I’ve heard the station in New Jersey, Maryland, North Carolina, Florida, Georgia, Illinois and Missouri.)

For 99 years, WLW-AM has broadcast some of the most popular personalities in town: Jim Scott, Gary Burbank, Bob Trumpy, Marty Brennaman and Joe Nuxhall, Cris Collinsworth, Jim LaBarbara, Bill Cunningham, Mike McConnell and Dale Sommers. Before them came Ruth Lyons, Bob Braun, Doris Day, Rosemary Clooney, newsman Peter Grant, sportscaster Red Barber and comedian Red Skelton.

Although WLW-AM likes to promote itself as “news radio,” it’s perhaps best known for carrying Reds and most Bengals games, plus University of Cincinnati football and basketball and Xavier basketball.[]

WWVB broadcast system upgrades may include temporary outages (WWV)

The WWVB broadcast system is being upgraded with new equipment to improve the reliability of the signal. In order to install this equipment, beginning on March 9, 2021 the WWVB signal may be operated on a single antenna at approximately 30 kW radiated power for periods up to several days in duration, and may have occasional outages. Periods of reduced power operation lasting longer than 30 minutes will be logged on the WWVB Antenna Configuration and Power web page, and any outage longer than five minutes’ duration will be recorded on the WWVB Outage web page. Upgrades are expected to be complete by March 31, 2021.

Ofcom released age of radio amateurs data (Southgate ARC)

Following a Freedom of Information request about the age of radio amateurs Ofcom said they do not hold Date-of-Birth information for many radio amateurs but released what information they do have

Ofcom say “We do not hold a full breakdown of the age of issued amateur radio licensees as date of birth is not a mandatory field for licence applications.”

In September 2000 the then communications regulator (RA) abolished the ban on people under 14-years-old holding a Full amateur licence, since that time a person’s date of birth has served little regulatory purpose.

The data Ofcom released showed they only had Date-of-Birth information for:
7,312 out of 28,845 Foundation licences
4,104 out of 12,127 Intermediate licences
44,944 out of 54,072 Full licences

As of March 1, 2021 there was a total of 95,044 valid UK amateur radio licences.

Download the FoI reply and the available age data at
https://ofcom.org.uk/__data/assets/pdf_file/0022/214915/age-of-amateur-radio-licensees.pdf

You can submit a Freedom of Information request to Ofcom online at
https://www.whatdotheyknow.com/new/ofcom

Unlocking the Airwaves (UMD)

Unlocking the Airwaves: Revitalizing an Early Public and Educational Radio Collection is a comprehensive online collection of early educational public radio content from the National Association of Educational Broadcasters (NAEB). The forerunner of CPB and its arms, NPR and PBS, the NAEB developed and distributed educational radio programs and accompanying print materials to schools and communities across the United States. What’s more, the NAEB lobbied extensively to unlock the airwaves—to access precious frequency space—in order to bring the voices of poet Robert Frost, architect Frank Lloyd Wright, anthropologist Margaret Mead, and conservationist “Ranger Mac,” among many other individuals, into American homes and classrooms.

The NAEB’s history is the dramatic story of idealists who believed in the utopian possibilities of technology for education and social uplift and who faced considerable challenges in pursuit of those goals, including economic depression, world war, and the scarcity of the electromagnetic spectrum. It’s a story that has much to tell us about 20th century American culture, as well as the 21st century’s environment of online educational technology and podcasting that we live in today.

Despite its historic importance and contemporary relevance, most of the NAEB members’ programs were never heard again after their initial brief moments on the air. The archives for the radio programs and their related paper documentation have been split for over 25 years between two institutions: the University of Maryland and the Wisconsin Historical Society. Unlocking the Airwaves reunites the split collections, finally realizing the potential of the collections of the NAEB for exploration and and the broader public.

Click here to explore Unlocking the Airwaves.


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