Shortwave listening and everything radio including reviews, broadcasting, ham radio, field operation, DXing, maker kits, travel, emergency gear, events, and more
I just noticed that Blinq.com has a “Used – Very Good” Sony SRF-M37W AM/FM/WX digital walkman with headphones for $18.19 shipped.
While I don’t think the SRF-M37W will win any DXing awards, it is a very practical and lightweight portable for outdoor/active use (hiking, walking, running, biking, etc). I was mighty tempted to purchase this one and mount it on my mountain bike, but I have other portables that could do the job.
Features:
Digital AM/FM/Weather stereo tuner
Direct weather and preset access buttons
20-station preset memory
Digital LCD digital with clock and battery indicators
Tony Westbrook recently contacted me about a regenerative receiver kit he has designed and produced in the UK. It’s called the KRC-2. Here’s the product description:
1 – 30 MHz with band spread tuning.
Regeneration with a difference. The regeneration setting on the KRC-2 is unaffected by the receiver tuning or the antenna coupling. How do we achieve this? The regenerative stage is fixed at 10.7MHz and used as an IF amplifier. The main receiver board is extremely simple to construct using only one FET and an audio IC. Like all the KRC kits it comes with a comprehensive construction manual which brings this project well within the grasp of the keen constructor. It was referred to as “a very sensitive little receiver” by Rob Mannion of Practical Wireless. Its unconventional design and simplicity should amaze even the experienced constructor. Case size 7 x 4 x 3 inches. 6 x AA batteries supplied.
According to Tony, the kit comes with everything; UK orders are even supplied with batteries. Tony stated, “the only thing the customer needs is a soldering iron, solder cutters, etc.”
By request, Tony sent a few construction photos and three videos of the radio in operation:
Yesterday, my buddy Eric (WD8RIF) sent the following message:
“Take your girls outside with an HT and listen to the ARISS pass in just about 10 minutes. The downlink freq is 145.800.”
Though I was in the middle of another project, I took Eric’s advice: I grabbed my Yaesu VX-3, corralled my daughters and ran outside. Eric’s message was already eight minutes old when I read it, so I only had about two minutes to get ready.
My Everyday Carry (EDC) pack, loaded with all of the essentials.
Fortunately, I always have a Yaesu VX-3R loaded with fresh batteries in my EDC pack (above).
Official NASA portrait of British astronaut Timothy Peake. Photographer: Robert Markowitz
With the VX-3 tuned to 145.8 MHz, we waited as the ISS made its way above the horizon. The downlink audio of astronaut Tim Peake (KG5BVI) communicating with Walter Jackson Elementary in Decatur, Alabama, started to punch through the static after a minute or two. We listened the entire time we had line-of-sight to the ISS–about five minutes or so. We were pretty deep in a valley at that point, so I’m pleased we were able to catch even that much of a pass.
Of course, we could only hear one side of the conversation: the downlink from the International Space Station.
It was a memorable event for my girls who have seen ISS passes at night, but had never heard live audio from an astronaut before.
Eric pointed me to the ARISS “Upcoming Contacts” (http://www.ariss.org/upcoming-contacts.html) page where future ARISS QSOs are listed. Evidently, this particular ARISS QSO was the third Eric had monitored in two weeks.
Pretty much any receiver that can tune to 145.80 MHz FM–or a VHF scanner–can hear the ARISS downlink as long as the ISS is passing overhead during the transmission. Of course, if you have a high-gain antenna that can track the ISS as it moves across the sky, you’ll get even better results than I did with my basic rubber duck antenna.
My advice? If you want to impress a child (or your inner child–!) find a little time to listen to a future ARISS QSO!
Indeed, the next step for me is to see if I can propose an ARISS QSO for our school group!
Many thanks to SWLing Post reader, Mark Hirst, who writes:
Thomas,
I have been very impressed by the shacks featured on SWLing !
I don’t really have the room to accommodate such large collections, or to dedicate a special area to just radio.
I tend to perch a radio on a spare surface in the front bedroom, and then cycle through my small collection on a weekly or bi-weekly basis, returning the previous radio to storage to await its turn in a month’s time.
Since newer houses and gardens are typically quite small in the UK, I’ve always been thinking in terms of radio on safari, so with the weather starting to improve, I present to you my ‘shack’ consisting of a recently acquired IC-7100 inside a fortuitously sized toolbox. The radio runs in the bedroom like this too, usually connected to a Wellbrook loop when not transmitting.
The picture [above is of the] head unit in stowed configuration, as the lid of the box doesn’t quite clear the unit when sitting on the base. The space on top of the radio is then filled by the SOTA Beams antenna bag and other sundries. The battery travels separately in the backpack.
My plan was to never have to connect/disconnect the ethernet style cable between the two halves, looks like the plan worked !
This is a brilliant kit, Mark–a great way to escape urban radio interference! The Icom IC-7100 is uniquely qualified for the deep case, too, since the control head can sit on top of the body while in use. The angle of operation is also ideal. Very cool–thanks for sharing!
Two weeks ago, through a radio preservation group, I met the son of Heathkit product designer of the 1950s-70s, Stu Sizer––”stylist, artist, maker of models, bon vivant.” His son described the discovery of a few vintage Heathkit brochures, photos, and illustrations his father kept in his family’s basement shop, many of which had been scanned at some point.
Stu Sizer––”stylist, artist, maker of models, bon vivant”––was tasked with crafting Heathkit’s user-friendly and attractive exterior designs. For many years Sizer was Heathkit’s only product designer, and was therefore often busy. “He was a great dad,” his son told me, “but he spent a lot of time in the basement proof-building kits.” He adds wryly, “Let that be a lesson to the hams of this world.”
Sizer’s son kindly shared with us the following scans and photos of his dad’s work, many of which are original drawings; the series concludes with some clippings featuring Sizer.
Tonight on Allan Weiner Worldwide (WBCQ 7490 kHz coming in beautifully on my FRG-7) Allan mentioned a shortwave radio converter for car radios. The package uses a small box which plugs into the cigarette lighter socket and can either use an antenna made for the converter or an antenna supplied by the user. The unit can display frequencies through the FM RDS display, and has a key-fob controller for scanning and saving stations into memory.
Here are some of the features listed by the manufacturer:
FEATURES OF THE BST-1
Excellent sensitivity – 0.5 microvolt at the antenna connector will stop the preset scan and provide a very listenable signal. Automatic Gain Control – Keeps audio levels constant for weak and strong stations.
Full Shortwave band coverage – tune to any 5 kHz spaced AM channel from 2.3 to 26.1 MHz. The frequency coverage is actually from 150 KHz to 30 MHz but with reduced sensitivity when operating outside of the shortwave bands, especially below 1.8 MHz. This extended frequency range lets you listen to the 10 and 160 meter ham radio bands as well as CB channels. If you are close to the transmitting antenna, you can even hear airport beacons in the 200 to 400 KHz radio-location band.
DSP (digital signal processor) selectivity – Sharp 3 kHz for speech or wider bandwidth for Hi-Fi music.
Noise Blanker – A digital noise blanker greatly eliminates any spark plug noise from car engine that can disrupt reception.Built-in crystal controlled FM transmitter – Has RDS to display 5 digit tuned shortwave frequency and preset channel number/ “S” meter on the vehicle’s FM radio.
Four BST-1 broadcast FM frequencies can be selected by the Key Fob Controller so you always have a clear FM channel to use. Programmed with 88.3, 88.5, 88.7, and 88.9 MHz – one of these channels will always be clear to listen for the BST-1’s FM transmitter.
If you know Morse code for the numbers 0-9 (very easy to learn), you can use the Key-Fob to activate a Morse code annunciation of tuned frequency. This aids in operation if your FM receiver doesn’t have RDS display or if you can’t look at the display on the FM radio while driving.
Key-Fob command for instant selection of WWV channels – 5,10,15, and 20 MHz for accurate time and signal propagation checks.
High or Low sensitivity selection by the Key Fob – Optimum performance can always be obtained during conditions of very strong signals.
Rugged construction – Designed for automotive use.
Memory storage of up to 100 preset channels- After changing channels, the preset channel is shown on the RDS display for 3 seconds and then the display switches to show the “S” meter.
The BST-1 can be manually tuned to any 5 KHz channel in the turning range and if desired, that new frequency stored in preset memory (up to 100 presets). Note that the BST-1 radio is AM reception only so 5 KHz tuning intervals are optimum since all International Shortwave stations are on 5 KHz channels. A digital AFC (Automatic frequency control) circuit in the BST-1 is used to automatically compensate for stations that are slightly off (+/- 150 ppm) the exact 5 KHz channel.
Pre-programmed- The BST-1 is ready to start listening right away. Comes with 50 popular U.S. and International shortwave stations as well as WWV at 5,10,15 and 20 MHz.
Easily add or delete preset channels using the Key Fob controller.
For a starting price of $179.50 (as of this writing) plus shipping, this is an intriguing possibility for having shortwave radio in the car. 73, Robert
