Monthly Archives: August 2020

TX Factor Episode 26

Many thanks to SWLing Post contributor, Eric (WD8RIF), who notes that the 26th episode of TX Factor was recently released. Here’s the show summary:

A post-lockdown special – well, not really! Just a bumper edition of TX Factor that was planned for March 2020, but due to the Covid-19 restrictions never quite happened! We hope you are all safe and well and enjoying the summer opportunities for amateur radio despite the various restrictions upon us.

Back in February we dropped in for tea and biscuits at the new(ish) QTH of Tim Kirby GW4VXE to learn more about his passion for all things VHF / UHF. Also in February, Bob and Mike fitted a Radio Analog PTRX-7300 RF interface module into Bob’s beloved IC-7300, and, yes, can it be possibly true . . . bang up-to-date, Bob reviews one of the first Icom IC-705 SDR QRP all-mode transceivers in the country. We hope you enjoy the show!

Click here to view on YouTube or on the TX Factor website.

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Giuseppe’s cross-loop experiments

Many thanks to SWLing Post contributor, Giuseppe Morlè (IZ0GZW), who shares the following:

I’m Giuseppe Morlè from Formia, central Italy, on the Tyrrhenian Sea.

I wanted to share with you and friends of the SWLing Post community this antenna project of mine dedicated to those who do not have enough space on the roof or in the garden to install antennas.

These are two separate loops, with two different diameters, one 60 cm, the other 90 cm, each with two variables for tuning … the system is able to receive from 3 to 30 MHz.

I joined these two loops in an opposing way, better to say crossed that can communicate with each other due to the induction effect that is created between the two small coupling loops that are placed one under the other at the top.

In the videos you will be able to see how the antenna system receives. I can use one loop at a time, to detect the direction of the signal or I can use them together for a more robust signal and in an omnidirectional way.

I really like experimenting with the induction effect and you can see that even when closed at home the two loops do a great job.

From my YouTube channel:

I’m not a technician but I really want to experiment to try to listen as well as possible.

Thanks to you and CIAO to all the listeners of the SWLing Post community.

Giuseppe Morlè iz0gzw.

Very cool, Giuseppe! I must say I’ve never tried dual loop experiments like this where one can experiment with the induction interplay. I imagine this could give you some interesting nulling capabilities if you have an unwanted station interfering with a target low-band signal. Thank you again for sharing!

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Video: Josh’s Lab599 TX-500 Deep Dive & Review

Many thanks to SWLing Post contributor, Don (W7SSB), who notes that Josh (KI6NAZ) at Ham Radio Crash Course has just posted his final TX-500 video. If you’ve been considering the TX-500, it’s very much worth your time:

Josh is actually sending me this very same TX-500 for review in The Spectrum Monitor magazine and here on the SWLing Post.

Please comment if you have any questions and I’ll do my best to answer them while I have the unit here at SWLing Post HQ.

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George reviews the new Tecsun PL-990

Many thanks to SWLing Post contributor, George Joachim, who shares the following review of the Tecsun PL-990.

AS George points out, the PL-990 in the following review is not the “export” model Anon-Co will eventually offer for sale later this year. It might be nearly identical in every respect, but at time of posting Tecsun is addressing some final firmware updates the the “export” version prior to starting a full first production run. As we learn more about the various versions of the PL-990 in the wild–compare serial numbers, etc.– we will eventually sort out any nuances between versions.

George purchased this PL-990 on AliExpress and I am incredibly grateful to read his review of this model:


Review of the Tecsun PL-990

by George Joachim

Introduction

The Tecsun PL 990 is one of the three new radios offered by Tecsun and according to the news from the company these may be the last developed.

The other two radios are the Tecsun H-501 and the PL-330. The H-501 is the largest with dual speakers and the PL-990 is of a similar size to the PL-880, PL-680, PL-660 and PL-600. The PL-330 is the smallest and is similar to the PL-310ET and PL-380.

The Tecsun PL-990 is a medium sized portable multi-function radio. It has the following features:

  • Shortwave (SW)
  • Medium Wave (AM)
  • Frequency Modulation (FM)
  • SSB (LSB and USB)
  • Bluetooth connectivity (BT)
  • MP3 playback from a microSD port
  • Clock and two Timers with Alarms
  • Auto Sleep
  • powered by a single 18650 rechargeable 3.7V Lithium Ion Battery, unbranded and supplied.

The radio is a refinement of the PL-880 with styling similar to the PL-680. It is matte black with a hint of grey, finished in a quality plastic case and it is ergonomic with a good weight and feel, just like the PL-880.

Background

This is my fourth portable radio of this size. I had owned the analogue Sony ICF-7601 back in the day and then the PL-660 and PL-880. The Sony was destroyed by me doing naughty electronic experiments and both the PL-660 and PL-880 were gifted to my family members.

Having no such radio, I considered the purchase of a new PL-880. I had contacted Ms Anna from the Anon Co. in HK and she was very helpful and also mentioned that Tecsun is developing a couple of new radios, but these are not yet available. This got me interested in the PL-990 and the H-501. I had also considered the H-501, because I liked the fact that it has two speaker sets, however the radio did seem a big bulky for my needs. I have a few desktop radios, but I needed something to be on my lap or by the bedside. Usually I fiddle with these portable radios lying on my chest until I find something nice to listen to then let it play on auto sleep until it puts me to sleep. I am sure some of you guys do this too. I imagine the H-501 would be a bit big for this.

After reading articles on the SWLing Post and despite the warnings about Pilot run versions and Chinese versions, I decided to risk a purchase from AliExpress. This has been my one and only purchase on AliExpress so far.

Purchase

My radio was supplied by a company called Li Jia Shops in AliExpress. It cost a steep US$400 and US$157 DHL shipping. Totally expensive and risky in my opinion, but I am known to be reckless with my online purchases.? Besides, I wanted a new toy!

As this was my first purchase from AliExpress, I was a bit apprehensive, as I mainly use eBay. Also buying electronic items from China is a bit risky. One may end up not getting the item, or getting it after some significant delay. As you all know, electronic items exported from China is the largest electronics export operation in the world, so there is congestion in logistics and Covid-19 also adds to that. Selecting DHL to ship the item was very expensive, but I believe necessary. Waiting for an expensive electronic device for two months is a painful experience, at least from my perspective. Using DHL took a mere 12 days. The main delay originated from the shippers. They give the shipment information to DHL well in advance, but they do not actually take the item to DHL unless it suits their facilitators who they assign. The shipment shows as shipped and DHL status is ‘shipment information received’, but in reality the item is still with the shippers. Once it does actually get to DHL, then it is quite fast. Usually the shippers are located in the Shenzhen area and DHL is in Hong Kong. AliExpress will not release the payment unless the buyer confirms receipt of the item as described, so there is some safety for the buyer.

Overall, I was satisfied with the purchase and shipping process. But it was expensive and it was risky. It would be better to approach Anon Co in HK for your purchases rather than AliExpress and Bangood, but ultimately it is the buyer’s decision. For the English Export Version you must wait a bit I think.

The Export Version, the Chinese Version and the Pilot Run Version

This aspect is a bit confusing. From what I understood, and I could well be wrong, the versions are as follows:

Pilot run: this has the buttons as TIME DISPLAY and ALARM (this is also slightly cheaper on AliExpress and Banggood)
Chinese version: TIME TIMER A and TIMER B, but with Chinese manuals (what I have acquired)
Export Version: TIME TIMER A and TIMER B but with English manuals. (there may be further changes / improvements, as these units are still not available)

I am not sure about the firmware. My unit is presumably a later Chinese Version. And everything works properly as per the Firmware. The serial number of my unit indicates a possible manufacture date of July 2020, although this could be wrong.

Review

The review will be based on the different functions of the radio.

FM reception

In the UAE we are blessed with several English language FM radio stations with good music and limited advertisements. Each station caters to particular tastes, such as 90s music, modern and classic hits. Reproduction was crisp and in full bodied stereo. The speaker is powerful and not unlike the speaker of the PL-880.

MW reception

I do not usually listen to AM or MW. However, the radio does a good job receiving these stations with a deep sound and minimal crackling.

SW reception

Shortwave is still out there folks, although its variety and abundance is greatly reduced. I do receive quite a few broadcasts using the telescopic antenna. Activity is concentrated around the 16m band, the 31m band and the 49m band, although occasional broadcasts can also be found in the 22m, 19m and 41m bands. The SYNC function holds on to weak broadcasts and makes them intelligible. I am sure that the Radio would do a commendable job if one could use a time machine to take it back to the SW hay-days of the 80s and 90s. I wonder if they have any time machines up for sale in AliExpress? 🙂

SSB Reception

Right out of the box I was able to fine tune into 14,182.10 kHz on the USB and hear HAMS ‘doing their thang’. It was excellent and far better than what similar attempts resulted in my previous Tecsun radios. I do think that Tecsun has improved the SSB reception with this receiver. I am not a very capable SSB chaser, but if there is something SSB out there, the PL-990 should able to pull it in. One needs to know where and when to tune and luck also plays a role.

LW Reception

Yes it is there, but no, I have never heard anything in there using the PL-990 and all my previous radios. I do wonder if submarines transmit in the LW band? I don’t know.

MP3 Playback

A lot of listeners are not interested in MP3 listening, but I am. Especially with SW being so sparse nowadays. MP3 was a feature missed from previous Tecsun radios. I enjoy compiling a list of favourite tracks and listening to them, while engaged in a barbecue or in car maintenance or cleaning. I am also a train modeler and like to listen to MP3s while running my trains. Tecsun has even supplied a Sandisk micro SD card of 16GB with various Chinese and international tracks, which I think was nice of them.

Bluetooth

There is no Bluetooth button, but by pressing the RADIO/MP3 button an indication will come on the display as BT. The radio can then be conveniently paired with a mobile phone to transfer the audio from a you tube clip or similar to the radio, although I wouldn’t see the need for that. I am not sure if files can be transferred to the radio this way, I believe the function is only for audio playback.

Presentation and packaging

Much like the PL-880, the radio comes superbly packaged. The cardboard box functions as a glossy display of the radio and its features. Inside there are foam holders and there is a sturdy grey plastic toolbox case. In the toolbox case there is the radio, within a nylon bag inside its light brown faux leather pouch. The radio as well as the pouch have a carrying strap. In the toolbox there is a black foam case that contains:

  • A blue 18650 3.7 V Lithium Ion Battery
  • A long wire antenna in its real
  • A short(ish) charging cable
  • A UK style plug adaptor
  • A Chinese style charger with 2 USB outputs
  • A Chinese language operation manual
  • A Poster containing the map of the world and country Radio codes
  • On the other side of the Poster is a detailed view of the PL-990 with illustrations in Chinese

Batteries

The radio uses one Li-Ion type 18650 3.7V battery. The included type is a blue generic unbranded type, I would have preferred a Tecsun-branded battery. I have a couple of vape equipment batteries –Golisi S30, which I believe are superior to the unbranded battery. (No, I am not a Vaper).

Concluding Remarks

The latest Tecsun offering is a great conclusion to their series of multi-function portable radios. It offers some advantages over the PL-880, such as:

  • Styling
  • MP3
  • Much improved SSB reception
  • Superb FM reproduction
  • Bluetooth

Apart from the above I don’t see a compelling reason to acquire the radio unless, SSB or MP3 is important for you. Or like me, you just must have the latest.

Score

Style: 90%
FM: 100%
SW: 90% SYNC available
SSB: 95%
MW: 85%
LW: 80%
Battery Life: 70% for the provided battery 8/10 for externally sourced batteries
Display: 70% (the display is good, but it hasn’t really changed from previous displays)
Buttons: 85% Sturdy and precise, no wobbly buttons here.
Dials: 90% hard and precise with excellent indentations
Ports: 90% strong a tight female ports with protection plugs
Packaging: 95% anything you could wish for.
Documentation: 100% for Chinese speakers
Antenna: 60% normal telescopic antenna, should be a bit more shiny IMO.
Stability: 70% Stands well and has the rear bracket as the PL-880, however, would be easy to snap if pushed.
Sensitivity: 95% if it is there it will receive it and improve the signal over listening time.

Overall Review Score:
85.3%

Final thoughts:
Go get one, if you must, but better wait for the full export version.

George Joachim
11 AUG 2020


Many thanks, George, for sharing your review of the PL-990!

So far, the PL-990 sounds like it has iterative improvements over the PL-880 which is, I suppose, what I would expect. The PL-880 is a great portable, so I believe even minor performance upgrades–especially in terms of synchronous detection–could be very beneficial to some SWLs.  And thanks for taking the deep-dive and grabbing one of the models on AliExpress! It’ll be interesting to compare notes once the “export” PL-990 is released.

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FTIOM & UBMP, August 16-22

From the Isle of Music, August 16-22:

This week, our special guest is Gastón Allen, director of Orquesta Hermanos Avilés, which was founded in 1882 and is Cuba’s earliest band that still performs today.  Some fascinating
history and some excellent dance music.
The broadcasts take place:
1. For Eastern Europe but audible well beyond the target area in most of the Eastern Hemisphere (including parts of East Asia and Oceania) with 100Kw, Sunday 1500-1600 UTC on SpaceLine, 9400 KHz, from Sofia, Bulgaria (1800-1900 MSK)
If you don’t have a shortwave radio or are out of range, you can listen live to an uplink from a listening radio in the Netherlands during the broadcast at
http://websdr.ewi.utwente.nl:8901/?tune=9400am
2. For the Americas and parts of Europe, Tuesday 0000-0100 on WBCQ, 7490 kHz from Monticello, ME, USA (Monday 8-9PM EDT in the US).
If you don’t have a shortwave or are out of range, you can listen to a live stream from the WBCQ website here (choose 7490): http://www.wbcq.com/?page_id=7
3 & 4. For Europe and sometimes beyond, Tuesday 1900-2000 UTC and Saturday 1200-1300 UTC on Channel 292, 6070 kHz from Rohrbach, Germany.
If you don’t have a shortwave radio or are out of range, you can listen live to uplinks from various websdrs in Europe.
5. NEW:  For Europe and possibly beyond, Friday 1600-1700 UTC on Channel 292, 9670 kHz from Rohrbach, Germany. If you don’t have a shortwave radio or are out of range, you can listen live to uplinks from various websdrs in Europe.
Our Facebook page is https://www.facebook.com/fromtheisleofmusic/
Our V-Kontakte page is  https://vk.com/fromtheisleofmusic
Our Patreon page is https://www.patreon.com/tilford

Uncle Bill’s Melting Pot, August 16, 18 and 21:
Episode 178 features several styles of music from Uruguay.
The transmissions take place:
1.Sundays 2200-2300 (6:00PM -7:00PM EDT) on WBCQ The Planet 7490 kHz from the US to the Americas and parts of Europe
If you don’t have a shortwave or are out of range, you can listen to a live stream from the WBCQ website here (choose 7490): http://www.wbcq.com/?page_id=7
2. Tuesdays 2000-2100 UTC on Channel 292, 6070 kHz from Rohrbach, Germany for Europe.
If you don’t have a shortwave radio or are out of range, you can listen live to an uplink from different web SDRs in Europe
including a live uplink from a listening radio in the Netherlands at http://websdr.ewi.utwente.nl:8901/?tune=6070am
3.  NEW: Fridays 1700-1800 UTC on Channel 292, 9670 kHz from Rohrbach, Germany for Europe and beyond.
If you don’t have a shortwave radio or are out of range, you can listen live to an uplink from different web SDRs in Europe
including a live uplink from a listening radio in the Netherlands at http://websdr.ewi.utwente.nl:8901/?tune=9670am
Our Facebook page is https://www.facebook.com/UncleBillsMeltingPot/
Our V-Kontakte page is  https://vk.com/fromtheisleofmusic
Our Patreon page is https://www.patreon.com/tilford
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Major SWLing Post server upgrades and possible down time

Our amazing web host, Innoscale, will be performing a major upgrade to the SWLing Post server sometime between 5:00-9:00 UTC on Wednesday, August 12, 2020.

The site could be offline for a full hour during this time. There could even be some quirky behavior after the upgrade as we sort out any database and PHP upgrade nuances, etc.

Innoscale

It’s funny: sometimes those companies I rely on the most, steadily do their job in the background and I only think about them when something goes wrong or when I need their assistance.

Web hosts are that way. If everything is going well, they’re almost invisible.

I’ve hosted the SWLing Post with Innoscale for many years now (and with their predecessor since 2009)–I must say that they are an incredible company. They have 24/7 customer support from real people–in fact, always the same team of people so they actually know who we are.

These days, we receive around 7,000 or so daily pageviews on average, but that number can spike to well over 15,000 some days. Our Innoscale cloud server has never slowed down or failed us during traffic spikes. The server isn’t low-cost by any means, but it’s more affordable than a dedicated server and just as speedy.  Thanks to our sponsors, Patreons and Coffee Fund contributors I’m able to make sure our site is speedy, virus-free, secure, and backed-up constantly. I also know there’s a team of people at Innoscale to help out when there’s a problem or, like now, when we do an upgrade.

If your company or business is looking for a robust people-powered host, I can recommend Innoscale without hesitation. Click here to check out their website.

And, again, thanks for your patience while we perform our upgrades tomorrow morning!

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Radio Waves: GatesAir Invests in Equatorial Guinea, Community Radio Champion Lorenzo Wilson Milam SK, and GQRP Online Convention

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 Tracy Wood, John Figliozzi, Heath Hall and Gérard Koopal for the following tips:


Investment project by North American company GatesAir in digitalisation of Equatorial Guinea (Equatorial Guinea Press and Information Office)

The company GatesAir could invest in a digitalisation project for audiovisual media in Equatorial Guinea in the near future. The information was revealed at the audience that the Vice-President of the Republic, H. E. Teodoro Nguema Obiang Mangue, granted on Friday 7th August, at the People’s palace in Malabo, to the accredited North American Ambassador to Equatorial Guinea, Susan Stevenson.

The willingness of the United States Government was expressed at a bilateral meeting that the Vice-President held with the Ambassador, Susan Stevenson, who came to report to H. E. Teodoro Nguema Obiang Mangue about the interest of the North American company GatesAir in investing in a digitalisation project in the country.

The initiative was well received by Nguema Obiang Mangue, who declared to his interlocutor that Equatorial Guinea has its doors open to any foreign investment.

The Coronavirus pandemic which is currently affecting the whole world also occupied a page on the menu of discussions between Nguema Obiang Mangue and Susan Stevenson.

In addition to this project, Equatorial Guinea and the United States continue to form closer ties in other sectors such as Defence, Education, the Economy and Culture, among others.[]

Lorenzo Wilson Milam, Guru of Community Radio, Is Dead at 86 (NY times)

He helped start noncommercial stations in the 1960s and ’70s, offering an eclectic mix of music and talk. His goal: to change the world.

Lorenzo Wilson Milam, who devoted much of his life to building noncommercial radio stations with eclectic fusions of music, talk and public affairs, died on July 19 at his home in Puerto Escondido, Mexico. He was 86.

[…]Mr. Milam loathed commercial radio stations, which he saw as purveyors of mindless junk. With KRAB and about a dozen other stations that he helped start in the 1960s and ’70s, he created a freewheeling, esoteric vision of commercial-free community radio as the voice of the people it served.

He wanted his stations to have inexperienced contributors, both on and off the air. He encouraged locals to help him program the stations and contribute a few dollars to keep these shoestring operations open.[]

RAE 100 year anniversary specials (Gérard Koopal)

I heard on RAE German that Argentina celebrates 100 years radio in Argentina on august 27th of this year.

This was announced by Rayén Braun the 4th of august on her broadcast show in German.

German listeners are asked to send in a personal message as video or mp3 to this event which will be incorporated in the special broadcast show on this matter.

She points out that more information will be found on the website of RAE. (www.rae.com.ar)

GQRP Club releases agenda for its Online Convention 2020 (Southgate ARC)

The GQRP Club has released a detailed agenda for its Online Convention 2020, taking place on Saturday 5th and Sunday 6th September.

The online event, which replaces the club’s annual GQRP convention at Telford due to current Covid-19 restrictions, is open to existing members. There is a special rate for non-members which will include GQRP Club membership until January 2022.

The two-day event comprises a series of online presentations and knowledge-sharing meetings where people can share ideas.

The packed presentation list includes:

• “Building QRP transceivers” with Hans Summers G0UPL, designer and manufacturer of the QCX QRP transceiver.

• “HF propagation and QRP” with Steve Nichols G0KYA, author and chairman of the RSGB’s Propagation Studies Committee

• “Homebrew SSB Transceivers” with Pete Juliano N6QW, co-presenter of the Soldersmoke podcast and a prolific home brewer.

• “Vector Network analysers explained and the NanoVNA” with Alan Wolke W2AEW, a professional electrical engineer who works for Tektronix.

• “Antennas for QRP” with Callum McCormick M0MCX, YouTube star and inventor and manufacturer of the DX Commander vertical antenna.

• “FT8/FT4 for the QRPer” with Anthony Luscre K8ZT, who will take a detailed look at this the fastest-growing mode in amateur radio.

There will also be range of knowledge-sharing sessions, including “Using Antenna analysers” with Heather M0HMO, “Running a QRP DxPedition” with Dom M1KTA, “Battery technology for QRP portable” with Bill G4ERV, “Omni Directional antennas” with John G8SEQ and many more.

The event costs £4 for GQRP club members. Non-members can also sign up for the event and join the GQRP club for just £10 (or £17 for international participants).

To sign up for the event just go to the Eventbrite sign-up page at: https://www.eventbrite.co.uk/e/gqrp-club-2020-online-convention-tickets-115417887007

For more information and to view the full event schedule see http://www.gqrp.com/convention.htm


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