Dan adds updates to his Malahit SDR and variant reviews

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Many thanks to SWLing Post contributor, Dan Robinson, for the following update to his previous post regard the DSP-2 and HFDY Malahit SDRs:

HFDY clone of the Russian-made Malahit SDR

Malahit and HFDY Updates

by Dan Robinson

HFDY CLONE: As noted by a reader in comments, the Chinese-made HFDY leaves out a large portion of the military AIR band, with no coverage from 250MHz to 400MHz, or about 150MHz, whereas the Russian-made DSP2 only loses 20MHz from 380MHz to 400MHz. This may be of concern for some readers, others not.

RUSSIAN DSP-2: As users of the Russia-made DSP-2 may or may not have noticed, the current firmware shows SIX memory bank pages when there are only 5. This appears not to have been discussed much on the Malahiteam Telegram group or elsewhere. In response on this, Georgiy of Malahiteam says this “is normal and for our future features” so clearly there are future plans that we are not aware of.

CHINESE-MADE FIRE BROTHERS CLONE: On September 21st, I took delivery of another China-manufactured clone, with a heavy metal cabinet, a vertical format with controls on top, and twin front-firing speakers. Obtained via Alibaba, and branded as “Fire Brothers” this has a thick built-in telescopic antenna and a separate SMA jack which the maker describes as “[supporting] a better external shortwave antenna”

On Alibaba, prospective buyers of this receiver are given two options: Type 1: 50KHz-2GHz without firmware updates supported, and Type 2 with support for updates. The unit did arrive with 1.10c Malahit firmware with a 160 kHz bandscope width.

As noted above, this China-manufactured clone also blocks 200 mHz – 400 mHz and shows the Msi001 chip and STM32h743 and a claimed blocking figure of 85dB and sensitivity up to 250MHz of 0.3?V = 10dB. The battery is described as 5000 mAh and presumed to be flat type Lithium Ion.

The only thing included with this clone, which arrives in a plain black box marked “Fire Bros.Radio” is a USB-C cable. That’s in stark contrast with the HFDY clone which comes in a high quality fabric zipper case, flexible whip antenna, USB-C cable, and a small metal stand.

The Fire Brothers manufacturer highlights the “high quality speakers” which not only fire out the front of the receiver, but also wrap around with openings on left and right sides of the radio. My first tests show that audio is indeed quite nice, certainly equal to the Russia-made DSP-2, possibly an improvement on the HFDY clone which has a single front-firing speaker.

I’ll have more on this Chinese clone and some comparisons with the DSP-2, HFDY, and Afedri SDRs, in future articles here on SWLing Post.

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Cities and Memory: “Remix and reimagine the world of shortwave radio”

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I’m absolutely chuffed to announce that the excellent Cities and Memory sound project has partnered with the Shortwave Radio Audio Archive for an all-new take on the soundscape of cities, and YOU are invited to be part of it.

From Cities and Memory:

Open call – remix and reimagine the world of shortwave radio

Shortwave radio is one of the most fascinating sonic worlds – capturing vital moments in world history as well as pirate radio, clandestine stations, secretive number stations and military and spy radio, all of humanity is there to be listened to at the turn of a dial.

We’re delighted to have teamed up with The Shortwave Radio Archive to present 100 incredible recordings from the history of shortwave radio all over the world for artists to remix and reimagine.

Shortwave Transmissions is our latest global project, and we’re calling for sound artists and musicians to get involved by reimagining shortwave radio recordings from across the world.

Here’s how to get involved:

1. Email us to let us know you’re interested – and we’ll send you the database of recordings to choose from.
2. Let us know your top two choices, and we’ll allocate one of those sounds to you to work with.
3. Create your composition – it must contain some elements of the original recording in some form, but otherwise is a completely free composition (music, sound art, radio art, composition, narrative storytelling – everything is valid!).
4. Submit your composition – the final deadline will be Sunday 14 November.

There are some incredibly rich recordings to work with as source material – here is just a sample selection:

- Recordings from the mysterious “numbers stations” around the world
- Coverage of world-changing events such as 9/11, the invasion of Kuwait, Kennedy’s assassination, Tiananmen Square protests, the death of Fidel Castro and many more
- Rare international recordings from St. Helena, Nicaragua, Saudi Arabia, the Falkland Islands and Antarctica
- Recordings covering a huge period of time from 1934 through to the present day
- Space travel documented, including the Sputnik, Apollo and Challenger missions
- Recordings of famous voices such as Winston Churchill and King George V
- Station IDs, interval signals and final broadcasts from radio stations

Compositions will be presented in the Shortwave Transmissions project in late November and to thousands of listeners across the Cities and Memory podcast, and a selection of compositions will be chosen for an accompanying album release.

Sound artists and mixers, jump in to the Archive and see what you can unearth from the depths of our audio. We hope you’ll want to part in what we believe will be one of the most intriguing projects we’ve launched; in partnership with Cities and Memory, there’s no doubt it can be. We look forward to your contributions!

Click here for full details at Cities and Memory.

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FTIOM & UBMP, September 26-October 2

Malahit DSP-2 versus Chinese Clone: Taking the Gloves Off

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Many thanks to SWLing Post contributor, Dan Robinson, for the following guest post:

Malahit 2 versus Chinese Clone: Taking the Gloves Off

New DDC (Direct Digital Conversion) Version in Development

by Dan Robinson

It’s been a few weeks since my last commentary on the Malahit/Malachite, which as of this writing remains at the DSP-2 level, though there are continuing hints from the Malahiteam in Russia about future changes, including a DDC version.

All of the observations I made in previous articles are unchanged. As of today in mid-September, the latest test firmware version posted by the Malahiteam remains M2_FW2_10D. This includes a widening of the waterfall bandwidth from 160 kHz to 192 kHz. See my previous articles for more information.

Recently, I obtained a Chinese clone, one which will be familiar to anyone who has taken a dive into the clone market. This one is by HFDY and is immediately recognizable for its front speaker and longer slim rectangular form factor.

The HFDY (Malahit SDR V 3) has two high quality black metal encoder knobs on the right, with a large power button between, and USB-C and a headphone jack on the left side. On the bottom are two OFF/ON slide switches, one marked for 3.3 volts and the other BOOT(O).

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Radio Waves: Is the Titus II Still Alive, Navajo Broadcasters Make History, Portalo Stranah, and R.I.P. Sir Clive Sinclair

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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 Dennis Dura, Zarpo, Maxime, and the Southgate ARC for the following tips:

Is the Titus II portable Android tablet shortwave SDR close to release? (RTL-SDR)

The PatronX Titus II SDR is something we’ve been posting about several times since 2016, but in the end it was never released and assumed to be vaporware. However, we found that the website for the Titus II SDR was updated only a few weeks ago, and pricing details have been added advertising $120 and $150 for two versions of the product. But on the new website there is no store, just an email link to contact sales for ordering information. We contacted that email two weeks ago for more information but have not received a reply back yet.

The PantronX Titus II was advertised to be a portable Android tablet based SDR that would feature a 100 kHz – 2 GHz tuning range, and software that focuses on HF digital DRM decoding, as well as DAB on VHF. Computer rendered images show the tablet housed in a portable carry enclosure with two speakers. [Continue reading…]

Two Navajo broadcasters make history announcing D1 college football game in Navajo language (KRQE)

ALBUQUERQUE, N.M. (KRQE) – Two men from the Navajo Nation made history at Saturday’s Rio Grande Rivalry game, with a first-of-its-kind radio broadcast in Albuquerque. For the first time ever, two men from the Navajo Nation announced a D-1 college football game in the Navajo Language.

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Mark’s Malahit DSP-2 notes

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Many thanks to SWLing Post contributor, Mark, who recently shared the following comments in response to Dan Robinson’s excellent Malahit DSP-2 review series. Mark writes:

I’ve been playing with my new Malachit for a week now and I am very impressed. It’s got a superb receiver and last night I was pulling in several South American stations using the absolutely amazing Bonito MA305 with the longer whip, not the stock one, it’s around 30 feet up in a tree using H155 coax grounded at the base of the tree, this antenna really blows me away. Some of these stations are only 1Kw and the little Bonito was pulling them in very well indeed. I am in the country so have a very low noise floor and QTH is Ireland.

Yes I do have to turn the RF gain to 0 and use around 20db attenuation on Longwave but I know what I should be receiving here in Ireland on LW and by using attenuation it has no negative effect on LW. I do have a strong enough LW transmitter around 45-50 miles away which is probably having an effect here but if I compare it to my Tecsun PL-990x the Malahit completely obliterated the 990x on LW even with the attenuation on the 990x. Its performance on LW with external antenna is very poor even using one of the hidden features by Press and hold the [ 3 ] key for about 2 seconds, this does make a notable improvement to the 990x on LW and MW but the Malahit completely obliterates it on LW and External antenna. Of course the Malahit has no internal ferrite so without external antenna you won’t receive anything on LW or MW.

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Check out the new scheduler functionality in SDRuno V1.41

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Many thanks to Jon Hudson with SDRplay who shares the following information about the latest release of SDRuno on the SDRplay blog:

Try out the new features in SDRuno V1.41 released today

SDRuno V1.41 was fully released today. It includes the much requested full scheduler facility which allows you to set up numerous recording events for your RSP. As well as providing all the expected calendar options (time of day, date, start and stop times, repeating options and so on), you can also set the ‘profile’ for each recording – this allows you to pre-set frequencies, bandwidths, demodulator options (AM/FM/USB/LSB etc.), choice of filters and antenna port selection. Additionally you can choose the settings for connectivity to other third party software or the running of a specific plugin.

Added
• New Scheduler panel which replaces the old “Recorder” panel (launch using the SCHEDULER button in the main panel).
• A new autolayout to include the scheduler (for screen resolutions of 1920×1080 and above).
• Backup and Restore of the ini file settings (access via the main panel OPT menu)
• Screenshot button has been added to the SP1 title bar
• IQ wav files can now be used in plugins
Changed
• Autolayouts now take account of the taskbar location and size.
• Autolayouts have been improved to take account of higher resolutions.
• Saved workspace notification moved to the status bar.
• Memory Panel will now prompt to save any changes made when switching to another memory
bank.
Fixed
• Decimation and the LOLOCK state are now correctly saved and recalled within a profile.
• Main panel version tooltip now displays correct information.
• The step size could be set incorrectly when using non-FM modes and pressing any of the FM sub
mode buttons.
• ADS-B/DAB mode now handles when in both band-framed mode and also when the LO is locked.
• Bugs associated with wav file playback
• When loading a profile, the last used memory bank field will update correctly
• Saving a profile will now update the displayed loaded profile field correctly
Known Issues
• SP2 CWAFC drift issue (Zoom/window size/freq display)
• IF output mode disabled SP1 spectrum mouse clicks
• Occasionally if SDRuno is closed whilst a plugin is still running, it may not close properly. This may
necessitate a PC reboot to fix it.