(Note: This is a cross-post from my other radio blog, the SWLing Post.)
So the ALT-512 QRP SDR transceiver has landed at SWLing Post HQ. This little rig is on loan from Aerial-51 and I’ll be spending the next month or so putting it through the paces.
I can already tell that the ALT-512 has some strong points:
It’s incredibly portable and easy to take to the field, providing you have a battery and resonant antenna (or external ATU).
The color backlit display is quite readable at any angle despite being rather information-dense.
I really like the waterfall display. It’s large enough to be quite useful.
The ALT-512 can connect directly to your computer for digital modes like FT-8. No external sound card needed.
The menu system contains a wide array of features and options for granular tweaks and modifications.
The ALT-512 includes the European 4 meter band.
Although I prefer using headphones with small radios, the ALT-512’s small internal speaker does a fine job.
Rob Sherwood tested the ALT-512 (indeed, this very unit) recently and added it to his receiver test data. It performed quite well especially considering the price.
Any negatives so far? Nothing major:
No internal ATU or battery options. At this price point (799 EUR), I wouldn’t expect either of these.
The ALT-512 is not general coverage. This is a negative for those of us who like SWLing, but a positive for ham radio use as the ALT-512 sports band-specific bandpass filters to reject out-of-band strong stations. You can tune to some stations above the 40M band and also the full mediumwave band and below (down to 100 kHz), although I wouldn’t expect stellar performance in those regions.
So far, I’m very pleased with the ALT-512’s performance.
Next, I’ll be taking it to the field and see how easily I can activate a few POTA (Parks On The Air) sites! Stay tuned!
Note: this is a cross-post from our other radio blog, the SWLing Post.
This weekend at Tokyo’s Ham Fair 2019, Icom announced an innovative transceiver to their line-up: the Icom IC-705 QRP transceiver.
The IC-705 introduces several industry firsts for a backpack portable radio:
It uses the same BP-272 Li-ion Battery pack as the ID-51 and ID-31 series D-Star handy talkies. To my knowledge, this is the only HF transceiver that uses battery packs that can be swapped so easily in the field–like one would swap an HT battery pack
It has a general coverage receiver that spans a whopping 0.5 to 148 MHz
It sports a full color, touch screen with spectrum and waterfall displays
It includes the D-Star digital voice mode
A GPS receiver
Bluetooth connectivity
A MicroSD card slot for memory storage, screen captures and recordings
All of this appears to be included, not add-on options.
The only IC-705 omission, in my opinion, is an internal ATU (antenna tuner). Something I would have expected, but not a deal-breaker for those of us who could really benefit from the amount of features this radio offers.
Side and back panel view noting ports and connections.
There is no word yet on pricing or availability, but you can count on us to post these details once they’re available. If you would like to follow updates, bookmark the tag: IC-705
We will also review on the Icom IC-705 as soon as it’s available.
Video from Amateur Logic/Ham College
Ray Novak (N9JA) with Icom America did a live video interview with Amateur Logic/Ham College TV yesterday. The video includes a full announcement in English from the Icom Booth:
The “Big Three” transceiver manufactures–Icom, Yaesu and Kenwood–have not shown a lot of interest in backpackable QRP radios over the past two decades.
By “backpackable” I mean QRP transceivers specifically designed for portable use in the field–radios that typically have built-in battery options, internal ATUs, and designed to be lightweight shack-in-a-box units.
Yaesu introduced the FT-817 almost twenty years ago and it lives on today (with modest upgrades) as the FT-818. Kenwood has no portable/backpackable HF QRP radio at this point.
I bet the IC-705 is being introduced today because Icom sees a strong market among field-portable operators who enjoy travel and outdoor radio activities like SOTA (Summits On The Air) and POTA (Parks On The Air). In addition, many ham radio operators live in neighborhoods that are either plagued with radio interference (RFI) or don’t allow antennas to be installed outdoors. Portable radios liberate ham radio ops from their shacks and allow them to set up a station far away from noise or home owner’s associations.
Looking forward…
Again, I’ll be in touch with Icom about the IC-705 and will share updates here when they’re available. I’m looking forward to evaluation this rig when it hits the market!
Please note: This is a cross-post from our other radio site, the SWLing Post.
Many thanks to SWLing Post contributor, Vlad, who shares some images and a video of a new QRP transceiver in development: the Discovery TX-500 by a company called lab599.
Specifications have not been published yet, but we have confirmed a few details from the manufacturer:
10 watts PEP
HF plus 6 meters
Weight 570 grams (1.25 pounds)
Voltage 9 – 14 VDC
105 milliamps at 13.8 VDC and with backlit display on
CAT control via USB and using Kenwood codes
I/Q outputs
Weatherized
Expected availability autumn 2019
Target retail price is $700 US
Product website is forthcoming
All of the following images came from the Discovery TX-500 gallery on Instagram:
For someone, like me, who loves playing radio in the field (Parks On The Air and Summits On The Air) this looks like an ideal rig. It’s one of the only ham radio transceivers I’ve seen that is weatherized to some degree (how much, we don’t know yet).
I don’t see a speaker on the TX-500, so I’m guessing it might require a mic/speaker combo or an external speaker of some sort? I also don’t see a built-in ATU, but at $700, I certainly wouldn’t expect one.
With a power consumption of 110 milliamps at 13.8 VDC, this little transceiver should run for ages on a modest battery pack.
This is certainly a fascinating prototype QRP transceiver. If the Discovery TX-500 transceiver can be produced and marketed at $700 with all of the features mentioned so far, it should certainly fly off the shelves. They can certainly take my money!
Of course, I will plan to grab one of these for review. I’m also eager to see how this little SDR transceiver might perform on the broadcast bands.
We will post post TX-500 updates and details as they become available. Bookmark the tag Discovery TX-500 and stay tuned!
CommRadio dispatched this loaner CTX-10 for evaluation and I’m excited to get my hands on it since it’s not everyday I get to evaluate a transceiver designed around field portability (my favorite category of gear).
Yesterday, I took a few shots of the CTX-10 as I unpacked it:
I’ll need to build a fused power cable with the supplied pigtail and also sort out an 8 conductor (Yaesu compatible) modular plug microphone. Of course, I’ll give this radio a thorough review testing it on SSB, CW and digital modes (especially FT8).
Since the CTX-10 is built on the CommRadio CR-1 and CR-1A I anticipate a capable receiver section (in other words, expectations are high). Of course, I’ll test the CTX-10’s ability as a broadcast receiver as well.
Many thanks to Pete Eaton (WB9FLW) who shares the following post:
Last March Ashhar Farhan VU2ESE the designer of the very popular BITX20 and BITX40 series of mono-band HF Transceivers announced a new low cost Rig called the uBITX (micro BITX) a full blown 80-10m 10 Watt SSB/CW Transceiver. Now comes word that after many months of very hard development work by Ashhar this much anticipated Rig will soon be available.
For those not familiar with the Project this is *not* a kit, rather like its sibling (the BITX40) it consists of two assembled and tested Circuit Boards. The RF board measures 5.5 x 6 inches and a second small plug in daughter card that takes care of the digital portion of the design including the 2X16 LCD, Arduino Nano, and Si5351 which are used in the VFO. Add a Cabinet, Knobs, and Connectors and you have a full blown HF Rig. An added plus is that except for the Gerber PCB files everything else (including the firmware) is Open Sourced!
Farhan has a social conscience as well giving several local Ladies much needed employment for final assembly and checkout of the Rigs.
There are still a few final tweaks being done to the design so pricing is still to be determined. But if it’s offered at a similar price point as his earlier Transceivers it should sell like Hotcakes!
For the latest info check out the BITX User Group at:
[This post was originally published on my other radio blog, The SWLing Post]
As seen from the Overmountain Victory Trail: The Revolutionary War encampment at the Museum of North Carolina Minerals.
As I mentioned in a previous post, what I love about the National Parks On The Air program is that it combines two of my favorite things: national parks and ham radio. My family visits national parks regularly, so it’s easy for me to pack a small radio, do a quick NPOTA activation all while incorporating non-radio activities that the family loves.
Normally, I would set up my station somewhere close to the Museum of North Carolina Minerals which is situated at the junction of these two National Park entities. Saturday, however, was a special event at the museum: a Revolutionary War Encampment.
The Museum is located at Gillespie Gap, an important stop for Revolutionary War fighters on their way to the Battle of Kings Mountain. Each September the Museum hosts an encampment of re-enactors who assume the role of the Overmountain Men, primarily Scots-Irish settlers from Eastern Tennessee and Western North Carolina who came “over the mountains” and ultimately defeated the left wing of Cornwallis’ army at Kings Mountain, South Carolina. Many historians mark this victory as the turning point in the Southern Campaign of the Revolutionary War.
My family loves living history events.
Radio time!
The Park Ranger kindly gave me permission to do the NPOTA activation, but not at the museum itself. She was trying to keep the site set in the Revolutionary War period–a ham radio operator using a portable transceiver doesn’t exactly fit that description. Instead, around 15:30 UTC, I hiked up the Overmountain Victory Trail in search of an operation site near the Blue Ridge Parkway road.
The trailhead was a little rough and overgrown. I didn’t have to trail-blaze, but I did have to wade through a lot of weeds with my gear and my canine companion, Hazel, on leash. It’s times like this I truly appreciate such a compact, lightweight, and packable station.
Can you find the trail in this photo?
Once we entered the woods, though, the trail improved. I found a fantastic spot to operate between the museum and the parkway.
Hazel the dog is a welcome companion does a wonderful job keeping my site free of black bears. She’s patient, too. I typically tie her leash to a small stake or tree next to me and she promptly takes a nap. Here she is admiring my new REI Camping Stool:
You can see part of the EFT Trail-Friendly antenna hanging in this photo.
Setup was quick. I managed to raise the EFT Trail-Friendly antenna in record time. I connected the antenna to the Elecraft KX2 and was on the air, calling CQ on 20 meters in a matter of minutes. In the space of 15-20 minutes, I only managed to work a few stations on the 20 meter band even though I had been spotted several times on the DX Cluster.
I moved to the 40 meter band and logged contacts quickly, however.
My full station and my ferocious guard dog, Hazel.
Hazel, as I mentioned, is a great companion that’s sweet to everyone she meets. She’s happy to hang with me even if I’m just sitting there operating radio for an hour. She’s quiet and doesn’t bark unless she notices a true disturbance.
Still, Hazel does get bored. After I had logged about 20 stations, I heard her gnawing on something. I turned around and discovered that she found the reel of fishing line I use to hang my antennas.
Note to self: next time pack Hazel a bone.
She didn’t even look apologetic or guilty! Oh well…fishing line is pretty cheap to replace and I’m sure she assumed it was a chew toy I had placed there for her.
All in all, it was a very successful activation. In less than one hour, I put 22 stations in the log. The weather was perfect and the whole family had a blast.
A photo I took prior to watching a reenactment of the Battle of King’s Mountain.
What a wonderful day to play radio, take in our national parks and re-live some of our history!
I should be on the air starting sometime between 20:00-20:30 UTC (4:00 – 4:30 PM EDT). I’ll plan to operate SSB on two frequencies: 14286 and 7286 kHz. I’ll be on the air for one hour or so, if all goes well. Listen for my amateur radio call sign: K4SWL.
If you hear me on the air, please consider submitting a spot to the DX clusters!
It just doesn’t seem possible that I have almost everything I need to make the NPOTA activation today in this pittle pack.
I am planning to activate the Carl Sandburg Home (NS07) for National Parks on the Air today. I should start sometime between UPDATE (17:00-18:00) UTC and operating for about one hour. I’ll be SSB/QRP on 14286 and possibly 7286 kHz (depending on the type of antenna I can deploy). I’m fitting this activation into a busy day, but will do my best to hit the air and work as many stations as possible.
I just finished packing everything for the activation.
This will be the first time taking my Elecraft KX2 to the field. It feels *very* strange not to pack even an external battery. Just the little radio, an antenna, a clipboard, an assortment of adapters and a short run of coax.
Not sure yet if I’ll hang the Par EFT trail-friendly antenna or use my telescoping fiberglass vertical (which performed admirably last week!). This is a sensitive archeological site, so I have to abide by the wishes of the park ranger on duty (though I’ve been given permission to install the vertical near their vegetable garden). I want to hang the EFT so I’ll have two bands (20 and 40) at my disposal.
If you have the time today, please try to work my station!
I am loving the new QRP Ranger power pack–it is the solution I decided on after publishing this post a few weeks ago. It’s a little pricey, but it’s built like a tank, very lightweight, includes a charge controller made specifically for the LiFePo cells, and made here in the USA. It also had a very readable LED display that my buddy Eric says is, “reminiscent of the displays on the Apollo 11 module.” He’s kind of right!
It’s so nice to have both a volmeter and ammeter on the front panel.
We just finished activating the Hopewell Culture National Historical Park (I’m writing this post while Eric drives us to our next activation). I made 12 contacts running SSB at 8 watts. Eric made 16 contacts via CW at 5 watts.
We have planned two more activations this afternoon:
Charles Young Buffalo Soldiers National Monument at 16:30 UTC
Dayton Aviation Herital National Historical Park at 21:00 UTC
I’ll be calling CQ on 14.290 MHz and 7.290 MHz +/-.
Please hop on the air listen and/or answer my call if you’re a ham!
On my way this morning to FDIM and the 2016 Dayton Hamvention.
Since I own the Elecraft KX3, Elecraft K2 and the Elecraft KX1, I’m excited to see that Elecraft has announced a new addition to their product line: the Elecraft KX2. Elecraft will feature the KX2 at Four Days In May (FDIM) and the Dayton Hamvention.
I am attending vendor’s night at FDIM and the full Dayton Hamvention. I will post photos of the KX2 here–follow updates by bookmarking the tag KX2.
Full details from the Elecraft press release, via Southgate ARC, below:
New KX2 radio to be announced this Thursday at the Dayton Hamvention 2016
Hello to all,
We are please to announce a new radio to complement the KX3 and the KX-Line. Here are the details.
What: Elecraft announces the KX2, Ultra-portable radio When: Thursday, May 16th, 1300Z Where: Four Days In May QRP event, part of the Dayton Hamfest activities
Elecraft is excited to announce a new radio targeting the Ultra-portable market with a Fit-In-Your-Pocket size. Please see the attached brochure for details.
Pricing – KX2: $749.00
– Options and accessories: Please see the table below for pricing. Also see the FAQ for details.
Ordering/Availability
Distributors are encouraged to order both the KX2 and accessories now. The KX2 is already in production and early ordering will ensure your position for deliveries.
Note that the KX2 will be available in full, factory-built form only. There will be 2 internally-installed options available immediately. See the FAQ for more details.
Marketing Collateral Available
You will find a new section in the Elecraft Egnyte repository that contains:
– The attached brochure in editable form for you to translate and convert to local printing formats. – A KX2 Date Sheet – A KX2 Frequently Asked Questions (FAQ) in editable form – Hi Resolution images for use with your marketing and web site content
Special Note on the new KX2 Battery and Charger system
– Elecraft will be stocking the KXBT2 (Li-ion Battery) and the KXBC2 (Li-ion Charger) for your to order. – We have also arranged for you to purchase both items directly from our supplier, Tenergy (www.tenergy.com) – Please see the attached document, KX2 Battery info v1.0, with the details.
Along with many of the Elecraft team, I’ll be in Dayton to launch the KX2 but will be able to answer questions as needed.
Again, we are excited to offer you increased business opportunities with the KX2 launch!
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In the space of 15-20 minutes, I only managed to work a few stations on the 20 meter band even though I had been spotted several times on the DX Cluster.
