In the log this week
* Xiegu Announces Price of G7250 SDR and Begins Pre-Sales
* Contest Spotlight: CQ World Wide RTTY Contest
* Special Event Spotlight: Masonic Lodges on the Air
* ARDC Accepting Volunteer Applications for 2027
* MVARC Nets on the Air
* What’s happening with DX?
* Solar Activity Update
* Upcoming Contests
* Interesting Online Radio Content
As always, links to all referenced content can be found in the show notes, or at our Substack at mvarc.substack.com.
Thanks for reading Amateur Radio News and Notes. Subscribe for free to receive new posts and support my work.
Xiegu Announces Price of G7250 SDR and Begins Pre-Sales
Image Courtesy Radioddity
After the initial teaser in July, Radioddity has started pre-sales and announced a price for the Xiegu G7250 SDR. The radio is selling for $999 US with delivery expected in November to December depending on the shipping method chosen. The rig is a 100 Watt Direct Sampling Software Defined Radio with 90 Watts on the 6 meter band. It also has a 7 inch touchscreen and physical buttons on a control head that is split from the main RF unit. It also has a 3:1 internal ATU and inbuilt sound card for digital modes. There have been a handful of reviewers online who have started to receive pre-production versions, so expect more information to be forthcoming. For more information visit https://www.radioddity.com/products/xiegu-g7250.
Contest Spotlight: CQ World Wide RTTY Contest
Image Courtesy https://cqwwrtty.com/
This weekend brings the CQ World Wide RTTY DX Contest, one of the largest RTTY contests of the year. The organizers expect 15,000 participants and over 3,600 log submissions this year. The fun starts on Saturday, September 26, 2026 at 0000 UTC (8 PM Eastern Time on Friday Night) and continues until 2359 UTC Sunday (7:59 PM Eastern Time on Sunday Night). The stated objective is to contact as many amateurs in as many CQ zones, countries, and US/Canadian QTHs as possible. There are only 5 bands in the RTTY contest including 80, 40, 20, 15, and 10 meters. The contest exchange is an RST plus CQ Zone, so for East Coast stations it would be “599 05” and US and Canadian stations can also send their QTH (e.g. “599 05 VA”). QSO Points are 3 for contacts on different continents, 2 for the same continent but different country, and 1 point for stations in the same country. Multipliers are CQ Zones, Countries, and U.S. States and Provinces. Total Score is QSO Points multiplied by the sum of Zone, Country, and QTH Multipliers.
Operating categories include Single Operator and Single Operator Assisted at the High Power (1500 Watts or less), Low Power (100 Watts or Less) and QRP (5 Watts or Less) for all bands or single bands. For Multi-operator categories there are Multi-Single with only one transmitted signal at High or Low Power, Multi-Two with a maximum of two signals at High Power only, Multi-Multi with all 5 bands being able to be activated simultaneously at High Power only, and Multi-distributed for up to 5 transmitted signals one per band from different locations at High Power only. There are also overlays for single ops for Classic operator with no spotting assistance with 24 total hours operated with 60 minute minimum off times, Rookie for ops licensed within the last 3 years, and Youth for ops 25 years age or younger. The full rules can be found at https://cqwwrtty.com/rules.htm. Logs must be submitted within 48 hours of the end of the contest. Full information about the contest can be found at https://cqwwrtty.com/. Good luck.
Special Event Spotlight: Masonic Lodges on the Air
Image Courtesy https://cqmorelight.com/
This Saturday brings the 5th edition of Masonic Lodges on the Air. Started in 2021, the objective of the event is to contact as many Masonic Lodges as possible during the contest period. The fun starts at 1400 UTC (10 AM Eastern Time) on Saturday and continues until 2200 UTC (6 PM Eastern Time) for a total duration of 8 hours. The entry categories are Single Operator, Multi-Operator Single-Transmitter, and Multi-Operator Multi-Transmitter. In all cases one call sign should be used. The exchange for those operating from a Masonic Lodge is call sign, lodge name, Number, and Jurisdiction (e.g. “K4US Mount Vernon 219 Virginia”). For stations not at a Masonic lodge the exchange would be call sign and state or province (e.g. “N2EC Virginia”). DX stations send DX for the location. QSO Points are 1 for each non-duplicate contact and multipliers are the number of Lodges worked (1 per Lodge, regardless of band). Final score is the QSO Points multiplied by the sum of Multipliers.
The Mount Vernon Amateur Radio Club will be operating once again this year from Mount Vernon Lodge No. 219 as K4US, so look for us on the air. For more information visit https://cqmorelight.com/. Good luck.
ARDC Accepting Volunteer Applications for 2027
Image Courtesy ARDC
Amateur Radio Digital Communications (ARDC) is a foundation whose mission is to “support, promote, and enhance digital communication and broader communication science and technology, to promote amateur radio, scientific research, experimentation, education, development, open access, and innovation in information and communication technology”. ARDC has significant resources from its endowment generated by the sale of 25% of the 44 net IP address space and uses those funds to provide grants to further its mission. To that end, the ARDC is seeking volunteers to participate in reviewing grant applications, advise on technical matters, communicate with the public, and provide internal oversight. Applications are open from September 15, 2026 until October 30, 2026 and are open to amateur radio licensees or those with technical degrees or experience in digital communication. ARDC has been making a significant impact in advancing and supporting the amateur radio hobby, so consider volunteering with ARDC. For more information visit https://www.ardc.net/volunteer-with-ardc-in-2027/.
MVARC Nets on the Air
* 2 Meter FM Net: Tuesdays at 7 PM [146.655/- MHz (141.3 Hz PL Tone) ]
* 2 Meter Digital Net: Immediately Follows 2 Meter FM Net [146.655/- MHz C4FM]
* MVARC Slow Speed CW Roundtable: Saturday and Sunday at 7:30 AM [3.565 MHz CW]
* MVARC Cherry Tree Net: Saturday and Sunday at 8:30 AM [3.920 MHz LSB]
What’s Happening with DX
There will be a lot of DX on the air this week. Stations on the air include Namibia (V51WH), Saint Kitts and Nevis (V47YA, V47RCX), Curacao (PJ2/K5SL), Malawi (7Q5C), Reunion (FR/F1TEQ), Cape Verde (D4SAL), Maldives (8Q7JH), Samoa (5W0AF), Bermuda (VP9I), Naoero (C21DA), Greenland (OX3LX), Ogasawara (JD1BON, JD1BOK, JE1NVD/JD1, JI1CRM/JD1), Mariana Islands (KH0/JR1FKR), Kyrgyzstan (EX9A), Mexico (4A5E), Philippines (DV1IIW), Guam (AH2R), Mayotte (FH/F1TEQ), Democratic Republic of Congo (9T0MD), Micronesia (V61GSE), Juan Fernandez Island (XR0Z), and Gambia (C5R).
A calendar of DXpeditions can be found at NG3K’s Announced DX Operations List at https://www.ng3k.com/misc/adxo.html.
Solar Activity Update
As we go to press the Solar Flux Index (SFI) was 112 and the estimated sunspot number was 124 with 8 numbered sunspot regions visible from Earth. Over the last week the SFI has increased. Solar activity has been at low levels in the last 24 hours. The geomagnetic field has been at quiet to active levels in the last 24 hours and the Kp index reached 4 yesterday. The solar wind peaked at 437 km/s. Solar activity is predicted to be at low levels with a slight chance of M-class flares today through Sunday. The geomagnetic field is forecast to be at quiet to active levels today and Saturday and at at quiet to unsettled levels on Sunday. The chance of solar radiation storms at the S1 or greater level is at 1% today through Sunday. R1 to R2 radio blackouts are possible with a predicted probability of 20% today through Sunday. R3 or greater blackouts are unlikely with a 1% chance predicted today through Sunday. It remains a fantastic time for amateurs to get on the air and work the world.
Good sources of real-time solar information include https://www.spaceweatherlive.com/ and https://solarham.com/. A good overview of conditions can be found at https://dx.qsl.net/propagation/. To see D-layer absorption data and associated radio blackouts, visit https://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap. To see real-time Maximum Usable Frequency (MUF) and Critical Frequency (foF2) information from radiosonde data, visit https://prop.kc2g.com/.
Upcoming Contests
This weekend brings both the CQ World Wide RTTY DX Contest and Masonic Lodges on the Air we spotlighted earlier along with the Bill Windle QSO Party, the YU DX Contest, the Maine QSO Party, the AGCW VHF/UHF Contest, the AWA Amplitude Modulation QSO Party, and the UBA ON Contest on 6 meters. As always the K1USN SSTs, the MSTs, and the CWTs will also be on the air.
The full contest calendar with events and exchanges can be found at https://www.contestcalendar.com/weeklycont.php.
Interesting Online Radio Content
Steve KM9G tries to hack the new Xiegu G7250 to see what can be accessed within - https://www.youtube.com/watch?v=nbSmkJ_sp7Q
Walt K4OGO talks about getting his Australian license VK4OGO and compares the licensing process - https://www.youtube.com/watch?v=jKfrTyTBPR4
Rob N1NUG participates in the statewide activation of Rhode Island for Parks on the Air - https://www.youtube.com/watch?v=Empb0Z17T-c
Peter VK3YE builds a Vanyusha regenerative receiver on a soup can - https://www.youtube.com/watch?v=KI7dvHxw2cE
Vince VE6LK does a 2 meter CW contact across the Canada/US border to join the Brass Knuckle Gang - https://www.youtube.com/watch?v=DDDPQb5FmkM
Callum M0MCX shows his new Radio Commander electronic glass cockpit for radios - https://www.youtube.com/watch?v=2Ebm7Z3Qqxs
James M0GQC does a SOTA activation with a kite raised antenna in Wales - https://www.youtube.com/watch?v=IwvlCSUjvyw
Ciprian YO6DXE continues his series with the BBB-4 Natural Receiver refining the audio output to hear sferics - https://www.youtube.com/watch?v=d3jtn3422Ak
Jason KM4ACK demos an offset attenuator for radio direction finding (foxhunting) - https://www.youtube.com/watch?v=_vUbHtlUBwI
Mike K8MRD shows us the new POTA web site and likes what he sees - https://www.youtube.com/watch?v=D29yBtFrvKU
Brett from SurvivalComms compares field VHF antenna designs - https://www.youtube.com/watch?v=W7WQjDXeaNk
Kevin W1DED talks to Braco E77DX and Sven DJ4MX about their WRTC disqualification - https://www.youtube.com/watch?v=Y_1q8lqH4kI
Vlad YO6RV modifies the popular red base vertical from AliExpress to fix an issue with the threads - https://www.youtube.com/watch?v=0lMiD0SECYM
Mike K8MRD builds a 2 meter Jungle Antenna - https://www.youtube.com/watch?v=dx9M23_43js
Bob WV7W takes a look at an HT capable of operating inexpensively on the 1.25 meter band - https://www.youtube.com/watch?v=tK0bIVLL9Es
Walt K4OGO builds a 2 element vertical for DX gain - https://www.youtube.com/watch?v=ooni0pvw4Qc
Steve KM9G unboxes the Xiegu G7250 - https://www.youtube.com/watch?v=odY8CegL8UI
Forrest KI7QCF shows a new no-modification required way to get a Quansheng HT on 2 meter CW - https://www.youtube.com/watch?v=qwPvv8Vp9-Q
Richard MW0LGE shows how to configure Thetis for keying with N1MM - https://www.youtube.com/watch?v=JZl7g_I2m2Q
IMSAI Guy looks at a portable 50 MHz Oscilloscope and Multimeter - https://www.youtube.com/watch?v=ID8hYSfue5c
Josh KI6NAZ does part 2 of his CFT-1 transceiver build - https://www.youtube.com/watch?v=_ktL_qQAwbU
Mellow Labs looks at a 100 Watt soldering station with an internal battery - https://www.youtube.com/watch?v=s0CdMjh5K_o
Kevin W1DED gets a European perspective on the WRTC disqualifications with the European Contest Crew - https://www.youtube.com/watch?v=rGb2an31KFs
Kevin KB9RLW does a review of a portable spectrum analyzer from Rigol - https://www.youtube.com/watch?v=N6g9ZIjXvJ0
Sean W9FFF talks about a virus that was discovered on the Elecrow ThinkNode M9 Meshtastic/Meshcore transceivers - https://www.youtube.com/watch?v=zfSxwUEMIu0
Craig KM6LYW gives a talk about Project Mercury, an OFDM alternative to VARA - https://www.youtube.com/watch?v=M6rwIhG9ZMY
Mike K8MRD looks at the new cross platform Ham2k Power Logger - https://www.youtube.com/watch?v=cngSmsKLkHg
That’s it for this week.
Best 73,
Ed
N2EC
This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit mvarc.substack.com