Category Archives: QRPer Notes

Because I receive so many tips from readers here on QRPer, I wanted way to share them in a concise newsletter format. To that end, welcome to QRPer Notes, a collection of links to interesting stories and tips making waves in the world of radio!

sBitx Prototype

Many thanks to Pete (WB9FLW) who sends a link to this article on It’s Ham Radio:

Ashhar Farhan VU2ESE demonstrated Hfsignals upcoming SDR transceiver – sBitx today at Lamakaan Amateur Radio Meet.

VU2ESE was working on this SDR Prototype for some time now. sBitx is the latest iteration of the popular homebrewer transceiver Bitx series started a couple of years by Farhan.

Keynotes

1. Raspberry Pi instead of Arduino – No more Arduino Code, sBitx code is written from the scratch for Raspberry Pi.
2. Power Output: 40 Watt ~ 20 Meters, 15 Meters ~ 25 Watts, 10 Meters ~ 10 Watts
3. Ditched IRF 510 for IRF Z24N for Finals
4. $250 for global buyers. Indian buyers would have to wait for now.
5. Display: 7″ Raspberry Pi Stock Display
6. Easy Digital Modes – FT8, RTTY, Free DV etc. No extra wiring is required.
7. Simple Integration with existing Linux Desktop or Remote Login via SSH or VNC

Here’s the Github for sBitx: https://github.com/afarhan/sbitx

Click here to continue reading full article.

New control software for IC-705 and IC-R8600

Many thanks to Markku (VA3MK) who writes:

Icom has released new Control software for IC-705 and IC-R8600 and it is available on their Icom Japan website now.

Jim Stafford, W4QO SK

This week, we learned that Jim (W4QO)–a noted fellow in our QRP world–passed away.

Jeff Davis (KE9V) wrote a wonderful tribute on his blog. Jeff writes:

Jim Stafford, W4QO became a Silent Key yesterday. That news wasn’t unexpected, I had been closely following the North Georgia QRP mailing list these last few weeks dreading the announcement that arrived yesterday morning.

I had known Jim for more than 20 years. We first met in the late 90’s during a Four Days in May event back when the conference took place at the old hotel south of Dayton. I think we hit it off because we both were native Hoosiers, but his infectious enthusiasm for the hobby made everyone want to be around him.

He became my guide into the world of low-power radio and over the following years we regularly renewed our friendship on the air, via email, and in person almost every year during FDIM at Dayton. [Continue reading on Jeff’s blog…]

News, Portable, QRP, QRPer Notes, QRPers

QRPer Notes: NG2E activates 7 summits in one day, K4OGO discovers QRP in Hawaii, New Icom Software, and TX-500 Firmware Update

December 18, 2021 Thomas Witherspoon 3 Comments

NG2E activates 7 summits on one December day

Many thanks to Jack (NG2E) who shares this Storymap post outlining his effort to activate seven summits in one day.

Jack notes:

[…]My plan was to activate four primary peaks along the Skyline Drive. I then planned to skip over two peaks–Stony Man and Hawksbill Mtn–as I’ve previously activated these peaks. Once activating Hazeltop Mtn farther to the south, I planned to backtrack and pick up the bonus points only for Hawksbill and Stony Mtn if I had enough time and energy.[…]

Click here to view his activation map and narrative on Storymaps.

5 Watts SSB on the Beach in Kauai, Hawaii (K4OGO)

Many thanks to Tommy (N4KBM) who shares this video of K4OGO making his first QRP SSB contact on a beach in Hawaii:

Icom IC-705 Firmware upgrade

Many thanks to Markku Koskinen who writes:

New software available from Icom.

ST-4003W | Firmware / Software | Support | Icom Inc. (icomjapan.com)

The ST-4003W is Windows software, which allows you to set the radio’s time from your PC’s time by connecting the radio to the PC.

Compatible radios (as of November 2021)
IC-705
IC-7100
IC-7300
IC-7600
IC-7610
IC-7850/IC-7851
IC-9700

Use a USB cable to connect the radio to your PC.

The USB port type differs depending on the radio, so please check the radio’s port type before preparing the cable.

Before downloading this software, please thoroughly read the “ST-4003W INSTRUCTIONS” for installation details and what is required for the installation.

New Discovery TX-500 Firmware Update

Lab599 notes via Twitter:

New firmware version available v1.12.00

1. Improved AGC algorithm
2. Added beacon mode activity indicator
3. Added reference frequency correction (TCXO adjustment)

You can download it from here.

News, QRPer Notes

QRPer Notes: Paul’s Page of Radio Groups, Seven Transistor SSB Transceiver, Xiegu X6100 Update, and Hamvention 2022

November 22, 2021 Thomas Witherspoon 2 Comments

Because I receive so many tips from readers here on QRPer, I wanted way to share them in a concise newsletter format. To that end welcome to QRPer Notes, a collection of links to interesting stories and tips making waves in the world of radio!

Paul’s Page of Ham Radio Groups

Many thanks to Paul (W4/VP9KF) who shares this list of popular ham radio groups. He updates these regularly and the page even dynamically monitors the number of members in each group:

http://www.g4bki.com/groups.htm

Paul’s website is chock full of info, so grab a cuppa’ and start exploring!

Novel SSB transceiver design with only seven transistors (Southgate ARC)

Ryan Flowers W7RLF writes on Hackaday about a simple 7 transistor QRP SSB transceiver

When Pete Juliano N6QW sat down to design a sideband transceiver for the 20 Meter (14 MHz) ham radio band, he eschewed the popular circuits that make up so many designs. He forged ahead, building a novel design that he calls Pete’s Simple Seven SSB Transceiver, or PSSST for short.

What makes the PSSST so simple is not only its construction, but the low component count. The same circuit using four 2N2222A’s is used on both transmit and receive.

Read the full Hackaday post at
https://hackaday.com/2021/11/20/pssst-heres-a-novel-ssb-radio-design-with-only-seven-transistors/

Xiegu X6100 Update via Radioddity

Several QRPer readers have reached out noting that Radioddity is now taking orders for the second production run of the Xiegu X6100–they’ve already sold the first batch. Radioddity hopes to ship the first batch soon and the second batch before the end of 2021.

They’re currently running a Black Friday promotion which includes the X6100.

I haven’t heard from other Xiegu distributors yet, but it sounds like early adopters will be getting their units before the end of the year.

I will receive a loaner unit to evaluate and take to the field hopefully within the next few weeks and several readers have orders in the first production run. Scott (KN3A) will be sharing his early experience with the X6100 as well.

Dayton Hamvention is a ‘Go’ (Southgate ARC)

Dayton Hamvention 2022 is not just going to be a premier hamfest but a reunion, as organizers prepare for the first gathering at the Xenia Fairground and Expo Center in Ohio after two years of cancellations.

Hamvention’s general chairman Rick Allnut WS8G said in a phone interview that committees have been meeting and volunteers are committed to making up for the time lost to pandemic cancellations.

Hamvention will be happening on Friday May 20th through Sunday May 22nd with an international reception scheduled on Thursday May 19th. Rick said the registration site is already taking bookings from vendors and inside exhibitors and individual visitors can already buy their tickets. All details are available on the hamvention.org website.

RIck said: “Tickets are all printed and ready to go.”

https://hamvention.org/

Morse Code, News, Portable, QRPer Notes

QRPer Notes: South Asian Amateur News Blog, Keying with the IC-705 Mic, and KX2/3 Capacitive Key Clearance

November 16, 2021 Thomas Witherspoon 17 Comments

VU3HZW’s News blog primarily for South Asian Amateurs

Many thanks to Saquib (VU3HZW) who writes:

Hello Thomas,

My name is Saquib VU3HZW from North Eastern India. Your blog is a trove of knowledge for any QRP operator. Your style of writing is awesome!

Now, here’s the story. I’ve started a Amateur Radio News & Blog – itshamradio.com. As a QRPer, you must be familiar with VU3SUA (Sunil Lakhani) from https://amateurradiokits.in.

We would be pleased if you [and your readers] could read some of the articles and give us some valuable feedback. This is just an honest attempt by us to create a vibrant amateur radio news blog primarily for South Asian Amateurs.

Click here to visit ItsHamRadio.com.

Good luck with the new site and thank you for sharing it with us, Saquib!

IC-705 Mic A/B button CW Keyer Challenge

Many thanks to Keith (GW4OKT) who points out that the Icom IC-705’s A/B buttons can be set up to send dits and dashes. It doesn’t allow for proper iambic keying and, as Keith admitted, isn’t terribly easy in practice. Nevertheless, he gave it a go and provided these short videos operating the IC-705 at 20WPM CW: