QDX

Just would like to put on record how amazing the tiny 20-10m QDX digital transceiver is from QRP Labs. 

It works extremely well on TX and, as I have found out in the last day, works extremely well on RX down to at least 40m. It will probably go even lower! 

If you have no other rig, this tiny transceiver is a real winner. It can be used with WSJT-X on all modes I think. So far, I have used FT8 and WSPR. It is nominally a 5W rig, but my QRP signal is daily copied all over the world.

It is incredible how something this tiny works so very well.

See https://qrp-labs.com/qdx.html .

40m FT8 RX (Friday)

It is intriguing to see how low I can RX on my tiny 20-10m QDX transceiver. At the moment I am on 40m FT8 RX with the earth-electrode "antenna" in the ground, which seems to work better at 40m than my end-fed 10m antenna. It would probably work on TX too but the low pass filter is probably ineffective.

Nothing has appeared on PSKreporter, although I can see many stations locally on my screen. Perhaps there is a delay or a reset is needed?

UPDATE 1310z:  WSJT-X reset. Still no PSKreporter spots on 40m FT8 RX.  Just looked on the "all bands" view and I can see my 40m RX spots - odd.

UPDATE 1401z: 51 stations spotted on 40m FT8 RX on the 20-10m QDX RX with the earth-electrode "antenna" in the ground.

OFCOM updates

Just a reminder that OFCOM updates the information it holds every week. There is also a list of its publications. See the OFCOM website.

Dayton Hamvention - reminder

This is mid-May in Ohio USA. It is one of the biggest amateur radio gatherings in the world. It is often the place where major manufacturers announce new products, even if they are still some way off. I have never been. Let's hope Yaesu do not miss the boat again, or I fear curtains.

See https://hamvention.org/ .

Progress report

 Some weeks ago, these were my aims. Some have been achieved.

Done

• Put Spectran software on the shack PC.
• Been on 80m and 160m with the earth-electrode "antenna".
• Local 481 THz tests.

Not done

• QRSS tests on 136 kHz.
• 481 THz QRSS tests with Spectran.
• Yet to restart 8m tests.

Trinity flowers - NOT amateur radio

These were the flowers on the path to Trinity College, Cambridge earlier this week.  Last year we were too late.

10m QRP FT8 (Friday)

Since 0915z, I have been on 10m QRP FT8 with the QDX transceiver. Poor conditions?  At 0928z, just 2 stations spotted and just one local has spotted me so far.

UPDATE 1208z:  15 stations have spotted my 10m QRP FT8 today.

30m FT8 RX in the last day using the 20-10m QDX

As stated yesterday, my QDX covering 20-10m is used with a 10m end-fed antenna. As an experiment I wanted to try it on 30m FT8 RX. I am amazed. Having been on since last evening only, with a totally non-resonant antenna, 654 stations have been spotted!!

Sunspots - Friday April 28th 2023

Solar flux is 150 and the SSN 136.  A=21 and K=3.  Conditions seem poor.

30m FT8 RX with the 20-10m QDX (Thursday)

My 10m band end-fed antenna is way off tune on 30m. As an experiment, I tried my QDX for 20-10m on 30m FT8 RX this evening.  I have no idea how sensitive it is on 10.136 MHz. So far, 384 stations have been spotted at 2131z. The map shows the stations spotted here by 1935z.