ON3JT » Digital Mode

Avoid uncontrolled transmissions with this simple modification on your radio interface

Joost — Thu, 05 Feb 2009 19:20:50 +0000

Ham radio operators interested digital modes will often use these computer interfaces to automate CW contacts (send morse code from the PC), use the PC soundcard for RTTY and control push-to-talk functions among other things. Many of the PTT interface drawings found on the net suffer the same problem. Well it is not really a problem. Let’s have [...]

Avoid uncontrolled transmissions with this simple modification on your radio interface is a blogpost from: ON3JT

20m band report in WSPR

Joost — Thu, 22 Jan 2009 07:30:41 +0000

A friend of me asked if I could detect some WSPR signals on 20m. He has been monitoring it a while without any activity. I also read the comments of G4ILO on the WSPRnet.org site : http://wsprnet.org/drupal/node/384 I must admit that I was also stuck on 30m. He made a statement and yesterday I had a day off. [...]

20m band report in WSPR is a blogpost from: ON3JT

My WSPR signal reached Australia

Joost — Tue, 16 Dec 2008 21:45:26 +0000

Tonight I used WSPR again to see the activity on 30m. Now I received about 7 stations from the USA, Hungary, Spain, Switzerland, UK and the Czech republic. After a few hours I ticked the 20% T/R option. This switches the transceiver on for 20% of the time and the remaining 80% listening. And yes, my signal [...]

My WSPR signal reached Australia is a blogpost from: ON3JT

My first 30m WSPR experiments with a strange call showing up

Joost — Tue, 16 Dec 2008 18:17:50 +0000

Last saturday night my computer has been running all night long the WSPR (whisper) software from ….. to see if I could receive that mode too. My wife had the night shift in the hospital and could not argue that the computer is making too much noise in the bedroom That is the [...]

My first 30m WSPR experiments with a strange call showing up is a blogpost from: ON3JT

Digital Radio Mondiale reception with a simple setup

Joost — Thu, 13 Nov 2008 21:10:02 +0000

After reading this site : http://paginas.terra.com.br/lazer/py4zbz/hamdream/rxdrm.htm I modified my Icom IC725 with a similar capacitor. It worked more or less. Switching to the CW-N mode on my trx and decoding with Dream I could listen to some DRM radiostations. At that time the only antenne I could use was a magnetic loop, mounted near the window. [...]

Digital Radio Mondiale reception with a simple setup is a blogpost from: ON3JT

My first qso into the USA using psk31 on 20m

Joost — Wed, 01 Oct 2008 06:12:41 +0000

It has been a while that I posted something on my blog here. Don’t panic, I’ll try to do it more frequent. I’ve been busy with all kind non-ham related things. But yesterday I managed to find a free moment and put the transceiver on the 20m psk band. Around 20:40 UTC I noticed a qso that [...]

My first qso into the USA using psk31 on 20m is a blogpost from: ON3JT

QSO with SV1EAG and webcam feedback

Joost — Thu, 17 Apr 2008 16:25:34 +0000

I made a qso in PSK31 today with SV1EAG, George in Greece. I hear you thinking : “Nothing special…” But he mentioned this : (YOU CAN WATCH THIS QSO IN MY LIVE CAM IN http://www.sv1eag.blogspot.com/ IF YOU WANT TRY IT) And I did. I could see the text that I was sending on his screen via the webcam. I was [...]

QSO with SV1EAG and webcam feedback is a blogpost from: ON3JT

PSK125 qso with Argentina

Joost — Sun, 06 Apr 2008 20:07:52 +0000

Today, I saw Daniel LU3DXI calling cq in PSK125. PSK125 is faster than PSK31, so you have to speed up yourself to read and write the qso LU3DXI LU3Ds nN3JT My fHing Ur RST is 599, 599By age 51 year My QTH is CARAPACHAY CARAPACHAY Ubicated into a 15 Km away of the North of Buenos Aires ARGENTINA My [...]

PSK125 qso with Argentina is a blogpost from: ON3JT

My first PSK31 qso with Brazil (PY2VA)

Joost — Sat, 05 Apr 2008 09:51:02 +0000

I was monitoring the 20m PSK31 band and saw this guy calling CQ : CQ CQ DE PY2VA iVA PY2VA CQ CQ CQ PY2VA PY2VA ttY2VA PSE K I replied and hoped that he will pick up my signal with the 10 watt limitation. PY2VA de ON3JT ON3JT pse kn And yes he did MN3JT MN3JT HELLO !! OM DE [...]

My first PSK31 qso with Brazil (PY2VA) is a blogpost from: ON3JT