Showing posts with label digital modes. Show all posts
Showing posts with label digital modes. Show all posts

Friday, August 14, 2020

Heard in almost every part of the world in 24 hours

Digital modes, and FT8 in particular, are a fascinating way to find out just how far your signal can be heard or decoded. Admittedly FT8 can do things that the likes of CW can only dream of, with the ability to decode signals as faint as -24dB. Yesterday, I had fun on different bands at different stages, using FT8 and about 15 to 50 watts depending on band. On the high bands, I used my Antron 99 vertical antenna. On the lower bands, I used the nested inverted V antennas for 80m, 40m, 30m and 20m.

My FT8 signal was picked up as far away as Alaska, Tasmania, China and South Africa.

Looking at the map (thanks to pskreporter.info), it is nice to see that my signal was heard on pretty much every continent, with the exception perhaps of Antarctica where monitoring stations are few and far between. I was heard in south America, Alaska, Tasmania, South Africa, China, Japan and Malaysia. I worked some nice DX too, including 9M2TO in West Malaysia on 40 metres (using a simple inverted v dipole), some South American and Caribbean stations on the same band, and China on 17m.

Both 17 metres and 30 metres have proven to be excellent bands for surprise DX. Last week, using just 20 watts and my Antron 99 vertical antenna, my CQ on FT8 was answered by two JA stations. Both were logged and later confirmed on Logbook of the World.

The huge amount of FT8 activity (seen on all the bands from 80m through 6m) is occurring, it would seem, to the detriment of other modes, especially phone and CW. There is much less activity on phone and CW since I was last "very" active, about two years ago. Perhaps everyone is using FT8 because of the sunspot minimum. With the solar flux index hovering around 70, we won't be seeing any spectacular openings on the higher bands just yet. But as sunspot cycle 25 has begun, there are signs that things could be about to turn a corner.

While I love FT8 and the possibilities it brings, I am also a major fan of CW and I do like SBB too. So let's hope that FT8 hasn't stolen all the action and that as the months progress I will start to log far-distant DX stations using CW and phone as well as FT8.



Tuesday, August 11, 2020

The trusty Antron 99 is a much-underestimated antenna

My Antron 99 is a wonder. It's a simple vertical, designed to operate on the citizens band, but has effective performance on the 17 metres, 12 metres and 10 metres amateur bands. I have used it for years for the higher bands, often as an alternative to the hexbeam. It has worked wonders for me. On 28 Mhz, when the sunspot numbers were really good, I worked DXCC and much more in about six weeks during the solar peak. Many of those contacts were made using the Antron.

The reach of my signal today on FT8 using between 15 watts and 75 watts and the Antron.

It is a half wave over quarter wave variable mutual transductance tuned antenna and is rated for 2,000 watts (I assume that's PEP). It doesn't claim to be anything special, and I have heard several hams saying that it isn't, and that by virtue of its design it shouldn't be anything special. But it works, and works well.

I have recently been enjoying using the Antron for some FT8 activity on 17 metres. A couple of days ago, while calling CQ with just 20 watts, I was answered by two Japanese (JA) stations and successfully logged them. Today, I decided to increase the power a bit and was delighted to see the great reach of my humble station. My signal has been decoded as far east as Japan and as far west as California. Not bad for a CB antenna!

Sunday, December 7, 2014

Doing a little bit of JT65 over the weekend

When there's no big dxpeditions on and no particularly rare DX to be worked, sometimes it's nice to unwind with a bit of digital mode action. I personally like to do some PSK and occasionally some JT65 on such occasions. I find digi modes relaxing. I don't need the linear on and I can work at a fairly relaxed pace. Last night, I made a couple of QSOs on 80 metres using JT65 running just 15 watts. I was surprised at how quiet the band was. There was no DX on, but I didn't mind. Today, I was decoding JT65 on 20 metres and even made a QSO into Greece using the WSJT-X software. Here is a screen shot:

Earlier, I made a couple of ragchew QSOs on 10 metres CW, using 100 watts and my Antron 99 vertical. I had a chat with VE1DX, Paul in Halifax, and WA2DTW, Steve in Pennsylvania. I find that I can now ragchew on CW, and although I still miss words, I am much more comfortable than even a year ago.

Tuesday, June 4, 2013

VIDEO: Working my second 6m PSK QSO

This is a video that was recorded live while I worked EA6ES, my second QSO on digital modes on the 50Mhz (6 metre) band. I had just worked EA3AYQ as my first ever 6m digital contact, on PSK31, and could hear a few strong signals from the direction of Spain. You can hear the PSK tones in the video - I left them playing so that you could hear them. EA6ES is in Palma Mallorca in the Balearic Islands. His name is Francisco, as you can see in the video. He didn't mind having a bit of a chat with me, which, although unusual on 6m because the band can close very quickly, was very welcome because it makes the video more interesting in my opinion. Anyway, I hope you enjoy this video, warts and all !

Tuesday, May 14, 2013

We've had digi QSOs on PSK, RTTY and JT65!

A JT65 QSO with W1YIF.
We've endeavoured to try to work some QSOs on digital modes while on Inis Mór. Thanks to the efforts of Liam, EI7DSB, we had several QSOs on the weak signal mode JT65. Liam demonstrated extraordinary patience while using this mode, plucking out QSOs at a rate of one QSO every six minutes! He also enjoyed his first foray into PSK31, which he enjoyed thoroughly. Just now EJ7NET is active on 20 metres RTTY.

Band conditions have been such that we've tended to use more CW than phone, with reasonable success. We don't have a total QSO tally at this stage, but we should know tomorrow morning when we export all the ADIF files from the various laptops and merge them into one complete log.

Gordon GM7WCO on 17m CW.
80 metres has been very poor. For two nights now we've tried 80m phone and CW, with very few callers coming back. 40 metres has been much better, particularly on CW, while the bands that have seen the highest Q rate have been 17 metres, 20 metres and 30 metres. A sustained sporadic E opening on 6 metres yesterday evening lasted several hours and we now have well over 200 QSOs on that band. We are using a small halo antenna for 6m, and were heard all over EU yesterday, from Scandinavia to Iberia to the Black Sea.


A very short video showing Liam explaining a JT65 QSO.