A Directed Messaging System for FSQ
Introducing FSQCall
Sending text using FSQ is generally very reliable, certainly more so than other digital modes that use no error correction. It is also very ‘slick’ (quick to tune, fast typing, and with no delays between overs). In other words an ideal mode for more advanced applications. Therefore, with just a little checking for errors, it has been possible to devise a very simple system (simple to use, that is), which can provide clutter-free communication (station selective squelch), and can also perform various message-related and station-related tasks.While not attempting to be a full Automatic Link Establishment (ALE) system, FSQCall performs similar functions (plus more) to allow stations to establish links and pass simple messages manually. The focus is on sending simple one-sentence messages or commands in a manner suited to the FSQ protocol. There is a handful of simple and easy to learn commands used by FSQCall. ALL of these are manually typed, while the receiver end is largely automated.
These simple commands allow you to:
- Find a station’s location and status.
- Read a station’s pre-defined message.
- ‘Poll’ a station to check how reception is.
- Send a sentence to all stations within range.
- Send a sentence to just one specific station.
- Send a sentence to be stored in a specific file.
- Change the transmitting speed at another station.
- Determine which program version a station is running.
- Call CQ (prints at all stations in range where CQ is enabled).
- Determine which other stations have been active, and when.
- Have a station relay your sentence to another station or stations.
- Raise an Alert at a station, with automatic response once acknowledged.
- Send a periodic ‘sounding’ message to let other stations know you are active.
This sounds like a tall order, but cunning design has allowed all this to be achieved with just eight easily remembered commands and a few others you won’t need much. The program itself lists the operating rules and syntax for you, so you can’t go wrong. The FSQCall message structure is simply an extension of FSQ. Every sentence starts automatically with your_call:<crc>. The crc (Cyclic Redundancy Check) is used to ensure that the source callsign is received correctly, since it’s often used in automatic replies.You simply type a destination callsign or direction (or maybe more than one), a one-letter command for each callsign (called atrigger), and a message, if needed. Then you just press ENTER, as in normal FSQ.
Here are some examples. The text shown bold is added automatically, outgoing text is in red, while replies (both automated and manual) are shown in blue. In the first exchange, ZL1BPU asks for ZL2ABC’s location, which is an automatic response:
zl1bpu:b6zl2abc@If in range, ZL2ABC will automatically reply:
zl2abc:2ezl1bpu Lower Hutt
Why is the callsign ‘zl1bpu’ repeated in the reply? So the receiving station FSQCALL selcall opens to allow the message to simply print:
Lower Hutt
As another example, ZL1BPU and ZL2ABC have established contact and are chatting, still with FSQCALL on:
zl1bpu:b6zl2abc Have you seen Jim ZL3JIM lately?
(ZL2ABC sees only Have you seen Jim ZL3JIM lately?)and ZL2ABC replies:zl2abc:2ezl1bpu Yes, he was at the club meeting on Wednesday.
(ZL1BPU sees only Yes, he was at the club meeting on Wednesday.)As you will by now have gathered, if your callsign isn’t in an incoming message, nothing will print. This keeps unwanted garble and stuff from other stations, not directed to you, off the screen. In the same way, unless you preface each transmission in FSQCALL mode with a callsign or allcall (a generalized callsign for all stations), nobody will see what you’ve sent.FSQCall acts like a smart squelch. It opens the receiver for printing (and other actions) when your callsign is received, and closes again when the actual receiver squelch closes (when the other station stops transmitting).
The Squelch is also ‘fade-proof’, using a smart delay squelch design to ride through fades that might otherwise close the Selcall.
Because the squelch also locks-out transmission, just as in FSQ, stations generally do not transmit over other stations, or reply until the other station has finished transmitting. Various delays are also added before automatic replies, in order to manage the priority of messages. Manually typed messages have the highest priority, automatic responses have medium priority, and sounding messages the lowest.
Up-to-date detailed descriptions of the FSQCall Syntax, suggested calling frequencies and Operating Rules are listed on the program Options Pane Syntax and Rules tabs.
See More: Link
Recent Posts
FT4TA expedition on Tromelin island 2014 [ Video ]
Tromelin island More information on http://www.tromelin2014.com and http://www.taaf.fr Book available here : http://blur.by/1LziqfS Read more
CQ WPX RTTY Contest – February 11-12, 2017
Photo: ED1R Identical wording is used for both the RTTY and CW/SSB rules where the intent is the same. However, there are some key differences for th... Read more
Successful 47 GHz Amateur Radio Moonbounce Test Reported
Mitsuo Kasai, JA1WQF, successfully decoded a 47 GHz signal bounced off the moon on February 10 by Al Ward, W5LUA. More tests are planned. Ward posted... Read more
George County hospital director wants to tap into amateur radio during emergencies
by April M. Havens LUCEDALE, Mississippi — George Regional Health System assistant safety director Harold “Butch” Murphy is hoping... Read more
A21EME Moonbounce and QO-100 Dxpedition
Chris PA2CHR has released a video of the A21EME eight band Moonbounce and QO-100 satellite DXpedition to Botswana in October 2019. Watch A21EME EME DX... Read more
Secret antennas and huge steel structures in central Germany – the world of waves and signals
Antennas transmit signals since 1886. The German physicist Heinrich Hertz developed the first antenna for transmitting electromagnetic waves. To this... Read more
MAJOR MILESTONES IN MEETING OF THE EXPEDITION TEAM, SUPPORTERS, AND VESSEL SKIPPER
June 6, 2015. Today we had the pleasure of a celebratory meeting of the expedition team, its largest institutional supporter, and the vessel skipper.... Read more
Elecraft KX3 GoBox
As I was contacted by a few HAMs where to get “my” box I would like to give you a little parts-overview. Unfortunately I`m not able to manufacture thi... Read more
3D printed desktop rack for KX3 / PX3
“Robert K5TD makes me wish I had a KX3. His own design of a 3D printed rack beautifully shows off the radio and panadapter and, from observation... Read more
There are no ads, please add some
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Ffsqcall-new-digital-mode%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
