New RTTY user on Mac question #rtty#tinyfsk#mac#fldigi
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Need the latest SmartSDR and Power Genius Software? SmartSDR v3.1.12 and the SmartSDR v3.1.12 Release Notes. FSK for RTTY. Started’ section of the manual that goes with the software. There are two ways of producing RTTY. These are known as fsk (frequency shift keying) and afsk (audio frequency shift keying). All transceivers will allow afsk, but you will need specific connections on your receiver for fsk, which not.
#476 I just bought a FSK MORTTY for RTTY use. It's loaded with TinyFSK. I don't currently have a RTTY setup, so I'm trying to understand what my options are. I have a Mac and an Icom IC-756PROIII. I'm OK with the hardware setup, it's the software that I'm trying to figure out. After reading a bunch of posts, here are the questions:
Thanks Rich, KD2CQ |
#477 Rich, You do need NanoIO for the current version, I have Fldigi 4.1.09.17. I could not get NanoIO with Fldigi it to work. I sent Dave a email and he sent me the .17 version and no go on that one also. I was able to put the TinyFSK sketch in MORTTY and was able use N1MM logger on RTTY. So the problem is with the NanoIO sketch. If N1MM logger is available on the Mac give it a try. I sent a post to the Fldigi and MORTTY group about 10 days ago and heard nothing until you replied. On Wed, Feb 12, 2020 at 10:03 AM Rich <rich@...> wrote: I just bought a FSK MORTTY for RTTY use. It's loaded with TinyFSK. |
#478 Just to test, I loaded nanoIO on the MORTTY and tried fldigi with it. It looked like it was working (it wasn't connected to the radio, but the red and green lights seemed to be correct). If you have a way to use a terminal emulator to connect to the MORTTY at 9600 baud, you can test it manually by issuing commands and see if the MORTTY reacts correctly. Rich On Wed, Feb 12, 2020 at 1:08 PM jerry deibel <jerrydnj@...> wrote:
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#479 Rich, Fldigi with NanoIO was sending to MORTTY and the green light was blinking and red (PTT) solid, but it was only 1 rtty tone . My Icom 7610 was going into transmit and just putting out 1 tone of the rtty signal. Since the TinyFSK using N1MM was sending good Rtty to my Icom. To me the problem is with Fldigi. Not sure on how to use a terminal emulator to connect to the MORTTY at 9600 baud, what would that prove. Since I know the MORTTY is ok with running TinyFSK. On Wed, Feb 12, 2020 at 2:00 PM Rich <rich@...> wrote:
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#480 >I sent a post to the Fldigi and MORTTY group about 10 days ago and heard nothing until you replied. OUCH! 'heard nothing?' I saw your posting on February 3rd and also saw the 8 responses to your post - including suggestions from Dave W1HKJ the fldigi/nanoIO developer. You last post on February 5th said you had reverted to the original sketch on your Mortty, TinyFSK, and that it was working and sending good FSK. -larry (K8UT) From: 'jerry deibel' <jerrydnj@...> Sent: 2020-02-12 13:08:29 Subject: Re: [Mortty] New RTTY user on Mac question #rtty #tinyfsk #mac #fldigi
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#481 If the red LED is lighting in cadence with the Tx of each transmission, and the green LED is blinking rapidly during those transmissions to indicate FSK shifts, then it sounds like the software in your Mac and the hardware in your Mortty are working properly. If the radio goes into transmit when that red LED is lit, then you have PTT wired properly into your Icom 7610. Is the monitor audio is only a solid tone, then the FSK line into the radio is not wired properly _OR_ the radio is not set for FSK Digital operation. -larry (K8UT) From: 'jerry deibel' <jerrydnj@...> Sent: 2020-02-12 16:04:50 Subject: Re: [Mortty] New RTTY user on Mac question #rtty #tinyfsk #mac #fldigi
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#482 I think the nanoIO support in fldigi is not stable at the moment. I just tried with fldigi-4.1.09.18 and it worked sometimes, but froze up frequently. The radio wasn't even connected. |
#483 Jerry, I have two Mortty’s, one for CW and the other for RTTY and I’ve seen this same problem on RTTY using TinyFSK. This usually occurs 5 minutes before a RTTY contest and is resolved 30 minutes after the contest begins. I assume you’re going through the ACC jack from the Mortty. Assuming you have Modems / TTY / nanoFSK set correctly in FLDigi and If you see the green LED flashing, then Mortty is doing its thing. Go into your Icom setting screen and make sure you have RTTY keying set for ACC. I think the default is USB on the IC 7300 but the menus are the same. 73 Gene KJ4M |
#484 Yea, David, W1HKJ, developer of Fldigi sent me a fix for it (4.1.09.17) to correct NanoIO, but it did not fix the problem. toggle quoted messageShow quoted textOn Wed, Feb 12, 2020 at 5:48 PM Rich <rich@...> wrote: I think the nanoIO support in fldigi is not stable at the moment. I just tried with fldigi-4.1.09.18 and it worked sometimes, but froze up frequently. The radio wasn't even connected. |
#485 Rich, toggle quoted messageShow quoted textI only had Flidig 4.1.09.17, so I just installed 4.1.09.18 and tried it. Same problem, when I hit connect the PTT led goes solid and green blinks on the MORTTY. The Icom 7610 goes into transmit and just a single tone. When I hit the Status button in flidig:Configure:Modem:TTY:nanoIO: I get ( ~? ) in Debug Output. When I hit the Connect button with Status button on i get ( reset ~F ~F ~F ~F ~F ~? ) in Debug Output. Jerry On Wed, Feb 12, 2020 at 6:12 PM Jerry Deibel <jerrydnj@...> wrote:
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#487 Rich, This may not help you specifically, but may be useful to others with a Mac. I have just built a Mortty with the CW firmware. I have a Mac as well and have tested it with MacWinKeyer and FLDigi and it seems to work with those for CW emulating a WinKeyer. Not sure if you looked into CocoaModem on the mac. It also does RTTY, but I think it is sound card hardware based like a SignaLink or USB sound card in a radio. I don't see any settings that looks like it would trigger hardware...but then again I've never jumped on the RTTY band wagon. Aaron - N3MBH |
Setting Up MMTTY to run FSK
With FSK, you are not concerned about audio coming out of the sound card. You must key the FSK input to your transmitter with an interface circuit connected to a serial COM port using either the simple transistor circuit shown here or some other type of circuit. Many operators use opto-isolator transistors or IC circuits to key FSK and PTT from a COM port. Some commercially sold interfaces also include an FSK keying circuit (see Page 9). The choice of interface circuit is up to you. I’ve had great success with the simple transistor circuit. The advantage of opto-isolators is electrical isolation between COM port and radio. This may be helpful if you experience RFI or to protect the PC or radio in the unlikely event of a lightning strike. To eliminate RFI on my cables between computer and radio, I use ferrite or iron powder rods or toroids on nearly all my cables. Click here for my RTTY RFI page.
With FSK you have two necessities – FSK & PTT. With PTT, you have three choices. You can either build another circuit identical to your FSK circuit (for a nice packaged interface, check out the one built by Ron, ND5S, here), use a commercial interface, or use Radio Command within MMTTY. With MMTTY, if you are going to key PTT with an interface, you must use the same serial COM port for both FSK and PTT. And you set this COM port on the TX Tab of MMTTY Setup as shown here.
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The “PTT port” setting on the TX tab is actually for both PTT and FSK. If you use Radio command for PTT, you still must set the “PTT port” setting to the serial port where your FSK interface is connected. In the example above, the FSK interface is connected to COM3 regardless of how PTT is activated.
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Once the “PTT port” is set to the serial port connected to the FSK interface, go to the Misc tab of MMTTY Setup. Here you must set the “Tx Port” to “COM-TxD (FSK)”. Click OK and go back to the main MMTTY screen. Once the physical FSK connection is made to your transceiver, you are now ready to transmit FSK.