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{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/U4R263VKO74C2FS6P6K4EZ7R5QBRO44Q/?format=api", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api", "message_id": "[email protected]", "message_id_hash": "U4R263VKO74C2FS6P6K4EZ7R5QBRO44Q", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/MGISJLAYLMALAVQWD6FIPMMJFIFNM6NN/?format=api", "sender": { "address": "billdz.geo (a) yahoo.com", "mailman_id": "cf72c3fefd9647e5b0216b2b0300c538", "emails": "https://mailman.amsat.org/hyperkitty/api/sender/cf72c3fefd9647e5b0216b2b0300c538/emails/?format=api" }, "sender_name": "Bill Dzurilla", "subject": "[amsat-bb] Re: Sat Tracking and SatPC32 w/ICOM rig - CT-17 hardware\tmodneeded", "date": "2009-04-13T02:18:45Z", "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/E3X7557EOWVXJPQCJGPUG4LVV3PBGE5D/?format=api", "children": [ "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/3IYAOBESHHYPLWMSOAS6CUJUVSNKDOXG/?format=api" ], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "\nErich,\n\nWow, thank you so much for the reply. This is wonderful news. I was pulling my hair our trying to figure out an easy way to do the hardware mod, and like an angel you give me a much easier solution. The patch works fine and I am in business.\n\nOne question: In the last line of the patch description on your website, it says: \"To correct the downlink frequency during a QSO use the \"Downl. Corr.\" controls in menu CAT or the +/- keys of the numerical pad of the keyboard.\" I thought that the software automatically corrected the downlink frequency? Does this mean we should use the \"Downl. Corr.\" controls or the +/- keys and not the VFO dial on the radio to QSY?\n\n73, Bill NZ5N \n\n\n--- On Sun, 4/12/09, Erich Eichmann <[email protected]> wrote:\n\n> From: Erich Eichmann <[email protected]>\n> Subject: Re: [amsat-bb] Sat Tracking and SatPC32 w/ICOM rig - CT-17 hardware modneeded\n> To: [email protected]\n> Cc: [email protected]\n> Date: Sunday, April 12, 2009, 5:35 PM\n> Hello Bill,\n> the SatPC32.Exe and SatPC32ISS.Exe files that come with the\n> 12.8 setup file\n> require the hardware handshaking I have described in the\n> Readme(Icom) text\n> (the \"normal\" SatPC32 only with the semi duplex\n> radios IC-706MKIIG and\n> IC-7000 when used as single radio for satellite operation,\n> SatPC32ISS with\n> the IC-910H for \"inband\" operation in\n> non-satellite mode).\n> \n> Meanwhile this hardware handshaking is no longer necessary.\n> Some time ago I\n> have uploaded patch files on my website www.dk1tb.de\n> (English page\n> \"Downloads\", sect. 5 \"Patches\"). With\n> the IC-910H and IC-7000 the PTT status\n> is now checked via the software (CAT command hex. 1C. I\n> didn't know that\n> command when I released 12.8. My manual doesn't mention\n> it).\n> The IC-706MKGII doesn't provide such command, but Tony\n> Monteiro, AA2TX,\n> found a solution also for that radio and told me the trick\n> - many thanks to\n> him. So, also this radio does no longer require the extra\n> line between the\n> radio's\n> ACC jacket and the PC's serial port.\n> \n> On my website I have described how to use the patch files.\n> \n> 73s, Erich, DK1TB\n> \n> ----- Original Message ----- \n> From: \"Bill Dzurilla\"\n> <[email protected]>\n> To: <[email protected]>\n> Sent: Sunday, April 12, 2009 9:05 PM\n> Subject: [amsat-bb] Sat Tracking and SatPC32 w/ICOM rig -\n> CT-17 hardware\n> modneeded\n> \n> \n> >\n> > This may be old news to many but perhaps will save a\n> few hours of\n> > frustration for newcomers.\n> >\n> > In my prior post about HRD Sat Tracking slowness with\n> my Windows Vista\n> > computer, I reported there that ST was working very\n> slowly with my Lenovo\n> > desktop running Windows Vista, but that it ran at\n> normal speed with a\n> > laptop running Windows XP. However, the frequencies\n> were not tracking\n> > properly -- the transmit frequency would\n> \"stick\" as the receive frequency\n> > on my IC-7000.\n> >\n> > It seems there is a hardware cause for this issue.\n> After I gave up trying\n> > to get HRD Sat Tracking to work with the laptop, I\n> downloaded SatPC32,\n> > another program that automatically sets transmit and\n> receive frequency to\n> > account for doppler. The same \"sticking\"\n> problem occurred with that\n> > program.\n> >\n> > The ReadMe(Icom) in SatPC32 provides what appears to\n> be an explanation for\n> > this issue:\n> > **************************\n> > With ICOM half duplex transceivers (IC-706MKIIG,\n> IC-7000) hardware\n> > handshaking must be installed to suspend computer\n> control while the radio\n> > is transmitting. Frequency changes are theoretically\n> possible while the\n> > radio\n> > is transmitting, but frequency errors will occur,\n> i.e., the frequencies\n> > of VFO A and VFO B will be exchanged.\n> >\n> > Unfortunately there is no way to check the PTT state\n> of the radio via\n> > the CAT software. Therefore hardware handshaking is\n> needed to prevent\n> > writing to the radio while it is transmitting. On the\n> radio side pin 7\n> > of the ACC socket can be used for this purpose. The\n> voltage at this pin\n> > is approximately + 8.0 V while the radio is in RX\n> mode. In TX mode the\n> > voltage at pin 7 drops to 0.\n> >\n> > Pin 7 of the ACC socket must be connected with the CTS\n> pin of the\n> > serial port on the PC side (pin 8 of the 9-pin, pin 5\n> of the 25-pin\n> > RS232 cable connector). I have connected these pins\n> via a diode\n> > and a 5K resistor, see Acc_Com.jpg in this sub folder.\n> >\n> > IT GOES WITHOUT SAYING THAT EVERYONE INSTALLS THIS\n> LINE AT HIS OWN RISK!\n> >\n> > When the radio pulls down the voltage at pin 7 to 0,\n> it signals the PC\n> > not to send data. As soon as the radio is back in RX\n> mode the frequencies\n> > are updated by the program.\n> >\n> > ATTENTION! There must be NO bridge between pins 7 and\n> 8 of the 9-pin\n> > (5 and 4 of the 25-pin) cable connector at the PC\n> side! Otherwise the\n> > voltage at Pin 8 (rsp.Pin 5) and therefore also at Pin\n> 7 of the ACC\n> > socket will be pulled down and the radio will be\n> switched into transmit\n> > mode. The sketches in the Icom sub folder provide this\n> bridge. If it is\n> > built in, please, remove it.\n> >\n> > The 25-pin Connector at the ICOM CT-17 also provides a\n> bridge between\n> > pins 4 and 5 and other pins. The CTS pin of the cable\n> connector at the\n> > PC side must be connected only to Pin 7 of the ACC\n> socket.\n> > *************************\n> > Thus, as I appreciate this, a standard ICOM CT-17 CAT\n> cable will not work\n> > properly with SatPC32, and presumably not with HRD Sat\n> Tracking either.\n> >\n> > Can anyone confirm this? Does anyone sell modified\n> CT-17 cables that will\n> > do the job?\n> >\n> > 73, Bill NZ5N\n> >\n> >\n> >\n> > _______________________________________________\n> > Sent via [email protected]. Opinions expressed are\n> those of the author.\n> > Not an AMSAT-NA member? Join now to support the\n> amateur satellite program!\n> > Subscription settings:\n> http://amsat.org/mailman/listinfo/amsat-bb\n> >\n\n\n \n", "attachments": [] }