Email Detail

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/MGISJLAYLMALAVQWD6FIPMMJFIFNM6NN/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "MGISJLAYLMALAVQWD6FIPMMJFIFNM6NN",
    "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] Sat Tracking and SatPC32 w/ICOM rig - CT-17 hardware mod\tneeded",
    "date": "2009-04-12T19:05:57Z",
    "parent": null,
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/E3X7557EOWVXJPQCJGPUG4LVV3PBGE5D/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "\nThis may be old news to many but perhaps will save a few hours of frustration for newcomers.\n\nIn my prior post about HRD Sat Tracking slowness with my Windows Vista computer, I reported there that ST was working very slowly with my Lenovo desktop running Windows Vista, but that it ran at normal speed with a laptop running Windows XP. However, the frequencies were not tracking properly -- the transmit frequency would \"stick\" as the receive frequency on my IC-7000.\n\nIt seems there is a hardware cause for this issue. After I gave up trying to get HRD Sat Tracking to work with the laptop, I downloaded SatPC32, another program that automatically sets transmit and receive frequency to account for doppler. The same \"sticking\" problem occurred with that program.\n\nThe ReadMe(Icom) in SatPC32 provides what appears to be an explanation for this issue:\n**************************\nWith ICOM half duplex transceivers (IC-706MKIIG, IC-7000) hardware\nhandshaking must be installed to suspend computer control while the radio\nis transmitting. Frequency changes are theoretically possible while the radio\nis transmitting, but frequency errors will occur, i.e., the frequencies\nof VFO A and VFO B will be exchanged.\n\nUnfortunately there is no way to check the PTT state of the radio via\nthe CAT software. Therefore hardware handshaking is needed to prevent\nwriting to the radio while it is transmitting. On the radio side pin 7\nof the ACC socket can be used for this purpose. The voltage at this pin\nis approximately + 8.0 V while the radio is in RX mode. In TX mode the\nvoltage at pin 7 drops to 0.\n\nPin 7 of the ACC socket must be connected with the CTS pin of the\nserial port on the PC side (pin 8 of the 9-pin, pin 5 of the 25-pin\nRS232 cable connector). I have connected these pins via a diode\nand a 5K resistor, see Acc_Com.jpg in this sub folder.\n\nIT GOES WITHOUT SAYING THAT EVERYONE INSTALLS THIS LINE AT HIS OWN RISK!\n\nWhen the radio pulls down the voltage at pin 7 to 0, it signals the PC\nnot to send data. As soon as the radio is back in RX mode the frequencies\nare updated by the program.\n\nATTENTION! There must be NO bridge between pins 7 and 8 of the 9-pin\n(5 and 4 of the 25-pin) cable connector at the PC side! Otherwise the\nvoltage at Pin 8 (rsp.Pin 5) and therefore also at Pin 7 of the ACC\nsocket will be pulled down and the radio will be switched into transmit\nmode. The sketches in the Icom sub folder provide this bridge. If it is\nbuilt in, please, remove it.\n\nThe 25-pin Connector at the ICOM CT-17 also provides a bridge between\npins 4 and 5 and other pins. The CTS pin of the cable connector at the\nPC side must be connected only to Pin 7 of the ACC socket.\n*************************\nThus, as I appreciate this, a standard ICOM CT-17 CAT cable will not work properly with SatPC32, and presumably not with HRD Sat Tracking either.\n\nCan anyone confirm this? Does anyone sell modified CT-17 cables that will do the job?\n\n73, Bill NZ5N \n\n\n      \n",
    "attachments": []
}