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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/JB554SQ533PQC7OGDPC6F7P2A7G3VG6T/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "8DCA1FA464AD47FB818E247D957D266A@kb2m4PC",
    "message_id_hash": "JB554SQ533PQC7OGDPC6F7P2A7G3VG6T",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/POYGTAAEZYTKYKNLMUWJVMP2FKU6OTS6/?format=api",
    "sender": {
        "address": "jeff_griffin (a) comcast.net",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Jeff",
    "subject": "Re: [amsat-bb] RTSystems has Software for Kenwood TH-D74a",
    "date": "2016-12-04T18:44:49Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/BKKXKR6HQKUPCG7EIXFV7NCIFH33I5L7/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hi Patrick, Well I’m glad there is filtering added to the  SSB frontend. I remember trying to use a TH-F6a to RX FO-20/29 years ago and the RX bandwidth was a show stopper. The recording option sounds like a real plus for portable ops... \n\n73 Jeff kb2m\n\nFrom: Patrick STODDARD (WD9EWK/VA7EWK) \nSent: Sunday, December 04, 2016 1:18 PM\nTo: Jeff ; [email protected] \nSubject: Re: [amsat-bb] RTSystems has Software for Kenwood TH-D74a\n\nHi Jeff!\n\n\nWith the TH-D74, you get new features for receive filters. For SSB,\n\nthe high-cut value has possible options between 2.2 to 3.0 kHz. For CW\n\nbandwidth, it can be specified values between 0.3 and 2.0 kHz. On \n\nAM, the high-cut value can be between 3.0 and 7.5 kHz. This is, I \n\nthink, the sort of filtering that the TH-F6A sorely lacked. \n\nHaving this filtering makes the TH-D74's all-mode receiver work\n\nreasonably well, especially as an SSB receiver for satellite \n\ndownlinks. I am comfortable with using my TH-D74A as an SSB \n\nreceiver in place of one of my FT-817NDs or an SDR receiver.  \n\n\nThe TH-D74 also has an audio recording function, when a microSD\n\ncard is plugged into the radio. I used that to make recordings \n\nof different passes I worked (FM, SSB, packet), and also testing\n\na Bluetooth headset with this radio. I posted those recordings\n\nin the \"TH-D74A\" folder at http://dropbox.wd9ewk.net/ . If you want\n\nto hear recordings from SSB satellites specifically, please\n\nlet me know and I can get you those file names. \n\n\nI think Kenwood missed the mark a bit with this radio, not designing\n\nit to have the cross-band full-duplex capability of the TH-D72\n\nand TH-D7. Since the TH-D74A also operates on the 222 MHz band, it\n\nis possible that Kenwood's engineers based the TH-D74 on the design\n\nof the TH-F6A, but with lots of improvements and new features \n\nthat weren't possible with the older radio. \n\n\n73!\n\n\n\n\n\n\n\nPatrick WD9EWK/VA7EWK\n\nhttp://www.wd9ewk.net/\n\nTwitter: @WD9EWK\n\n\n\n\n\n\n\nOn Sun, Dec 4, 2016 at 5:55 PM, Jeff <[email protected]> wrote:\n\n  Does it still have the 6k  something + wide SSB frontend like  the 10+ year old TH-F6a? I read Patrick's post about it and I don't remember any Kenwood rep at Dayton say it would do full duplex. I think Kenwood really missed the boat on this one.\n\n  73 Jeff kb2m\n\n\n",
    "attachments": []
}