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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/SKEEJ5UFLBGAT6PWAKDGC6SHSS5YPD36/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "CANsNeape2tonmXr_N2u=Z5HsGOh3BH6qkn0pSuZR6+tN=fTOrw@mail.gmail.com",
    "message_id_hash": "SKEEJ5UFLBGAT6PWAKDGC6SHSS5YPD36",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/SKEEJ5UFLBGAT6PWAKDGC6SHSS5YPD36/",
    "sender": {
        "address": "rich (a) ourowndomain.com",
        "mailman_id": "de4e965f89da4d4790638af3cb47f33c",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/de4e965f89da4d4790638af3cb47f33c/emails/"
    },
    "sender_name": "Rich Gopstein",
    "subject": "[pacsat-dev] Re: AX5043 deafness",
    "date": "2023-04-28T19:36:13Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Even though you think the frequency is correct, you might try adjusting the\nxmit frequency up and down slightly to see if that has an effect.\n\n\n\n\nOn Fri, Apr 28, 2023, 2:12 PM Chris Thompson via pacsat-dev <\[email protected]> wrote:\n\n> Yep, good idea Rich.\n>\n> In my test setup the RSSI for 70cm is about 180.   For 2m it is 200.\n> Maybe it is too strong and causing distortion?  Do we know the valid range?\n> To test I put in 10dB and then 20dB of attenuation and dropped it to 190\n> and then 180 but it is not more reliable.   The background noise is\n> hovering around 150.\n>\n> 73\n> Chris\n>\n> On Fri, Apr 28, 2023 at 12:10 PM Rich Gopstein via pacsat-dev <\n> [email protected]> wrote:\n>\n>> For fun, you can check the RSSI while receiving on both bands.  Might\n>> tell you something...\n>>\n>> On Fri, Apr 28, 2023 at 12:04 PM Jim McCullers via pacsat-dev <\n>> [email protected]> wrote:\n>>\n>>> Chris,\n>>>\n>>>\n>>>\n>>> I assume you are referring to packets you are generating locally.\n>>>\n>>> I’ve only tested with the Pi boards and noticed no difference with\n>>> locally generated signals between the 70cm board and the 2-meter board\n>>> after getting the frequency correct.\n>>>\n>>> My 2-meter Pi board appear a bit deaf on signals from the local APRS\n>>> digipeters.\n>>>\n>>>\n>>>\n>>> Guess I need to get the LaunchPad set up.\n>>>\n>>>\n>>>\n>>> I’ll review the schematic on the daughter board but the schematic should\n>>> be identical to the Pi schematic.\n>>>\n>>>\n>>>\n>>> Let me explore.\n>>>\n>>>\n>>>\n>>> 73\n>>>\n>>>\n>>>\n>>> Jim\n>>>\n>>>\n>>>\n>>> Jim,\n>>>\n>>>\n>>>\n>>> I have the AX5043 working on 145.835.  It ranges correctly and receives\n>>> packets.  At least it receives them some of the time.  It seems to be quite\n>>> deaf compared to wje it was working on 436.8, which is my 70cm RX\n>>> frequency.  That receives every packet without error.\n>>>\n>>>\n>>>\n>>> I had the same issue on 70cms until you told me to tweak the frequency.\n>>> But with the TXCO it seems to be right on frequency.  I ran a test to TX on\n>>> the RX frequency and it seems to be correct according to my TinySA.\n>>>\n>>>\n>>>\n>>> thoughts?\n>>>\n>>>\n>>>\n>>> 73\n>>>\n>>> Chris\n>>>\n>>>\n>>>\n>>> --\n>>>\n>>> Chris E. Thompson\n>>> [email protected]\n>>> [email protected]\n>>>\n>>> -----------------------------------------------------------\n>>>\n>>> pacsat-dev mailing list -- [email protected]\n>>> View archives of this mailing list at\n>>> https://mailman.amsat.org/hyperkitty/list/[email protected]\n>>> To unsubscribe send an email to [email protected]\n>>> Manage all of your AMSAT-NA mailing list preferences at\n>>> https://mailman.amsat.org\n>>>\n>>\n>> -----------------------------------------------------------\n>>\n>> pacsat-dev mailing list -- [email protected]\n>> View archives of this mailing list at\n>> https://mailman.amsat.org/hyperkitty/list/[email protected]\n>> To unsubscribe send an email to [email protected]\n>> Manage all of your AMSAT-NA mailing list preferences at\n>> https://mailman.amsat.org\n>>\n>\n>\n> --\n> Chris E. Thompson\n> [email protected]\n> [email protected]\n>\n> -----------------------------------------------------------\n>\n> pacsat-dev mailing list -- [email protected]\n> View archives of this mailing list at\n> https://mailman.amsat.org/hyperkitty/list/[email protected]\n> To unsubscribe send an email to [email protected]\n> Manage all of your AMSAT-NA mailing list preferences at\n> https://mailman.amsat.org\n>\n\n\n",
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