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Showing content with the highest reputation on 12/10/22 in all areas

  1. SOBX

    ARRL Membership

    My apologies. I missed the part in the TOS where freedom of speech was conveyed only after a certain period of time on the forum. And my turkey cost the same as it did the last 20 years....one round of Winchester Longbeard XR 3-inch, 1¾-ounce, No. 5. Don't tell me you actually buy turkeys, city boy. ? PS: Thank you for your service. You were worth it, Brother.
    2 points
  2. KAF6045

    Wouxun radios

    I strongly suspect the limit is imposed by the RF Exposure calculations: HTs are either body worn (with speaker/mic) or held within a few inches of the head -- SAR measurements are done to ensure the RF energy is below the limit for the frequency in use... In the most sensitive frequency bands, that necessitates a lower power.
    2 points
  3. Commercial air band runs from around 118 to 136MHz. (Military is around 380MHz) And yes, it is AM. There is reason for that. Unlike FM -- which has a "capture effect", where the strongest signal becomes the only signal that is "tracked" by the receiver; AM will let all signals on the frequency through. This is desirable because it means a distress call can be heard even while there is a communication going on between ground control and an aircraft.
    2 points
  4. UncleYoda

    Wouxun radios

    Not specifically referencing power limits, but this is wording I got in a response from the folks in charge, if it helps: Handheld portables are a subset of mobile stations and must comply with any applicable mobile station requirements and any additional requirements for handheld portable units.
    1 point
  5. Works when connected to automobile sound system. However, when streaming music, such as Pandora, any Rx will take over and pause music, but does not return to music after.
    1 point
  6. Again gentlemen, THANK YOU VERY MUCH. For someone that ran a BIG RADIO at one time. This GRMS is all new to an old OUTLAW. Thanks. WRME-377
    1 point
  7. Rather than using the screen, it’s much easier for me (with my NanoVNA) to use the PC based software (VNASaver). The screens are separate and the controls seem easier and more intuitive to use, at least for me. I absolutely agree that you must turn off all the displays that you don’t need, like the Smith chart, etc. Also, keep the bandwidth as narrow as possible. Those jumbled mess traces with sharp inflections and straight nearly vertical traces are typical when viewing too much bandwidth at a time. They’re a product of the fact that you have relatively few points (501 in your case it appears) being displayed, so the VNA simply draws straight lines between them. Viewing all the way from 462 to 468 MHz is much wider than you want. Instead, limit the width to 500KHz above and below the frequency you’re concentrating on. Depending on what you’re measuring that may even be unnecessarily wide. Good luck!
    1 point
  8. SteveShannon

    Wouxun radios

    I think you’re probably right.
    1 point
  9. As of 2022-12-09: Files available from their website: GM-30_Firmware & Software_V1.05 GM-30_Firmware 20210403 & Software_V2.06 GM-30_Firmware 20210615 & Software_V2.06 -----reply email from Radioddity Hi Dennis, 6.03.009 is the latest firmware from 11.17.2021 6.03.006 was the previous from 6.15.2021 6.03.003 (IIRC) was in the 4.03.2021 release 6.03.001 was in the V1.05 download from 3.18.2021 6.03.009 and 6.03.006 are the same, except 6.03.009 was provided for GM-30 radios that had a chip change due to supply shortages and the FM broadcast radio did not work. That is the only difference I have found. If you have v6.03.009 and the FM Radio can pick up local stations, that is as new as is available. Cheers, David ________ Radioddity Support Team
    1 point
  10. MichaelLAX

    Wouxun radios

    TRUE: but no one else knows why it's funny!!! ?
    1 point
  11. I will second @Sshannon...receive tone is optional. Imo, the easiest way to think of it is like a filter. If you set a tone, you only hear signals with a matching tone. (This is why you need a tone to use the repeater). Leaving the receive tone off is equivalent to no filter, so you hear all the signals that are stronger than your squelch setting. While it can be nice to filter to only hear a repeater on the repeater channel, not all repeaters use an output tone, and it can complicate initial setup because it's an additional variable to make sure is correct...confirm things are working at the simplest level first.
    1 point
  12. WRUU653

    Wouxun radios

    Seems like we've been down this road recently Regs don't list an actual power limit for HTs on the 462-467 main channels - Page 3 - Technical Disc… 2.webloc
    1 point
  13. No, you don’t have to program a receive tone. If you leave it blank you receive everything transmitted on that frequency. I usually recommend leaving the receive tone empty until everything else is working.
    1 point
  14. SteveShannon

    Wouxun radios

    To make it easier to discuss, rather than a screenshot here are the regulations: Each regulation only means what it says, nothing more and nothing less. The limitation 95.1767(b) for the 462 interstitial channels, only applies to stations transmitting on the interstitial 462 channels. Likewise, limitation 95.1767(c) only applies to stations transmitting on the 467 interstitial channels. Nothing about those limits extends to the other two sets of frequencies (462 MHz main and 467 MHz main). Rules just are not written like that. Neither does the lack of a listing for a power limit for a Hand-held Portable cause the lower limits listed in 95.1767(b) to apply to 95.1767(a)(1). If it did that would be very tricky to determine whether to use the 0.5 w ERP limit of 95.1767(c) or the 5 w ERP limit of 95.1767(b). The fact is, no output power is specified for hand-held portable stations in 95.1767(a) unless you consider a hand-held portable as a subset of the mobile category, in which case 95.1767(a)(1) applies, limiting a hand-held portable to the same limit as a mobile. To me that doesn't seem right. Now therre may be a higher level regulation somewhere that limits ALL hand-held transcievers to a 5 watt limit; I just don't know. The definition of a Hand-held Portable may support that. From Subpart A: Hand-held portable unit. A physically small mobile station that can be operated while being held in the operator's hand. So, I still haven't seen a rule or regulation in part 95E that limits the output power (which is not the same as ERP) of a hand-held portable in the GMRS service to 5 watts. I'm convinced I'm simply missing something, but the explanation you propose doesn't seem right to me.
    1 point
  15. Let me go check... UPDATE: I do not see any firmware listed on the Radioddity Support website. What firmware version do you have? Turn off power Hold down V/M button Turn on power Firmware version should be listed last.
    1 point
  16. KAF6045

    ARRL Membership

    Let's see, off the top of my head... Radio Society of Great Britain (RSGB)... Japan Amateur Radio League (JARL), Radio Amateurs of Canada (RAC) -- and all the national groups listed https://en.wikipedia.org/wiki/List_of_amateur_radio_organizations
    1 point
  17. The Video's opening voice clip says 600: THETA System 600 Manhattan NY
    1 point
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