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  1. Thread: UK CodePlugs

    by G7RUX
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    7,326

    You could try using the Anytone codeplug that...

    You could try using the Anytone codeplug that moonraker.eu provide as a starting point if that helps?
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    What counterpoise are you using with the antenna?...

    What counterpoise are you using with the antenna?


    Sent from my iPhone using Tapatalk
  3. The measurement of field strength and referring...

    The measurement of field strength and referring this back to the EIRP of a transmitter is well documented and isn't terribly hard, given that you have a receive antenna of accurately known gain.
    ...
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    Hi. The vx8 is a fine radio, if a touch...

    Hi.

    The vx8 is a fine radio, if a touch pricey for my tastes. Consider using one of the single band handies that are available rather cheaply, or even two if you want two bands, as the...
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    Hi to the OP. There are a lot of devices which...

    Hi to the OP.

    There are a lot of devices which use 433.920MHz, most of which would be sporadic in their use of the rf link. One type of device which tends to use it more or less continuously is...
  6. Thread: DMR

    by G7RUX
    Replies
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    4,304

    I suspect that you may be confused with the...

    I suspect that you may be confused with the system we call TETRA in Europe; DMR Tier 2 (what DMR-MARC kit uses) has two timeslots. The RF channel BW is still 12.5 kHz but is often referred to as half...
  7. Thread: DMR

    by G7RUX
    Replies
    7
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    4,304

    DMR

    Hi all,

    Is anyone on here operating on DMR? I'm shortly to be joining the network and was wondering if there might be anyone around to chat with. ;-)

    Jason G7RUX
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    Radio Accessories They sound like the sort of core one would use...

    They sound like the sort of core one would use for a choke in a largish switched-mode PSU, having a single turn (or perhaps just half a turn) of rather heavy gauge enamelled copper on them.
    ...
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    10,547

    Poll: When one is watching the televisual receiver...

    When one is watching the televisual receiver whilst on board a machine, one must always ensure that the receiving antenna is securely fastened.

    Either word works perfectly well for the tuned bit...
  10. Well, you've ascertained that your transceiver...

    Well, you've ascertained that your transceiver works for simplex, so that's a start. I would suggest trying to get a nearby operator to check what your audio sounds like to experienced ears.

    You...
  11. I would suggest having a go at a simplex QSO...

    I would suggest having a go at a simplex QSO first, just to get a report from a local ham on your output.
    Then look carefully at what the transceiver is doing when you transmit for the repeater; in...
  12. Erm, no, not if you wanted to work well.

    Erm, no, not if you wanted to work well.
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    For antennas for DFing, have a Google for...

    For antennas for DFing, have a Google for "doppler df", this makes a very capable df antenna to use with your UV5.

    Regarding building a 2m transmitter, the design and complexity depends entirely...
  14. Actually, there is a way you could use it...

    Actually, there is a way you could use it (assuming the coax run is reasonably long) for SW reception.

    A receiving ATU is a good idea (and pretty cheap) but even without, what you do is this....
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    12,534

    The acceptable mismatch depends entirely on the...

    The acceptable mismatch depends entirely on the transmitter in use. Generally, the design of the PA dictates how much excess, reverse power it can dissipate so you'll need to look at the specs for...
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    Haha, I once (with the necessary permissions) put...

    Haha, I once (with the necessary permissions) put out a maritime. Mobile CQ on 2m FM from the Woolwich Ferry.

    Cue massive pileup!!

    Of course, the rules for /MM. Have changed now. :-(

    Jason...
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    QRP Oh well, nothing heard. :-( I was being swamped...

    Oh well, nothing heard. :-(
    I was being swamped by Italian and Ukrainian stations who vere very much on a QRO kick. One chap from Israel was running monster power (he claimed 500W but I suspect...
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    QRP CQ CQ CQ de 20m...

    Morning all.
    I am expecting to be on 20m SSB from around 1800hrs UTC today (16th July) from West Kent so do give me a call if you're up for a chat.

    Regards
    Jason G7RUX
  19. Replies
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    Ah, gotcha. When you said PMR I thought you meant...

    Ah, gotcha. When you said PMR I thought you meant general PMR.
    So, PMR446 frequencies are all over the Web (note the interesting 6,25kHz step/offset) so that should be fine. The CTCSS tones you need...
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    Erm, you might need to revisit your calculation;...

    Erm, you might need to revisit your calculation; 3dB above 100W would be 200W.

    Jason
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    The actual frequencies programmed into the...

    The actual frequencies programmed into the positions numbered 1 to 16 would depend on the frequencies set out in your licence so that's where you need to look. The 1-16 are just numbered memories on...
  22. Thread: RTTY for 817

    by G7RUX
    Replies
    5
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    3,013

    Portable Radios Ha! If it was Prolific then the problem would...

    Ha!

    If it was Prolific then the problem would not have occured!

    Just buy a decent cable (USB ones aren't available from Yaesu IIRC.)
  23. Thread: RTTY for 817

    by G7RUX
    Replies
    5
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    3,013

    Portable Radios Indeed, I have been down this route and had a bit...

    Indeed, I have been down this route and had a bit of difficulty.

    Beware of the cables on ebay/Amazon as they are clone chipsets and cause all manner of troubles, I had to send mine back eventually...
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    Hi, There is often a lot of confusion about...

    Hi,
    There is often a lot of confusion about grounding with antennas. There are two main points to bear in mind. Firstly, if the antenna works against a ground then what you're looking for is a...
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    Morning all, a small update for you. Chris...

    Morning all, a small update for you.

    Chris W6HFP got back to me from my question about the coil wire and he says that it's 18 gauge tinned copper. I can definitely get some new wire to rewind it...
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