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  1. Replies
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    Try opening your device manager with the dongle...

    Try opening your device manager with the dongle plugged in & click remove device. Unplug it and plug it back in...
  2. Thread: Introduction

    by 5B4AJB
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    Welcome from 5B4 land!

    Welcome from 5B4 land!
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    As with a lot of Amateur Radio, suck it and see,...

    As with a lot of Amateur Radio, suck it and see, experiment, your mileage may vary...
  4. You should be good to go with open feeder on 40....

    You should be good to go with open feeder on 40. The losses are far less at low frequencies, so, provided you have a good fundamental resonance, you should have less noise...
  5. Thread: Sigma RF2000 ?

    by 5B4AJB
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    261

    I'd take the markings on the front with a pinch...

    I'd take the markings on the front with a pinch of salt.
  6. Thread: Sigma RF2000 ?

    by 5B4AJB
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    261

    I can only find one small, blurry image of the...

    I can only find one small, blurry image of the unit, can you provide a bigger one?
    An inside image would be helpful too...
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    Sounds like the coax is damaged, you have a braid...

    Sounds like the coax is damaged, you have a braid shorting at the far end, or the D.C. cabling isn't man enough.
    Please tell me you wired it through fuses directly to the battery...

    Either that...
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    No, you already have it working :p Those...

    No, you already have it working :p

    Those interfaces you mention only offer a seperate soundcard interface and PTT. You can use your existing PC sound interface for the same effect.

    The best...
  9. Thread: The lovely C.B.

    by 5B4AJB
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    That's not uncommon, especially if it's an OT...

    That's not uncommon, especially if it's an OT club, happened to me.

    I'd just got my first callsign, built a Double Diamond for 2m and took it to a friends club where I was asked how I designed it...
  10. Have you tried an old satellite dish with a...

    Have you tried an old satellite dish with a simple USB dongle at the feedpoint?
  11. I was always told open feeder had the lowest loss...

    I was always told open feeder had the lowest loss (at H.F. anyway).

    Try it with a load on the end, or a simple short and see what happens...
  12. Thread: The lovely C.B.

    by 5B4AJB
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    I did. It is a good way to start off -...

    I did.

    It is a good way to start off - visiting a huge scout camp in Switzerland many years ago, they had a C.B. station set up to talk to the other end of the camp. I was fascinated by it, went...
  13. Thread: Icom 7600

    by 5B4AJB
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    Base Radios Sounds like a stuck relay or a faulty final?

    Sounds like a stuck relay or a faulty final?
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    For receiving anything above about 30MHz, you...

    For receiving anything above about 30MHz, you need antenna height & low-loss coax. A wideband masthead preamplifier can be useful here, but the signal gain can overwhelm most receivers.

    Mounting...
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    I was listening to SSTV on 20m today. You can...

    I was listening to SSTV on 20m today.

    You can use one of these to get H.F. on your SDR - I've had one for a long time and it works well on my Funcube dongle...
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    Probably... look carefully at the 3-5V input...

    Probably... look carefully at the 3-5V input (bottom right), see the ground connection (right-hand pin) goes to the big groundplane all around the board? if the tinned corners are connected like...
  17. You will kill the amplifier if you put 50 Watts...

    You will kill the amplifier if you put 50 Watts into it, it's rated for 10W input for 160W out. If you put 5W in, you should get 80W out etc.
    Also, make sure you check your SWR is OK before you run...
  18. Thread: Ft-817 CW key

    by 5B4AJB
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    Mobile Radios Maybe the paddle is wired up wrong for that...

    Maybe the paddle is wired up wrong for that radio, two switches effectively with a common ground. You may also need to select CW mode to enable the socket - I don't know the radio, but the manual...
  19. RG8 is pretty useless at UHF unless it is for...

    RG8 is pretty useless at UHF unless it is for very short runs, under 5m

    Normally, it would be used in a mobile environment, where flexibility and ease of routing are necessary attributes...
  20. Handheld Radios Its not a power-saving feature turned on? I...

    Its not a power-saving feature turned on? I noticed this on my Icom P2E when I first got it.
    Go through the menus & disable any power saving options, see if that helps...
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    If you're thinking of installing a pre-amp, go...

    If you're thinking of installing a pre-amp, go for a masthead type, otherwise you'll just be amplifying the noise picked up by the coax.

    A good masthead preamp on VHF/UHF/SHF might mean the...
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    Its performance is similar to a dipole, that is,...

    Its performance is similar to a dipole, that is, there are front & back broadside lobes of equal gain.

    Here's my 14MHz to about 50MHz magnetic loop....
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    I had a lot of success with a simple long wire,...

    I had a lot of success with a simple long wire, an ATU also helped to some extent. WeFAX doesn't require a huge signal to noise ratio, but, the images will come out better on a proper tuned antenna....
  24. Thread: My new website.

    by 5B4AJB
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    I have a similar power supply which I lent to my...

    I have a similar power supply which I lent to my brother last week, got it back today and fixed a loose terminal post, blew out the dust and thought "this has to be over 30 years old"
    You know its...
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    I used a couple recently in a spot-welder. Our...

    I used a couple recently in a spot-welder. Our microwave oven died recently so I tore the transformer out and rewound the secondary.

    The primary is connected through a series of relays, the first...
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