MV6+3 SandPiper Vertical HF 80m-6m

MV6+3 SandPiper Vertical HF 80m-6m.
Video Rating: 5 / 5

This video shows the details of adding a switch to the HF Packer V4 Amp to switch between CW and SSB mode – which was normally selected via an internal jumpe…
Video Rating: 5 / 5

14 replies
  1. Paul Collins
    Paul Collins says:

    Another most enjoyable, video, Alan, your channel is the only one of two
    sites that appeals to me the other is a UK fellow radio amateur . As a
    Radio amateur and hobbyist I enjoy the building circuits, so please don’t
    change your format. I want to build a simple tracking generator , do you
    have any idea’s of circuits that are around please.

    Reply
  2. Christopher Jones
    Christopher Jones says:

    I don’t play in the ham world but I like your ham videos for general rf
    info. If you didn’t have that watt meter could you check the power with
    your oscilloscope or spectrum analyzer? I used a spectrum analyzer once but
    it seemed like the info was relative and hard to quantify.

    Reply
  3. FrozenHaxor
    FrozenHaxor says:

    Hey, could you please do a tutorial about driving MOSFET transistors
    properly using TTL PWM signal? Can’t find a decent tutorial about that
    really and I’m in a middle of doing a project that involves driving a big
    24V DC motor. I’m sure that alot of people would find it useful. Thank you
    in advance!

    Reply
  4. salat
    salat says:

    Really nicely done – But wouldn’t you recommend the use of the PTT input
    over the RF sense anyway? A cable to the TRX with an integrated reed relais
    with integrated diode is done quickly..

    Reply
  5. w2aew
    w2aew says:

    It comes down to personal preference, especially considering how much gear,
    wires, etc. to pack when running in the field.

    Reply
  6. FrozenHaxor
    FrozenHaxor says:

    Actually I will need a bi-directional control but I planned to do that
    using relays. I think that H bridge with 4 MOSFETs would be a better
    solution though, I will control it using PWM signal from Atmel’s ATMega
    microcontroller.

    Reply
  7. w2aew
    w2aew says:

    Yes you could, but you would have to be especially careful about loading,
    impedance matching, etc. And, you would most likely need appropriate
    attenuators to bring the power level down to a safe level that will not
    damage the scope or spectrum analyzer (especially the spectrum analyzer)

    Reply

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