Keying Cable Question

Discussion in 'Amateur Radio Amplifiers' started by W9RTB, Nov 10, 2018.

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  1. W9RTB

    W9RTB XML Subscriber QRZ Page

    Just helped a friend bring in a 20amp circuit for his amp as close as I could to the radio shack. He purchased an RM Italy HLA-305 from DXE.
    Everything is set and ready to go.
    He is using an IC-7300. Amp power supply is 50A. He has a remote tuner rate at 600W
    My concern is that his amp is about 15' from shack so the keying cable would be that long.
    I don't think it would present a problem, but just wanted some feedback.
  2. W1QJ

    W1QJ Ham Member QRZ Page

    will probably be ok
  3. K7MH

    K7MH Ham Member QRZ Page

    Why did he buy an amplifier for $730 that will only give him about 200 watts output when he has a 100 watt output rig anyway?
    On the surface there doesn't seem to be much at all gained from it other than a lot of expense.
    KU3X likes this.
  4. WB2WIK

    WB2WIK Premium Subscriber QRZ Page

    Keying cable length shouldn't matter, as the keying line is very low current.

    You could probably go 100 feet with it using #22 gauge zip cord.
  5. W9RTB

    W9RTB XML Subscriber QRZ Page

    Thanks for all the replies.
  6. K0OKS

    K0OKS Premium Subscriber QRZ Page

    At that length you might want some ferrite beads or torroids on the line if you get RF issues, but likely won’t be too much of a problem. With the “keying” circuit. However, it could pickup and cause RF to get into other parts of the rig or amp.
  7. KW4GT

    KW4GT Ham Member QRZ Page

    A bigger issue than that is the amplifier in question is rated to handle a maximum of 15 watts input - it doesn't sound like a good combination.
  8. KP4SX

    KP4SX XML Subscriber QRZ Page

    Well there's that.
    Are we actually talking about ham radio here?

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