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Icom 718 modifications

Discussion in 'The Low Bands - 630/2200 Meters - VLF' started by N0DZQ, Oct 5, 2018.

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  1. N0DZQ

    N0DZQ Ham Member QRZ Page

    I was wondering if anyone has been successful in modifying an Icom 718 to transmit on 630 meters?

    Thanks in advance for any information!
  2. K8JD

    K8JD Ham Member QRZ Page

    A transverter makes more sense than building filters for 630M and try jamming them inside the 718 !
  3. WB5WPA

    WB5WPA Ham Member QRZ Page

    One filter, outside the rig, A lowpass filter, killing the second and third, etc. harmonic is really all that should be necessary.

    I threw one together for my Icom, to knock harmonic energy down ... PLUS, my antenna (a tuned vertical loop) is resonant at 475 kHz, further attenuating any harmonic content.
  4. WB5WPA

    WB5WPA Ham Member QRZ Page

    Some of the earlier 706MK2 would. Don't know about the 718. The G 706 didn't seem very happy at all and wouldn't do above a couple watts at 475 kHz.

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