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Yaesu FT991A Keyline Problem

Discussion in 'Amateur Radio Equipment Reviews' started by KC0JBZ, Apr 1, 2018.

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  1. KC0JBZ

    KC0JBZ Ham Member QRZ Page

    Has anyone had an issue with the amp keyline not releasing the amp back to full receive mode? I connect my 991A from the LIN/TUN jack with the proper cable and connect to the key jack on my Alpha 9500 I lose the receive when I put the amp in "operate" mode. As soon as I put the amp in "standby" or unplug the keyline my receive returns. Service manual doesn't show a TX/RX relay but a switching transistor and diode. What a poor design! I love the radio but now it's junk. It works fine without an amp but when you spend thousands on an Alpha I'd like to use it. The radio is fourteen months old so it's out of warranty and I assume it'll take many weeks to get repaired... how pitiful!
  2. KM4FVI

    KM4FVI Platinum Subscriber Platinum Subscriber QRZ Page

    They come with a 3 year warranty!
  3. N8VIL

    N8VIL Ham Member QRZ Page

    Possible polarity of the keyline to the amp reversed. Just a thought.

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