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    president HR2510 high swr spikes

    i have a president hr2510 am and fm seem to work ok i get a little over 10 watts on my mfj 941e tuner meter. but on ssb on a dummy load as soon as i speak into the mic the power goes out but the audio cuts out(on another radio i'm using to monitor it) but when hooked to a antenna on ssb whenever...
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    robyn 510d no tx low rx on lsb

    i have a robyn 510d am and usb seem to work like they should but when i switch to lsb it will work one second and the next it wont the rx seems to dim down a little and when it does there is no tx or very little but when the rx comes back im getting almost 20 watts same as usb am gets a little...