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Title: HW18 Post by: John K5PRO on July 28, 2008, 01:28:59 PM Going through old stuff in a garage, I found a HW18 SSB transceiver and the manual. Looks like one of the infamous monobanders, this one for 160m, or CAP frequencies. Is this radio useful, convertable to AM for example? it used the same 6GE5 that the HW16 and the other HW22, HW32 monobanders had.
Title: Re: HW18 Post by: w3jn on July 28, 2008, 03:39:47 PM I converted a Heathkit 75 M monobander to AM. Worked fairly well but the receiver was worthless after removing the crystal filter - the IF was at leas 100KC wide. AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
Remove the crystals, bypass the filter stage, feed line level audio to the cathode of the audio cathode follower, unbalance the modulator a bit, and you're done. Make sure you limit the highs on the audio; the thing will fully modulate better than 20 KC if you're not careful what you feed into it. |