[MrFixr55]

I hear you Ron, re not modifying the majestic other than building an adaptor that you can sub for the tube.

Re the AK 35, you don't need a horn, you can use a PM Dynamic and an output xformer from an AA5 radio. Primary impedance of about 2.5K Ohm is about right for a 01A, 112 or 71A.

You can run the AK35 or most other battery TRFs off an old computer power supply for the filaments (from the main +5 Volt Power Supply), and a bank of 9V transistor batteries for the various B+ voltages. 3 AAA cells will work fine for the bias for the 1st AF and Output tubes if using 01A or 112A as an output tube. For more power, use a 112A, 135V for the Audio B+ and -9V bias for the output stage (The 1st AF and Output stages have separate bias connections on the 35) will yield 115mW. For even more power, use a 71A. At 90V B+ you need about -17V bias (yields about 125mW). At 135V B+ you need -27V bias (gets you 375mW). The tube will take 180V B+ but you need -40V bias but you get 700mW of power

Of course If you go through about 5 sets of 9V batteries, you coulda bought an ArbeIII (I finally did).