RECEIVER: XTAL freq = (Operating freq + 10.7 MHz) / 2 Remove and bypass the receiver input filter. Change C1 to 33pF (polystyrene) Change C6 to 39pF (polystyrene) Change C8 to 39pF (polystyrene) Adjust slugs in TR1, TR2, L1 & L2 flush with top of formers Adjust slugs in L3 & TR3 to protrude 3mm above formers With voltmeter on TP1 & 2 adjust TR2, L3 & TR3 for maximum (0.1 volt typical) Apply a signal to receiver and adjust TR1, L1 & L2 for maximum signal (mute should open @ -120dbm or .22 uV) TRANSMITTER: XTAL freq = Operating freq / 18 Change last tripler stage (VT7) to a doubler by adding 47pF across L6 and 47pF across C55 (polystyrene capacitors) Peak up exciter for maximum RF out (40mW approx) PA STAGE: Remove L1, ( Do NOT DISCARD ) Rewind L1 using wire of the same guage. 12 turns on 5mm dia. Remove L4 and discard. replace with coil taken from L1 Rewind L7. 6 turns of 1.5mm wire at 6mm dia. close spaced (N.B. may need 7 turns) Rewind L11 & L12. 8 turns of 1.5mm wire at 6mm dia. close spaced Rewind L16, 6 turns of 1.8mm wire at 6mm dia. set C2, C3, C6 at half meshed set C12 at one third meshed ANTENNA FILTER: Remove filter and unsolder lid Remove ALL coils and rewind using 1mm wire L3 & L4 10 turns at 5mm dia. close spaced L2 & L5 9 turns at 5mm dia. close spaced L1 & L6 7 turns at 5mm dia. close spaced Tune PA for maximum RF output (40 watts approx) Thanks go to Laurence Adney VK2ZLA for this information. See you on six. (52.525 MHz) 73 de Dave VK2GHZ @ VK2RWI.nsw.aus.oc