Philips FM-828E (E-band) Conversion Mods for 6 metre FM
Created 13th November 2002, updated 14th April, 2005.
Exciter Crystal Oscillators. C2 100pf add 180pf or replace with 270pf C6 Same C11 Same or Add 22pf across L1, L2 & L3 remove 680 ohm across crystal and replace with 1K5 Phase Modulators C19 22pf add 39pf or replace with 68pf C28 Same Divider C45 47pf add 47pf or replace with 100pf C46 Same C44 33pf add 12pf or replace with 47pf C47 Same Tuned Ampl C54 1p8 add 3p3 or replace with 4p7 C55 8p2 add 6p8 or replace with 15pf C61 6p8 add 10pf or replace with 18pf VCO Place 3p3 across L8 Power Amplifier C21 trimmer and C26 in parallel. Add 47pf or replace with 82pf C22 trimmer add 22pf C23 trimmer add 56pf C25 trimmer add 33pf C24 trimmer add 10pf Output harmonic filter Add 2 turns to L1 and L3 Add 1 turn to L2 Receiver Add 8p2 across each RF front end tuned circuit : L1 to L4 Add slugs to oscillator doubler coils : L10 and L11 ------------------------------------------------------------------ E-band Xtal calcs: TX: f(carrier) /8 Philips spec 9681 Type Q16A RX: for a 10.7 MHz IF f(carrier) +10.7 /2 Philips spec 9691 Type Q16A for a 10.8 MHz IF f(carrier) +10.8 /2 Philips spec 9691 Type Q16Avk2kfj's 6m Repeater listings page