Advertisement
Be sure you have read the values correctly. Sort all the capacitors out before you
start assembling them onto the modules. They are difficult to remove and correct.
40M
[ ] L1 – 8.2 uH – Gray-red-gold-gold, last band can be silver
[ ] C26 – not used
[ ] C27 – 22 pfd – marked 22, it may be followed by a letter
[ ] C28 – 22 pfd – marked 22, it may be followed by a letter
[ ] C29 – 330 pfd – marked 331
[ ] C30 – 680 pfd – marked 681
[ ] C31 – 68 pfd – marked 68, it may be followed by a letter, (don't mix up the 681 and 68 values!)
[ ] C32 – 330 pfd – marked 331
[ ] L2 – 20 turns on T37-2 RED core – make sure turns are snug to the core and more or less evenly
spaced around the core. Loose winding does not work well.
[ ] L3 – 18 turns on T37-2 RED core
[ ] X1 – 7.074 MHz crystal
30M
[ ] L1 – 3.9 uH – Orange-white-gold-gold, last band can be silver
[ ] C26 – not used
[ ] C27 – 22 pfd – marked 22, it may be followed by a letter
[ ] C28 – 22 pfd – marked 22, it may be followed by a letter
[ ] C29 – 220 pfd – marked 221
[ ] C30 – 560 pfd – marked 561
[ ] C31 – 47 pfd – marked 47, it may be followed by a letter
[ ] C32 – 220 pfd – marked 221, (don't mix up the 221 and 22 values!)
[ ] L2 – 18 turns on T37-2 RED core – make sure turns are snug to the core and more or less evenly
spaced around the core. Loose winding does not work well.
[ ] L3 – 13 turns on T37-2 RED core
[ ] X1 – 10.136 MHz crystal
20M
[ ] L1 – 2.2 uH – Red-red-gold-gold, last band can be silver
[ ] C26 – not used
[ ] C27 – 22 pfd – marked 22, it may be followed by a letter
[ ] C28 – 22 pfd – marked 22, it may be followed by a letter
[ ] C29 – 150 pfd – marked 151
[ ] C30 – 330 pfd – marked 331
[ ] C31 – 33 pfd – marked 33, it may be followed by a letter (don't mix up the 331 and 33 values!)
[ ] C32 – 150 pfd – marked 151
[ ] L2 – 17 turns on T37-6 YELLOW core – make sure turns are snug to the core and more or less
evenly spaced around the core. Loose winding does not work well.
[ ] L3 – 15 turns on T37-6 YELLOW core
[ ] X1 – 14.074 MHz crystal
Page 7 of 13
digital_txcvr_assembly_030720.pdf
Advertisement
