Peter, Yes, I have done it - Instructions for adding 160 and 80 meters to a 2 band module on the K1 follow:
Not quite a full "Elecraft" 160m & 80m board, but you can do it this way - order a 2 band board for 80m and any other band, PLUS, order the following components (Elecraft has them all except the crystal) - here are the instructions for how I did it: -- maybe you can make a deal with someone at Elecraft to ship a ''1 band board and the other needed parts" I ordered the following from Elecraft: Capacitors: 2 - E530002 1500 pf capacitor 3 - E530003 2700 pf capacitor 2 - E530005 1200 pf capacitor 2 - E530035 1800 pf capacitor 2 - E530052 560 pf capacitor 2 - E530053 680 pf capacitor 1 - E530058 12 pf capacitor Inductors: 1 - E690007 33 uh inductor 2 - E690001 4.7 uh variable inductor (wide tuning slot) Toroid cores: 2 - E680001 T44-1 or T50-1 toroid cores (blue color) I also ordered a 9.800 mHz crystal (HC-49 case 20 pf load capacitance) from International Crystal Manufacturing www.icmfg.com. If you are planning to use the K1 ATU with this board, you should also order the P1 (3 pin) and P2 (10 pin - 5 x 2) headers from Elecraft. The parts from Elecraft (without the headers) were less than $15 and the crystal was priced at $17.95 - not an unreasonable price IMHO. I assembled the 2 band board with the 80 meter components in the band 2 locations as indicated in the instructions - except for L5 and L6 were left empty at this time. Next, the low- pass toroids were wound with 21 turns (20 inches of wire) on the T50-1 (blue) cores, and soldered into the L9 and L10 positions. The 4.7 uH variable inductors were soldered in the positions for L5 and L6. On the bottom of the board, 1200 pf capacitors were soldered across L5 and L6 (the outer pins on the side of the can with 3 pins). The 33 uH inductor goes into the position marked for C13. Form the leads under the inductor body so that the leads fit into the holes - my inductor is parallel with the board and tucked between the bandpass filter cans. Mount the 9.8 mHz crystal at the X1 position and solder the grounding wire to the side of the can (or top if you prefer). The remaining capacitors are fitted into the following positions: C1 & C5 - 680 pf C2 & C4 - 2700 pf C3 - 12 pf C11 & C15 - 1800 pf C12 & C14 - 560 pf C21 & C23 - 1500 pf C22 - 2700 pf You should now have all the holes filled, and can proceed to align the 2 band board following the instructions in the K1 manual. Mine came up with no trouble at all. 73, Don W3FPR > -----Original Message----- > > as I have chance to buy K1-4 and I am 160m enthusiast I am > thinking about possibility to add 160m band filter module to K1. > Does somebody thought about it already or even added 160m > successfully please? Is there any system problem to add this band? 11> > Thank You for tips nor tricks, > > 73, > > OK1RP > Petr Ouředník > 00420608230010 (private) > [EMAIL PROTECTED] > www.qsl.net/ok1rp > _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
