A 1269 mhz transmit converter with 70cm if input by bertrand zauhar, ve2 zaz email: board such as the kk7 b 540 580 mhz lo design, which was manufactured by
The kk7 b transverter has a 1296 mhz if, probably because of the difficulty of reproducibly making a sharp filter or any other high q circuit on
A multimode phasing exciter for 1 to 500 mhz in january, qstintroduced you to r2, a single signal direct conversion receiver for the '90s. this month meet t 2, a
A power meter based on the ad 8307 from analog devices. (kk7 b logged over a dozen countries with a crystal set from the upper peninsula of michigan.)
44 march 1999 i built this little receiver to illustrate an idea that i’ve been exploring for a number of years. it replaces the narrow filters and inteference fight
Coherent cw is a communications mode based on precise code timing and frequency stability to provide campbell, kk7 b design for two main reasons.
April 17, 1999 c:\myfiles\manuals\kk7b\binaural rx\construction construction notes kk7 b binaural receiver check to be sure all the parts that are in the
Utilize the original kk7 b 500 mhz lo with a few modifications to the transverter but the use of this particular kit and instructions would be invalid.
Designing and building transistor linear power amplifiers rick campbell, kk7 b 1 notes appear at the end of the article
The tayloe detector outputs i and q audio directly to the r2 pro’s “analog signal processor”, as rick kk7 b calls it :o).
Experimental methods in rf design wes hayward, w7 zoi, rick campbell, kk7 b, and bob larkin, w7 pua explore wide dynamic range, low distortion radio equipment, the use
Field day 2008 wes hayward, w7zoi. kk7 b. rick went with us to this place several years ago, shortly after he moved to oregon. a couple of hours
The author appreciates the efforts of all of those who contributed, including n6 lf, kk7 b, ai8 z, w0 rw, w5 or, w5 ghz, kn8 azn, wb8 ili, kn1 h, w1 xp, aa1 a, kl7 uw, kl7 q,
Rick campbell kk7 b. portland state university electronic component rick campbell 15 mar 2009 h1 7 mhz 50 ohm quadrature hybrid: 18 turns biﬁlar on t37 2
By rick campbell, kk7 b department of electrical engineering michigan technological un~versity houghton, mi 49931 d irect conversion receivers are capa
Rick campbell, kk7 b: and others, the x band ( eo ghz) pans need to be tuned up preferably with a spectmrn analyzer [hat works through ghz.' to give
A 10 ghz ssb/cw part 1— narrowband io ghz operation— transverters developed by kk7 b and wa8 nlc, including versions for 903, 2304, 3456 and 5760 mhz.
April 17, 1999 c:\myfiles\manuals\kk7b\binaural rx\intro kanga us 3521 spring lake drive findlay, oh 45840 419 423 4604 kanga@
Lake county ham radio journal april 2009 the official newsletter of w9 wlc n9 uhf rick campbell, kk7 b, and bob larkin, w7 pua,
Kk7 b did something similar in the classic binaural receiver, using a 1 k pot at the input. i use 6 d b steps because that’s one s unit on my s meter.
Using old kk7 b no tune transverter approach. w5 hn north texas microwave society ntms 11 w5 lua 902 mhz atf 36077 lna reference avago ap note 1128. w5 hn
Rick campbell, kk7 b's dc receivers and complementary transmitter designs were published in qst and have been available in kit form through kanga us.
Schematic kk7 b micro r2 receiver using the si570 p pll this schematic shows the si570 lo and a qsd (1) with a kk7 b micro r2 (3) lna and audio processing section.
Q) § em comm in focus: o w~ the well oiled baltimore county >~ auxiliary communications service " 0 . q) ~ he september 2009 public service column,
Evolution of 40 meter cw transceiver • r1 high performance direct conversion receiver • rockmite 40 –performance left something to be desired
Pioneers in the field of dsp for amateur radio: rob frohne kl7 na, lyle johnson kk7 p, rick campbell kk7 b and others. the handbooks from the arrl and rsgb, as
Kk7 b . board with the addition of power amplifiers and a low noise preamp. note. add bypass capacllors and le rrl le beads on all wires
Several years had past since prof. rick campbell, kk7 b’s qrp lecture (held here before i was a ham), but his “let’s do a d b count” analogy with his wiggling
Transmitter and receiver architecture optimized for qrp operation by: david turner ai5 ee “knowledge unencumbered by experience.”
Vhf experiments or “putting the tech back on the technician bands” rick campbell kk7 b note page numbers for questions 1
Rick campbell kk7 b 30 mar 2009. rcx2 144 mhz to 7 mhz receive converter parts list rick campbell 9/20/09 c1 15 p f pc mount air variable
Wd2xsh/20 kk7b 00 jul 149 wd2xsh/20 ws7n 21 jul 108 we2xgr/2 wd2xsh/17 22 sep 121 psk 31/pskfec 31 we2xgr/2 we2xgr/1 18 sep