[Elecraft] Want Pro test/alignment Insts. for K2
phoon.usinet
[email protected]
Thu Jul 24 15:18:02 2003
Tnx to Tom K8LA, Leo DA5LS, Tom N0SS, Earl K6SE, Don W3FPQ and Bob AG5Q all
of whom provided excellent advice on soldering tools and methods.
Another issue: The K2 alignment instructions seem "kludgy".
The K2 is a superior design which deserves the best.
I am not enthusiastic about spending 100 hours (realistic for me) building
the K2, and then being led through potentially "compromised" test and
alignment, when I plan to have quality test equipment on hand to do "Pro"
level testing and alignment.
Have a 50 Mhz dual trace Tech Tronics scope, ARRL 1N34A RF probe, precision
freq counter, DVM, Traditional style Simpson VOM, Heath Audio generator, Oak
Hills Watt meter,and I will borrow an HP "lab" calibrated signal generator
from Mike, AI8Z.
Am completing the Hayward power meter that has super precison across a wide
range of dBm. Have HP 48 GX equasions for expressing power in dBm or
milivolts or miliwatts.
What if my Rcvr Lo output is a mite "low"? What is "low"? How would I know?
Are there instructions for a truly professional alignment of the K2
somewhere using good test equipment?
Also, have the designers published expected AF/RF voltages (or dbm) for
given frequency(s) at:
VCO Input to Rcv mixer?
Lo input to Rcv mixer?
Output from Rcv mixer?
LO input to Tx mixer?
VCO input to Tx mixer?
Output of Tx mixer?
Input to 4.915 Mhz Xtal filter
Output from 4.915 Mhz Xtal filter?
IF amp input?
IF amp output?
Product detector input?
Product detector output?
Pre Driver input?
Driver input?
PA input?
PA output?
For 1000 Hz input, what is expected AF output?
This is not an exhaustive list.
Tnx et 73s,
VE1CHS