http://www.oocities.org/va3ttn/Compr.zip
DSP Speech Compressor 1,547,300
bytes
http://www.oocities.org/va3ttn/Tant.zip
Antenna Temperature & G/T v1.2 11,882 bytes
http://www.oocities.org/va3ttn/OrionNR1.373b5.zip
Orion I NR Testing
454,743 bytes
http://www.oocities.org/va3ttn/SWRloss.pdf
TL Loss due to SWR
71,563 bytes
http://www.oocities.org/va3ttn/UsingOrionRX.pdf
Using Orion's receiver
43,638 bytes
An "ordinary" choke has multiple
alternating parallel and series resonances.
Parallel resonances are
displayed as dips, and series resonances as peaks.
http://www.oocities.org/va3ttn/YT6A-choke-1.jpg
Picture of YT6A's HF amp choke 69,259 bytes
http://www.oocities.org/va3ttn/YT6A-choke-2.jpg
Choke impedance sweep
69,861 bytes
* * *
http://www.oocities.org/va3ttn/wpxssbbg.pdf
Prognoza prilika za WPX SSB 108,293 bytes
http://www.oocities.org/va3ttn/Kup.zip
Kup
http://www.oocities.org/va3ttn/CQ.wav CQ 180 zn/min, 880 Hz, 1 ms 11,067 bytes
http://www.oocities.org/va3ttn/ref.wav
referentni nivo + 0 dB 160,490 bytes
http://www.oocities.org/va3ttn/refplus1db.wav
referentni nivo + 1 dB 160,490 bytes
http://www.oocities.org/va3ttn/snimak3.mp3 Grletov snimak 358,922 bytes
Uporedjenje signala YT9X
i YT1NT na 21 MHz
za vreme ARRL DX SSB, 02.03.2003
oko 14:30 UTC.
YT9X: 800 W,
4 el. QUAD (visina ?), na brdu visine 800 m, pored Sevojna
YT1NT: 1250 W, dipol na
14 m iznad zemlje, na terasi, 3 m od zgrade, na periferiji Nisa.
YT1NT nije radio u contestu, vec samo zvao CQ 15 i radio obicne veze.
Snimio Grle VE3EY u Torontu
na FT1000MP, AGC iskljucen.
Jedan VFO podesen na YT9X,
drugi na YT1NT.
Za vreme snimanja naizmenicno
prebacivano sa jednog VFOa na drugi.
Iz oscilograma signala se
vidi da je signal YT9X prosecno jaci za oko 4 dB u vrhovima govora.
Posto je YT1NT TX bio jaci
za 2 dB, sledi da je kombinacija lokacije i antene YT9X
bila bolja u ovoj probi
za oko 6 dB od lokacije i antene YT1NT.
Kompresija dinamike govora
je bila znacajno bolja kod YT1NT.
Efektivna razlika je cesto
veca od razlike u jacini signala,
i tada signal YT1NT, iako
slabiji u vrhu, zvuci jednako ili glasnije od YT9X.
http://www.oocities.org/va3ttn/snimak1.mp3
snimak YT1NT i YZ1AU 176,797 bytes
http://www.oocities.org/va3ttn/snimak2.mp3
snimak YT1NT i VE3EY 299,050 bytes