Uniden PC-122XL + RR HF VFO (DDS) for Gareth in UK - 30-05-24

Back ground music during video photos by   / raykostiainenmusic   Feel free to give my music page a like :)
Full photo album and service report here:

Chapters:
0:00 Intro,
0:13 On air demo with David 638 in QLD,
3:03 Modulation demo to Kenwood TS-440,
4:34 RR HF VFO (DDS) RX / SWL'ing demo,
10:59 TX band spread demo,
12:31 Photos (Music by: http://www.raykostiainen.com/ ).

This neat Uniden PC-122XL Gareth in United Kingdom came in for RR HF VFO (DDS) installation and full alignment.

Into the points below...

INSTALLED: ([XTAL: PTC Clip On HC-49 Crystal Heater 40 °C @ X2 10.6975 MHz XTAL, ], [TX LIGHT: Diffused 3 mm Bright White LED + Ω, ], ),
SPRAY CLEANED: (Cases, Chassis, Screws, ),
LUBRICATED: (All rotating controls, ),
DeoxIT F5: (Potentiometers, ),
DeoxIT D5: (Switches, Channel block, Mic PTT, ),
CLEANED: (Front assembly, faceplate, knobs, ),
TIGHTENED: (All screws and nuts, ),
HEAT-SHRINK: (Speaker terminal lugs / leads, ).

ALIGNMENT: (
VCO VOLTAGE = NA,
Si53531 BPF OUTPUT = Peaked @ CH 55 Vp 452.0 mV,
PLL DOWN MIX = NA,
Si5351 REF OSC [SOFTWARE] + CAR/BFO OSC = Aligned @ AVG ~35.6 °C after 1 ½ hour warm up,
CARRIER BLEED = Aligned minimum,
BIAS DRV = Aligned 29.9 mA / 664 mV,
BIAS FIN = Aligned 73.5 mA / 648 mV,
TX COILS = Peaked CH 55 & balanced across 1.5 MHz B/W,
ALC = Aligned ~12 W,
AM RF PWR = Aligned ~4 W,
AMC = Aligned ~90%,
54 MHz / 2nd HARMONIC = Checked @ ~46.8 dB below fundamental,
RX COILS = SINAD peaked CH 55 & balanced across 1.5 MHz B/W,
SSB RX = ~11.2 dB SINAD @ 0.222 uV 1 kHz offset,
AM RX = ~10.4 dB SINAD @ 0.598 uV 1 kHz 30% MOD,
ANL/NB = Peaked / aligned,
SQUELCH = Aligned,
S-METER S9 + AM = Aligned, ).

RADIO CHECK: (David 638, and Jeff 151 ).

Received excellent on air reports from local operators David 628 and Jeffrey 151 across all modes and has great receive! Job done and ready to head back to Gareth for on air time :)

Music during work bench photos in video by http://www.raykostiainen.com/

(PB-062AA)
(uPD2824)
85001120

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