BLACK CANYON INDUSTRIAL PARK * 8146 N. 23RD AVENUE
PHOENIX, ARIZONA 85021 * (602) 995-0608
6
W8CXS Revision
Features and Specifications
FEATURES:
1. DUAL VFO’s, INDEPENDENT C O NTROL: Capable of simul aneously receiv-
ing wo sepa ra e frequencies wi hin he same band and rasm i ing on
ei her.
2. 150 WATT OUTPUT from a solid s a e, no une final u ilizing only 50% of
i s 300 Wa ou pu capa b ili y hrough he use of Mo orola
®
RF Power and
Hybrid Linear Am plifier Modules.
3.
SYNTHESIZED HF 160-10M BAND COVERA GE: Addi ional 1 MHz bands
may be added by programming he diode ma rix.
4. UNEQUALED SELECTIVITY from 3 cascaded crys al fil ers, IF shif plus
ac ive audio band pass fil ers and a uneable peak no ch fil er. All add up
o he mos powerful an i-QRM sys e m available oday.
5. ACTIVE DOUBLE BALANCED SILICONIX
®
MIXERS provide a plus 20 dbm,
3rd. order in ercep poin (bes a ainable receiver IMD in an ama eur
band ransceiver.
6. RF SPEECH PROCESSOR. RF envelope clipper plus cascaded 8 pole crys al
fil ers in SSB
7 . LED FREQUENCY READO UT: Six digi , 100 Hz resolu ion display. .43”
charac er he igh ; brigh ness and mul iple colors insure accura e wide
angle in erpre a ion.
8. CW KE YER; INDEPENDENT AG C; QSK-FASTBREAK IN CW; VOX; RIT;
NOISE BLANKER; FULL METERING ..... ALL STANDARD WITH SIGNAL/
ONE
9. POWER SUPPLY (BUILT-IN): Heavy du y HyperSil
®
ape wound rans-
former for excep ional regula ion and power wi h compac size and
weigh .
10. MODULAR CONSTRUCTION u ilizing a mass ermina ion ribbon in ercon-
nec ion 3M
®
sys em for easy circui board accesssabili y.
SIGNAL/ONE MODEL CX-11A SPECIFICATIONS
GENERAL:
1.
Frequency Coverage:
All ama eur bands 1.8 o 30 MHz in full 1 MHz
ranges. An addi ional 1 MHz band may be added in a ny of he four
ranges; 2.0; 4.0:7.0; 8 .0:14.0; and 15.0:21.0 MHz by programming he
diode ma rix for he LSI Digi al PLL Syn hesi zer.
2.
Frequency Control:
T wo iden ical, precision VFO’ s 1 MHz uning range,
50 KHz overlap wi h nominal 25 KHz per knob res olu ion.
3.
Readout:
Accuracy lineari y and rese abili y o 100 HZ a any poin in
any band af er calibra ion agains WWV a 15 MHz. MSI Digi al Fr equency
Coun er, six digi .43” charac er heigh , high brigh ness and mul iple red,
amber and green LED ’s insure accura e wide angle in erpre a ion. Read-
ou upda es 20 imes per second.
4.
Spotting:
Push bu on provides audio bea no e for spo ing wh en using
separa e VFO’s or T ransmi Offse /T ransceive Mode.
5.
T/R Switc hing:
Push- o- alk or fas -a ack VOX; QSK, full break-in CW;
fas key-up receiver recovery independen of AGC decay. Isola ed ermi-
nals for con rol of ex ernal am plifier.
6.
CW Keyer:
Buil -in elec ronic keyer wi h independen speed and weigh
con rol, 5 o 60 wpm. Separa e jacks for keyer paddle and manual key.
7.
Frequency Control Modes:
Transceive wi h ei her VFO, “spli ” using
bo h VFO’s, ransceive on ei her VFO plus independen receive-only on he
o h er, or “Transmi and Receive Offse ” ransceive (Transmi and receive
frequencies rack and may be ins an ly offse up o plus or minus 3 KHz
from receive frequency).
8.
E ission Modes:
SSB, CW, FS K
9.
Power Supply:
Buil -in heavy du y supply for 115/230 vol s, 50 o 400
Hz. Hypersil
®
Transformer for excep ional regula ion and power wi h very
small size and weigh . Co mple ely self pro ec ing - bo h hermal and cur-
ren overload. Requires approxima ely 100 wa s receive, 600 wa s peak
a full inpu .
10.
Construction:
All cri ical circui ry (excep large power supply compo-
nen s) is modular on glass epoxy e ched circui boards u ili zing gold pla ed
socke s and pins for ea sy removal of all ransis ors, in egra ed circui s and
circui boards co nnec ed by a mass ermina i on ribbon cable sys em.
11.
Size and Weight:
16
¼
”W, x 7
¼
”H, x 14” deep overall, less fee. 40
pounds.
RECEIVING SYSTEM:
1.
Active Mixers.
Two Quad J FET Silion ix
®
mixers.
2.
Sensitivity.
Be er han -116 dBm (.25
µ
v) for 10 dB S/N ra io a 10
me ers (2.4 KHz ban dwid h). Ma ched 50 ohm measuremen (10 dB noise
figure).
3.
Selectivity.
S andard SSB - dual ma ched 2.4 kHz 8 pole crys al band-
pass fil ers deliver 16 p ole 1.4:1 sh ape fac or perform ance (6dB /60dB).
4.
Dyna ic Range.
98 dB wi h a 2.4 KHz bandwid h.
5.
Third Order Intercept Point.
Plus 20 dBm based on wo -23 dBm sig-
nals a he an enna connec or, separa ed by 25 kHz, crea ing in ermodula-
ion dis or ion produc s no less han 90 dB below ei her of he in erfacing
signals.
6.
Cross Modulation.
W i h a desired signal grea er han -52 dBm, in a 2.4
kHz bandwid h, an unwan ed si gnal, 30% modul a ed, removed no less
han 25 kHz m us be grea er han pus 2 dBm o produce an ou pu 30 dB
below he ou pu produced by he desired signal.
7.
Co pression.
(Blocking) wi h a desired signal of -52 dBm an unwan ed
signal more han 25 kHz removed mus be grea er han plus 7 dBm o
reduce he ou pu by 3 dB.
8.
Synthesizer Phase Noise.
in 1 Hz ban dwid h, -80 db below carrier.
9.
Post Detection Peak/N otch Filter
wih adjusable frequency noch
dep h and 2.4, 1.5, 1.0, 0.4, 0.1 kHz band wid h selec ivi ies.
10.
Audio Output.
2 wa s.
11.
IF Shift.
Second IF adjus able up o plus or minus 2 kHz wi h respe c o
IF fil er passband for in erference rejec ion and receiver audio passbband
selec ion. T racking error, zero.
12.
Dual Receive.
Two cha nnels usable separa ely or simul aneously, con-
inuously variable rela ive RF gain c on rol. Ei h er channel may be used for
ransceiving and he o her for r eceive-only.
13.
Noise Blanker.
Pre-IF blanker wi h adjus able hreshold.
TRANSMITTING SYSTEM:
1.
Power A plifier.
Soli d s a e, comple el y broad-band driver and final;
wo rugge d, M o orola
®
RF power ransis ors MRF 422, linear power
amplifier conduc ion-coupled o massive ex ruded hea sink. 150 wa s
dissipa ion ra ing a 25 C ambien . Comple e hermal pro ec ion. Pre-
uned bandpass ou pu fil er requires no adjus men . Nominal 50 ohm
ou pu impedan ce will opera e in o any VSWR w i hou dam ager. Driver
and final broadband 1.8 o 30 MHz.
2.
Power Output.
150 wa s CW/PEP ou pu all bands and modes. Ou pu
con inously adjus able down o less han 1 wa .
3.
Inter odulati on Distor tion.
35 dB below each of wo ones a full PEP
ou pu , ypical.
4.
Har onic and Spurious Output.
-65 dB min. Mee s FCC par 97.73
(-40dB plus 10Log of mean power ou pu ).
5.
Carrier and Undesired Sideband Supression.
60 dB minimum.
6.
Speech Processing.
RF envelope clipping plus cascaded 8 pole crys al
fil e rs in SSB. Clipping adjus able 0 o 20 dB nominal.
7.
Metering.
PA curren , PA vol age, clipping, drive, forward and reflec ed
power.
NOTE:
All Signal One Produc s significan ly exceed FCC speci fica ions limi ing spurious
emissions.
Price and specifica ions subjec o change wi hou no ice or obliga ion.
