Sommerkamp TS-680EDX, Инструкция по эксплуатации

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GENERAL DESCRIPTION
Your
S O M M E R K AM P T S -6 8 0 E D X
transceiver has been désignée! for continous
heavy duty mobile and base Station application.
I t can be o p e ra te d w ith a m ic ro p h o n e and in te rn a l speaker o r handset, s p e a k e r/
m icro p h o n e c o m b in a tio n , te le p h o n e s e t in c o rp o ra tin g a u to m a tic v o ic e o p e ra te d
tr a n s m it/r e c e iv e s w itc h in g , e x te rn a l s é le c tiv e c a llin g w ith a u to m a tic a n s w e r­
back and m any m ore.
GENERAL
The tra n s c e iv e r is desig n e d to o p e r a te fr o m 13.8 V o lt DC p o w e rsu p p ly as a
base o r m o b ile s ta tio n . It's s tra g h t fo rw a rd 8 0 channel c a p a b ility a llo w s i t to
o p e ra te on any channel w ith in 2 6 .9 6 5 and 27.855 MHz.
RECEIVER SECTION
The re c e iv e r s e c tio n is designed to re c e iv e a m p litu d e m o d u la te d (A M /A 3 )
s ig n a is in th e 2 6 .9 6 5 to 27.855 M HZ. (11 m e te r) c itiz e n s band .
The unique c o m b in a tio n o f lo w no ise F ie ld E ffe c t T ra n s is to r (F E T ), double
co n ve rsio n , a c o m b in a tio n o f m e c h a n ic a l c e ra m ic , and L /C f ilt e r s , f u lly a u to ­
m a tic n oise lim it e r (A N L) and a h if i q u a lity speaker a m p lifie r w ill g iv e you
e x c e p tio n a l ré c e p tio n q u a lity in th is fin e p ie c e o f e q u ip m e n t.
In a d d itio n , th e above c o m b in a tio n o f th e la te s t te c h n o lo g y p ro v id e s you w ith
a s e n s it iv ity and unw anted s ig n a l r e je c tio n and n o ise s u p p re ssio n a v a ila b le
p re v io u s ly o n ly in space and m ilit a r y c o m m u n ic a tio n e q u ip m e n t.
The pow er s u p p ly o f th e re c e iv e r RF. IF. and o s c illa to r s e c tio n is s ta b iliz e d
by an e x tre m e sh a rp c u t- o ff Z e n e r diode to o b ta in th e high s e n s it iv ity and
u n w a n te d s ig n a l re je c tio n . The f u lly a u to m a tic s é rié s g â te n oise lim ite r , w h ich
v ir t u a liy c u ts o f f th e au d io o u tp u t d u rin g ig n itio n no ise puises, is d e fe a ta b ie
to m ake even th e w e a k e s t s ig n a l a u d ib le w h ic h o th e rw is e w ould be e u t o f f
by th e th re s h o ld le v e l o f th e A N L s w itc h in g diode.
The high sq u e lch s e n s it iv ity is a ch ie ve d by u s in g a se p e ra te sq u e lch d e te c to r
and s w itc h in g c ir c u it w ith a c a re fu lly balanced h y s té ré s is . The tra n s -
fo rm e rle s s h if i q u a lity au d io pow er a m p lifie r w ill d riv e any load betw een 8
ohm s and in d e fin in ite such as in te rn a i sp e a ke r o r e x te rn a l s p e a ke r/m icro p h o n e
o r h e adset c o m b in a tio n s h a vin g th e above im pédances.
The m e te r in d ic a te s th e fie ld s tre n g th d u rin g ré c e p tio n o f a s ig n a l.
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