KrNews #08 05 марта 1999

Mosaic - Telephone Relay: stream of consciousness spektrumistov.

_


             M O W A K A
_


                              (C) VTS'99


    Well, now there is where the language scratching and 
Claudia podolbat ;-) 


    So there you go ...


    1. I changed the index of the address
and now I am officially a "city of Krasnodar;). Now he is - 
350108. 


    Next by KrNews07.


    2. Vadim (Viper), when I talked about remaking "Krasnodar" 
under Vicomm and mentioned the possible incompatibility

was meant as follows.

    Prog written specifically for the normal operation of the 
"Krasnodar", under the Amstrad'ovskoe location of the brake

pages - this can be seen very
rare (most people spit on the separate fields of memory). Now 
we will remake a complex map of Sinclair 128, and where there 
should have been quick pages will be slow. That bugs. There the 
same place where ignored the separate field altogether, all 
will remain the same (that is Brake and bugs).



    And yet, Vadim, Kempston joystick is not working properly: 
confused left and right, up and down and fire does not apply in 
daylight (although the menu works). 

    And the reason is, I think, lies as much in the book 
"ZX-Spectrum 'TR-DOS ...", because I'm here Now look at the 
scheme KAY'a and everything is fine I see. I opened my book ... 
A I have long to fix it;)



    3. Maks, priiveet;).


    No, well, if mistakes for fun - then
and had to write. Or do you want to pin on us?

    A certain percentage of error is always (and us), because 
no one pays us for meticulously editing

texts (maybe even GOST'y dig).
Spend the same on this extra time nobody
hunting, the more there are other important cases, including on 
the Spectrum (I personally Time is never enough). Another thing

- Write once correctly (on a subconscious level), following some
simple text formatting rules (about
which is not once mentioned Vadim), and then
reread the text once or twice for
correction ochepyatok.

    About kempstone joystick - it's too
funny;). That you're holding it wrong, it must be rotated 180 
degrees, and even better - to make an analog trackball, but 
without this very bola (flip the joystick up belly) and steer 
once with both hands. ;-) 

    And finally: "Do not sit for a long time before
computer ". I do not understand what you meant, but from the 
Spectrum is still no crazy. ;-)



    4. KR1818VG93 ...


    I was thinking about vegeshkah ... Burn
they are very often people, and produce
them especially for us, no one is going to ... And stocks, 
sooner or later end ;-( Maybe I'm certainly behind the curve, 
but the dollar after the jump, etc. circumstances they have 
become very cost smaller p 20-25. And, in some places require 
30-40R. I have not yet beat anxiety, but there AY'shka already 
a shortage, although the lights are much less likely ... 

    Of course, from the SH, we did not get off for a long time, 
but it's time to think about its replacement. Here you are, and 
1.44 and 2.88, and the screw, etc. Once all this is possible 
under resp. OSes - ISDOS, for example ... 

    And for this it is necessary for all but the
software to write. With what a Leont'ev never cope. Of course, 
there are dark places in isdose, but they describe no one will 
be if you do not see the interest in the system ... And kodit 
system will bend much easier (only Here XAS + STS would be ;-)).



    5. Well, now about ferrum'e.


    Serega, KrNews read many where
so it's best not to put their copyrights
anywhere (you're a reprinted article
from the book, although it indicated). I personally
from this either warm or cold, but other
can not really like it.


    In general, the lack of such literature - in the absence of 
descriptions of settings devices. So it does not say, but

RF-generator is not a flasher in LA3, and
I remember it for their own suffering. Especially since there 
are errors in the scheme. For example, C1 and C6 in the idea 
should not be 10pF and 10nF (ie 0.01mkF, and even better

- 0.1mkF).

    I'll try to tell a little about how to configure, although 
themselves Spy stuff "I do not have. It takes the usual

tester (as will behave Chinese
Multimeters I have no idea) and, preferably, the RF detector 
head (see below). Will be described in an approximate way 
settings (I'm writing purely out of my head;)). 


    And now in order.


    1) Actually, he "Telephone repeater" refers to a not very 
successful design because of idiotic connection to the line 
(too me, the spies). Not that seamlessly cut into the line

problematic, since even a resistor of 680 ohms
punched ... Not all domestic exchanges is like ... Ie obtain 
explicit symptoms: loss of signal

reception and transmission; fuzzy (if at all
possible) a set of numbers, different bugs
(Depends on the wealth of fantasy PBX;)).
It would be better to engage in parallel lines. If you can not 
reduce consumption in stand by to leak, so you can try to 
supply power to the variable component of the voltage during 
the conversation. And modulation itself obtain (for

appropriate way), albeit mixed (AM-FM).


    2) Now about these reels. Accepted
the following:


    Sk = 4 ... 15pF, Ck.sr = 10pF

    Fa = 70MGts (FM1)

    Fb = 100MHz (FM2)


      The required inductance is:



         L = 25330 / ((F ^ 2) * C)

L - uH;
F - MHz;
C - pF.


    La = 25330 / ((70 ^ 2) * 10) = 0.517mkGn

    Lb = 0.253mkGn

Number of turns:



       N = SQR (5 * L * (9 * D +20 * A)) / D



    N - number of turns;

    L - required inductance of the coil;

    D - diameter of the coil (diameter of the mandrel
plus one wire diameter), cm;

    A - length of the winding, see


                 N


       D



               <-A->


    We take A = 1 cm, D = 0.75sm (7mm Mandrel,
wire 0.5 mm).


    Na = 8 vit.

    Nb = 6 vit.


    Tuning circuit in frequency is carried out, in addition to 
the trimmer (podstr. cond.) compression and stretching of the 
coil. 


    Coil connection with an antenna - 2-3 Vit.


    3) Setting up of permanent
current generator.


    Turn on the tester in the measurement mode
DC at the limit of 5-10mA in
chain collector of the transistor.


  + Pit


                    +

              x O mA

   R5 * -


                ) Specifies

           C5) L1 <-circuit

                ) Generator

         VT1

             /

             >



    Selection of resistors R5 exhibited current
reservoir of about 1-2mA.


    Check for the generation of very
just-closed loop circuit. Current
collector has to change.


    4) Now for setting up the regime of alternating current. If 
the tilt deep theory and continue to do

"Just to work properly, then there
need to configure the generator to the max power output. Why do 
we need RF-head. Because special accuracy is not needed (it is 
only important to find the maximum), we take denominations 'of 
the bulldozer' (although in general it is necessary to 
calibrate the instrument to the exemplary, matching resistor).



       C1 R1

       A 0.01-4.7k

   Rf