CXEMA_SV.ZIP [1/1]

Tue 15 Jun 1999 Kirill Frolov wrote to you here:

KF> Momed diagram for the spectrum. It's called Vicomm.

I looked at it, I liked it.
But we made it very simple and use it.
Like this:
VICOMM MODEM
──────────────────────────
in. <─────┐
V ->
VD1 ┬ ->
│1
V ->
V1.1 ┬ ->
│2 Tr.
GND <─────┼──┬────┐ ┌───────┬───────┐
VD2│ │VD3 ) · ( █ R3 │ VD4-VD7
V ┴ ) · ( -> │ V1.2 / \
┬ ^ ) · ( -> / 5 / \ S1 /
│ │ ) · ( ┌──Є ┌─ \ ^ /────/ ─────0
out.<─────┴──┴────┘ │ │ 6 \ 4 │ \ / to telephone
R1 █ █ │ │ │ line
└──┴────┴───────┘
Here: R2 └──────────────────0

V1 - optocoupler AOT127B (A) or AOT128B (A)
VD1 - LED AL307V
VD2, VD3 - KD521 or KD522
VD4-VD7 - assembly KTs407A or 4 diodes KD209
R1 - 270 Ohm
R2 - 82 kOhm - 100 kOhm
R3 - 750 Ohm - 1.2 kOhm
Tr. - Take any small-sized transformer from
receiver. get 2 windings of approximately 500-700 turns of wire with a diameter of 0.1 -
0.12 mm. The iron is assembled “end-to-end with a gap”.The gasket is ordinary thin paper.

Connecting it requires intervention in the computer circuit: the signal must be supplied to the input of this modem directly from the output of the register (usually TM9, in Quantor it is the 5th leg of D31), bypassing the resistor divider of the tape recorder output. The output of the modem is fed directly to the tape input
of the computer.

Notes:
1. The local computer "Quantor" has a very decent comparator on 554CA3, so
no additional ones are required.
2. if you are not too lazy to start +5V, then it is advisable to do part of the circuit like this:

+5V <─███────┐
V ->
VD1 ┬ ->
│1
V ->
V1.1 ┬ ->
│2
input. <───────┘

All the best.
Sincerely, Roman.

RM> I looked, I liked it.
RM> But we made it very simplified and use it.
RM> Like this:
RM> VICOMM MODEM

I’ll cut it out and save it...

By the way, there is a point in finalizing the circuit:

WRITE 0 WRITE 1 READ 0 READ 1
Bit 5, port FE: Pipe on | raised Ringing now | no call.

Where can vicomm _NOW_ be used? :-/ Khaes are already cheaper than XTRs
for a long time...

Kirill Frolov. [ZX]

One day, Monday June 21, 1999 03:05, Kirill Frolov wrote to Roman Milukov:

KF> And where can vicomm _NOW_ be used? :-/ Khaes are already cheaper
KF> XTRs for a long time...

on Mazda lines and slop ATS, the travel vicomm will give a hundred points to any haes
...

With best wishes, Artur. [ZX]

KF> By the way, it makes sense to modify the circuit:

KF> WRITE 0 WRITE 1 READ 0 READ 1
KF> Bit 5, port FE: The pipe is in | raised Ringing now | no call.

Yes. A gadget.
Of course, whoever wants it, makes it for himself!

2All: I can throw his diagram here by *MAS*. But, it seems, it is quite widespread.

KF> And where can vicomm _NOW_ be used? :-/ Khaes are already cheaper than XTRs
KF> for a long time...

Well, but we are still basting cabbage soup here...
Vicomm is used by those who do not want to spend money on haes, but make it themselves.
And XTR is not a competitor to it, in this sense.

KF>> XTRs have been around for a long time...

AI> on Mazda lines and slop ATS, the travel vicomm will give a hundred points
AI> will give any haes...

No big deal! It also happens the other way around. Here everything
depends on the specifics of distortion/interference.

Kirill Frolov. [ZX]

In 464 this is not the case. A smart person set up the wicoms.
Drawdown of the 15V line. Modulation 90% (parallel telephone screams throughout the entire apartment if you pick up the phone). And the connection is shit :(
Maybe you can send me a diagram of your travel route.

Sincerely, Yura DOORSFAN
[ZX] [DOORS] [BLACK SABBATH]

KF> Wow! It also happens the other way around. Here everything
KF> depends on the specifics of distortion/interference.

By the way, yes, for example, HST cannot be defeated, but it is not always cost-effective due to the price
of modems that have it. And in terms of price/performance, the above is quite
possible.

Regards, Alex from FFC COMPUTERS.

>E-MAIL: asde...@softhome.net ICQ: #13064553

YY> In 464 this is not the case. The wicoms were set up by a smart person.
YY> Drawdown of the 15V line. Modulation is 90% (the parallel telephone screams throughout the entire
YY> apartment if you pick up the phone). And the connection is crap :(

Maybe a crappy transformer, a comparator...
We needed it - they set it up for a crappy line.

YY> Maybe you can send me a diagram of your travel device.

I’m warning you right away - you can’t do it without a transformator.

Kirill Frolov. [ZX]

KF> I warn you right away - you can’t do it without a transformator.

you can, you can ;)

All the best.
Dmitry.

... LD..X-TRADE... [ZX]

DL> you can, you can ;)

Then no computer, no phone... Or are you talking about XTR? After all, it doesn’t work on quanta
because of this.

Kirill Frolov. [ZX]

KF> I’m warning you right away - you can’t do it without a transformator.

With a trance, and a small, branded one, the local signalman who did the momeds was very complimentary. And again - the proof confirms its quality.
But still - continuous repetitions, including on Pentagons.
Question to the specialists: which comparator is the best for Wicomm (obviously not on CMOS
inverters). Maybe there is a proven scheme?

YY>>> Drawdown of the 15V line. Modulation is 90% (the parallel telephone screams throughout the entire
YY>>apartment if you pick up the phone). And the connection is crap :(
YY>>> Maybe you can send me a diagram of your travel route.

07 Jul 99 18:14, Yura Yakimuk wrote to Kirill Frolov:

YY> With a trance, and a small, proprietary one, the local signalman, who
YY> did the momeds, was very praised. And again - the proof confirms
YY> its quality. But all the same - continuous repetitions, including on
YY> pentagons.

And without a resolution it is IMPOSSIBLE. Well, if you want to burn everything that is possible for yourself -
connect. But don’t advise it to others.

YY> Question to the experts: which comparator is the best for Wicomm (obviously not on
YY> CMOS inverters). Maybe there is a proven circuit?

It has been tested for a long time - on almost any op-amp it is better than on the 561LH2.
The simplest thing - look at the circuit from 48 spectrum (140UD2 and 553CA3?).

Kirill Frolov. [ZX]

DL>> it is possible, it is possible ;)

YY> If the power supply is not pulsed.

Once again - NOT possible. If you don’t know, then don’t write something like that here.

DL meant his XTR, where the decoupling is made using optocouplers. This is more complicated
and often similar than using a transformer. There is only one advantage - there is no
huge capacity between the computer case and the telephone line (this is
a bad transformer).

2All: I do not recommend connecting directly with any power supply.
Especially computers with connected printers, monitors, TVs.
Between By the way, a collective antenna is often plugged into the TV and when
it is connected to the telephone wires along with the Momed and Spectrum
something burns out on the PBX. You will pay a lot for turning it back on,
more than the transformer costs.

Kirill Frolov. [ZX]

YY>> on CMOS inverters). Maybe there is a proven scheme?

there is. and quite good - there is a connection on any lines, even on the most lame ones. The quality is really different...

KF> It has been tested for a long time - on almost any op-amp it is better than on
KF> 561LH2. The simplest thing is - look at the diagram from 48 Spectrum (140UD2 and 553CA3
KF>?).

Are you talking about the one in Leningrad? sucks! the most bullshit
scheme.

All the best.
Dmitry.

... LD..X-TRADE... [ZX]

Once, Wed Jul 07 1999 18:14, Yura Yakimuk wrote to Kirill Frolov about
[CXEMA_SV.ZIP [1/1]]:

YY> Question to the specialists: which comparator is the best for Wicomm (obviously not on
YY> CMOS inverters). Maybe there is a proven circuit?

CA3 with the correct wiring.

Once, Sat Jul 10 1999 00:39, Kirill Frolov wrote to Yura Yakimuk about
[CXEMA_SV.ZIP [1/1]]:

KF> DL meant his XTR, where the decoupling is made using optocouplers. This
KF> is more complicated and often similar than with a transformer.

I agree. mainly due to the low reliability of optocouplers.

KF> It has been tested for a long time - on almost any op-amp it is better than on the 561LH2.
KF> The simplest thing - look at the circuit from 48 spectrum (140UD2 and 553CA3?).

Are you kidding me?
A rare op-amp from one voltage +5V is normal it works!

My recommendation is 554CA3 (521CA3). Something like this:

┌─────────────┬─┬─┬────┬──── +5V
█ 500 11 6 7 █
█ 1-10K ┌─┴─┴─┴┐ █ 2K
├──███──┬─4─┤ ├9──┼──── Out
In. ─┤├──│───────┘ │ │ █
├──███──┬─3─┤ │ █ 240-270K
│ 1K │ └─┬─┬──┘ │
AL307V V │ 2 6 │
┬ └─────│─│──────┘
│ ├─┘
═╧═ ═╧═

The 521CA3 has a different pinout! (I don’t remember exactly)

KF>> 561ЛH2. The simplest thing is - look at the diagram from the 48 spectrum (140UD2 and
KF>> 553CA3?).

AI> are you talking about the one in Leningrad? sucks! the most complete
AI> bullshit scheme.

Maybe we should experiment with summaries?

What could be better? Nothing...
It all ultimately comes down to the amplifier and trigger.

Kirill Frolov. [ZX]

YY>>> on CMOS inverters). Maybe there is a proven scheme?

AI> there is. and quite good - there is a connection on any lines, even on
AI> the most lame ones. The quality is really different...
Soap for me please. I will print it out and distribute it to the people.
IMHO it should be done using a real comparator, and not ordinary op-amps.

13 Jul 99 08:14, Roman Milukov wrote to Kirill Frolov:

RM> A rare op-amp works normally from one +5V voltage!

And in the spectrum there is also +12.

RM> My recommendation is 554CA3 (521CA3). Something like this:

[...]

Something is wrong with the divider... 1402UD2 works normally.

Kirill Frolov. [ZX]

KF> Maybe we should experiment with summaries?

maybe so, but I prefer (or rather preferred when I worked with wikis
) another scheme..

KF> And what could be better? Nothing...
KF> It all ultimately comes down to an amplifier and a trigger.

here's the best thing for you...

─── Here begins the Shema.Txt file ───

tape in DD1.1 DD1.2 DD1.3
┌─┐ ┌─┐ ┌─┐ to buffer
──HHH─┤├─┬─┤ O─┬─┤ O─┬─┤ O───┬─────
R1 C1│ - 561ЛH1
├─>|──┤VD2 │ │ VD1,2 - KD521
│ │ │ O +5 R1 - 6.2K
├─HHH─┤R3 │ R2 - 1K
│ │ - 390-560 pF
R4

─── And here Shema.Txt ends ───

KF> [...]

KF> You’ve done something wrong here with the divider... 1402UD2 works normally.

Right now I specifically dug up that letter - everything there is correct.

Somehow 06:35:24 at approximately 07/14/99 someone Roman Milukov reported
for Aleksandr Majorov that “CXEMA_SV.ZIP [1/1]”

[ ]
AM>> I myself turned on the modem without trance, once...
AM>> Still alive.

RM> What for nonsense?
RM> And isn’t it a shame?.. :)
RM> Without a good galvanic isolation, a computer _cannot_ be connected to a telephone line
RM> You just can’t, that’s all.

I like this statement - “it’s impossible because it’s impossible”

no, to clearly say why it’s bad!
There have already been explanations of why it’s bad, but such
that there has never been such a thing as simply “because I said” ;-)

RM> And it is also undesirable to prove this experimentally.

ha, nothing exploded, right?
Even with direct contact at 220 ;-)))))

Although there was nothing good in the presence of galvanization...

Well, that’s all *MAS* with sledgehammer

It’s not even very desirable. Somehow in 1995 I SAW a modem for the first time. It was collected by Seryoga Romanov (it doesn’t matter), he transferred the toy to someone through the tf-copy copier. And then I decided to do the same and plugged in two phone wires. the lines are straight into the tape in/out :)
The next day the load "" command didn't work for me. Some kind of little thing flew off there. But that was a long time ago and on spec 48.
That’s the story!!!

All the best to you, Roman!

Yuri Nazarenko/Rezidnet/Discovery group
e-mail : Yuri_Nazar...@zxnet.spb.ru

16 Jul 99 22:08, Artur Ishmurzin wrote to Kirill Frolov:

AI> │ │ │ └┬┘ DD1 - 561ЛH1

And this microcircuit is the least suitable for a GOOD wiki.
It works on an operational computer immediately better. Noticeable on noisy and quiet lines.

Kirill Frolov. [ZX]

16 Jul 1999 you wrote here:

AI> here's the best thing for you...

AI> tape in DD1.1 DD1.2 DD1.3
AI> ┌─┐ ┌─┐ ┌─┐ to the buffer
AI> ──HHH─┤├─┬─┤ O─┬─┤ O─┬─┤ O───┬─────
AI> R1 C1│ └─┘ │ └─┘ │ └─┘ ┌┴┐ R2
AI> ├─|<──┤VD1 │ │ │
AI> │ │ │ └┬┘ DD1 - 561ЛH1

He fool people, mikruhu needs a 561LH2!
And I wouldn’t even recommend loading it with resistor R2=1K. You need 10, but you can do without
it.

I made similar circuits back in barefoot tape recording...
With a large signal, it works poorly. And even with very weak ones.
IMHO on CA3 it’s still better.

One day, Sunday July 18, 1999 02:43, Kirill Frolov wrote to Artur
Ishmurzin:

AI>> │ │ │ └┬┘ DD1 - 561ЛH1

KF> And this microcircuit is the least for Suitable for a GOOD wiki.
KF> It works immediately better on an OP. Noticeable on noisy and quiet
KF> lines.

you should read the messages more carefully, or something... what is supplied to the input of the circuit?
take a look. tape in. Now do you understand what it is? a conventional tape comparator. but
very good.

and we actually have an opamp on the vicommka. or even two. This is to anyone's taste. there is no big difference..

AM> I like this statement - “it’s impossible because it’s impossible”

AM> not to clearly say why it’s bad!
AM> There have already been explanations of why it’s bad, but
AM> there hasn’t been such a thing as simple “because I said” ;-)

No need to distort my words!!! nothing.
We recently had a multi-kilobyte flame on a similar topic in our local network.
A man burned his writing and a printer (or two computers?) while trying to connect them
(buzzing) via LPT. It was not grounded. It got seriously burned. But it’s good that at least everyone is alive, and the computer is not personal, but at work. And then some are fun, some are angry, electrical engineering and T.B. studied in echo.
Such debates are unnecessary here.

20 Jul 1999 you wrote here:

AI> you should read the messages more carefully, or something... what
is being fed to the input of the circuit?
AI> take a look. tape in. Now do you understand what it is? an ordinary tape comparator.
...
AI> and we actually have an op-amp on the vicommka. or even two. this is

Tyu! I thought we were talking about the ONLY comparator!
After all, it is the comparator that stands directly after the transformer
that determines the quality of communication! Well, from a transformer, of course.
And if you have a comparator on the vicomm itself, or just an amplifier, then
it almost doesn’t matter what kind of comparator is in the computer, as long as it works.
I don’t have any comparator amplifiers in the vicomm itself. And the connection
is very decent, even like this: my PBX (normal) is a very rotten PBX - PBX
point (it’s there too, the radio is playing in the handset).

17 Jul 99 23:10, Yuri Nazarenko pressed buttons for Roman Milukov:

YN> It’s not even very desirable. Somehow in 95 I SAW
YN> a modem for the first time. It was collected by Seryoga Romanov (it doesn’t matter), he transferred the toy to someone through
YN> tf-copy. And then I decided to do the same
YN> and stuck two wires of the bodies. the lines are straight into the tape in/out :)
YN> The next day the load "" command did not work for me. There
YN> some kind of mikruha flew off. But that was a long time ago and on spec 48.
YN> That’s the story!!!

Well, you can forward this right in HUMOR.FILTERED ;)

One day, Monday July 19, 1999 09:35, Roman Milukov wrote to Artur
Ishmurzin:

RM> Don’t fool people, mikrukh needs 561LH2!

oops... mistake.

RM> And I wouldn’t recommend loading even that with a resistor R2=1K. You need 10, but
RM> you can do without it.
RM> I made similar circuits back in barefoot tape recording...
RM> With a large signal, it works poorly. Yes, and with very weak ones too.

with both high and low it works ok!

RM> IMHO on CA3 it’s still better.

well, IMHO it’s exactly the opposite ;).

AI>> two. this is
RM> Ty! I thought we were talking about the ONLY comparator!
RM> After all, the quality of communication depends on the comparator, which is located directly after
RM> the transformer! Well, and from
RM> transformer, of course. And if you have a comparator
RM> on your computer itself, or just an amplifier, then it almost doesn’t matter what kind of
RM> comparator is in your computer, as long as it works.

it’s important. if the computer has a good comparator, then there is no need
to adjust the level of the output signal from the wicom to the computer.

RM> I don’t have any comparator amplifiers
RM> in the wicom itself. And the connection is very decent, even like this: my PBX (normal) -
RM> very rotten PBX - point PBX (it’s there too, the radio is playing in the handset)

it happened that at the moment of the reception/transmission process the buzzer
“busy” was loudly buzzing on the line :). and nothing, by some miracle everything ended well.

And it all started on 24-Jul-99 at 19:14:00, when Yura Yakimuk
talked with Yuri Nazarenko about CXEMA_SV.ZIP [1/1]

YY> Hello, Yuri!

YY> 17 Jul 99 23:10, Yuri Nazarenko sorry buttons for Roman Milukov:

YN>> It’s not even very desirable. Somehow in 95 I SAW
YN>> a modem for the first time. It was collected by Serega Romanov (it doesn’t matter), he transferred the toy to someone through
YN>> tf-copy. And then I decided to do the same
YN>> and plugged in two phone wires. lines directly into tape in/out :)
YN>> The next day the load command "" was not working for me. There
YN>> some kind of mikruha flew. But that was a long time ago and on spec 48.
YN>> That’s the story!!!
YY> Well, you can forward it right into HUMOR.FILTERED ;)
No, it doesn’t work, except in ZX.HUMOR =)
Here I am and Vladimir Burenin, who is now with his editor rushing around,
they downloaded a lot of all sorts of software using a turbo copier,
what did they connect to? I connected to the 3 wires of the telephone handset, and he
directly to the telephone network, and nothing happened to anyone. True, once
my “reader” crashed when I was still a lamer ;) I tried to read
a toy with poor recording quality directly from a 30W output, for larger
speakers, I turned the volume all the way up, so that something sparkled in the Specand
it stank :) it was kind of like 561LH1.
Yes... what a time those were, ehh :(

YY> Sincerely, Yura DOORSFAN

08:48 29.Jul.1999 Always yours Point777

AI> well, IMHO it’s exactly the opposite ;).

Your circuit will not work with a Wicomm, which does not have an amplifier, on the same line
that I have with /29.3.

30 Jul 99 08:35, Roman Milukov typed for Artur Ishmurzin:

RM> Your circuit will not work with a vicomm, which does not have an amplifier, on
RM> the same line that I have with /29.3.
Have you already written a tosser that allows you to gain points?

Best regards, Yura d00RsFan
[ZX] [DOORS] [BLACK SABBATH]

RM>> on the same line that I have with /29.3.
YY> Have you already written a tosser that allows you to gain points?

Are we sleeping? It's been a while...

[Team Kelly] [I ZX]
Hasta la vista.
Tim Kelly

Some people think they have a good heart,
when in fact they have weak nerves.

... tim_...@mail.ru 500:622/1@zxnet http://www.chat.ru/~tim_kelly

1 Aug 1999 you wrote here:

RM>> Your circuit will not work with a vicomm, which does not have an amplifier, on
RM>> the same line that I have with /29.3.

a) I don’t know what line you have with /29.3, I fully admit that it’s crappy...
b) I remember this nonsense from a spectrophone - a Vicomm without an amplifier.
b) the circuit works perfectly with a fairly wide range of signal levels.