[ARDF] Some information about Ukrainian Radios, I think...

[Matthew Robbins]

I was checking a bunch of ARDF sites today, and ardf.ru had a new
equipment link with one item in it: 
http://www.ardf.ru/information/equipment/rcv_birukov.html

The photos appear to be what we call Ukrainian radios.  (You have to
click the link to see the photos.)

I tried several translate tools, and I got some errors, so I did it by
pasting pieces into Altavista's Babel Fish.  One problem is that the
paragraphs ran together in the translation, so I had to separate the
paragraphs manually.  Plus, the translation is pretty bad.  But, since
several of us have these, with no manual I'm aware of, I hope it's of
interest.

What currency is "u.e."?

It's not much of a manual, but I found it interesting.  Here it is:



Equipment for the sport radio homing, Nikolai biryukovym priyemnikya's
izgotavlevayemaya

{I'm guessing at where to break the translation for this list…it's
just links to subheadings below:}
for the novices
professional receivers, general given
professional receivers, technicalities, 144 MHz
professional receivers, technicalities, 3.5 MHz
the transmitters

For the children in the plastic housings:

3.5 MHz:

1. simple superheterodyne only OF TLG regime.
2. simple superheterodyne regimes TLG TONE.
3. the same TLG and three tones.
Prices 10, 15, 20 u.e. respectively.

144 MHz:

Two-element antenna, tone generator is switched on constantly, peaking
circuit does not work at the maximum of strengthening in order not to
decrease sensitivity, and it is included smoothly with the decrease of
strengthening. Simple superheterodyne only OF TLG regime. Price 20 to
u.e.

All these receivers good all hear and they make it possible to
participate in the serious competitions. Small and lungs, it is
possible to place ten into the bag and to go to conduct training.
Deficiency not very durable, it is bad vlagozashchishcheny, in TLG
regime slightly changes the tuning with the pressure on the housing,
for this reason 4 he did not recommend simplest 3,5.


For the serious athletes in the metal milled housing:

 3.5 MHz:

Two regimes, switched by toggle switch, TLG for the distant method and
with the strong interferences, and TONE for the basic work. Tone
generator has 4 keys, which are changed with the decrease of
strengthening receiver - far- high tone, is nearer than 1 kilometers
average tone, 200m the bass tone, shch0m- the lowest. All this works
with the standard power of transmitter, under the actual conditions it
is naturally necessary to take corrections. In the receiver also the
two passbands PCH of 4 kHz and 100 kHz, switched by toggle switch. If
there are no interferences or in the neighbor search, when the signal
of the "fox" is stronger than interferences, in the broad band and the
tone it is possible not to be tuned for the frequency, receiver hears
entire range, are saved seconds in the neighbor search, it is possible
not to be tuned, if "fox" at the different frequencies.

144 MHz:

 As in the simple is smoothly included peaking circuit, two regimes,
peklyuchayemye by toggle switch TONE and threshold generator - rattle.
Rattle operates when the loudness higher than average, additionally
aggravates signal and enlarges the dynamic range of receiver -
loudness no longer can grow, but it is possible to work with respect
to a change in the tone of ratchet. The passband of receiver
sufficiently wide -150 kHz, certainly narrower receiver somewhat more
sensitive makes it possible better to be built from the interferences,
but wide more conveniently to work, you do not impede on the tuning
and do not make mistakes in the loudness of "foxes". The antenna of
receiver 3- element.

Price of 80 u.e. both 3.5 and 144.

Housings - small: 3,5- 140*40*28, 144- 160*40*28.
Joint of the telephones: standard fork.
Nourishment of all apparatuses: "Kron" or the storage battery of sizes
"Krons", "it is no", GP, d. r. all receivers are made so that any mode
switch does not require the correction of loudness.

Receiver 144 MHz.

Superheterodyne with an intermediate frequency of 8 MHz. Has tone
generator, threshold generator (rattle), peaking circuit. Peaking
circuit is smoothly included by the knob of strengthening and does not
work only during the maximum strengthening in order not to limit
sensitivity.

Receiver has two passbands IF amplifiers, switched by the toggle
switch,: wide -100 kHz and narrow of 15 kHz.

Tone generator and threshold generator are switched by toggle switch.
If transmitter works by the unmodulated signal, with poor modulation,
spurious radiation in the pause, it is better to use tone generator.
Threshold generator operates, when loudness in the telephones is close
to the maximum and serves for the additional aggravation of bearing,
expansion of dynamic range. Loudness maximum, but it is possible
without diminishing loudness to continue to orient with respect to a
change in the tone. The time constant of the filter of threshold
generator is selected so as to maximally decrease the error with the
rapid turning of the receiver (almost all designers of direction
finders use the simple diagrams of the filtration OF HF and athletes
they be surprised at oversights in the neighbor search). The threshold
of the wear and tear of rattle depends on telephones and is selected
under the standard telephones of 50 ohms. Telephones with another
resistance, old demagnetized, vice versa too loud with large
EFFICIENCY will give the imbalance between loudness and threshold of
the wear and tear of rattle. If threshold generator operates with the
weak loudness necessary to find louder telephones and vice versa.

For evaluating the distance according to the signal level serve two
buttons 200 and 50 it is meter. The gain control is disconnected with
the pressure on the button and strengthening receiver takes the
specific, rigidly given value. If is pressed button 200 it is meter
and audibly signal, then "the fox of the standard power of nearer than
200 it is meter. In the neighbor search it is possible to pass from
the button to the button, without regulating loudness. However, it is
necessary to remember that in the range 144 MHz the loudness of
transmitter strongly depends on the height of its arrangement,
forests, relief, power, the turning of antenna.

The amplifier OF HF receiver is assembled on two two-lock field-effect
transistors BF 998 c by very low factor of the noise (best) and
ensures very high sensitivity. The special circuit solutions are at
the same time used, so that not there would be overload by strong
signal. Receiver does not lose direction-finding properties with THE
HF voltage on the input of more than 0,5 volts and allows to approach
to the "fox" nearly precisely. It does not near become too sharp or
dull, does not double bearing.

Gain control in the neighbor search is well extended.

Large part of radioelements SMD.

To the deficiencies should be carried rustle during the rotation of
gain control near the threshold of the start of peaking circuit,
rather sharp gain control in its average position

(distance near 1km).

Receiver consumes current in the regime of silence of less than 10 mA.

It feeds from 9 voltage batteries or storage batteries of sizes "Krons".

Nourishment is included by automatically electronic klyuchem with the
connection of telephones.

The current of the leakage of electronic gate is less than 1 A
(Russian 1 mkA). There were the cases when storage battery normally it
worked after several months of the presence in the receiver; however,
to store small battery in the receiver I do not recommend.

Receiver 3,5 MHz

Superheterodyne with an intermediate frequency of 455 kHz, two
passbands of 3 kHz and 100 kHz. Has telegraphic heterodyne and tone
generator with three frequencies of tone, switched automatically by
gain control.

Sensitivity from the entrance in the narrow passband and the
telegraphic heterodyne is less than 1mkv (Russian 1 MKB),

With the tone generator - 2-3 V. Frequency characteristic in the
narrow strip has bell-shaped form and reminds CH.KH. LC of outline. In
the wide passband is formed CH.KH. with the flat apex, in order to
ensure the identical loudness of signal independent of tuning, and
thereby to decrease the errors in the estimation of distance according
to the loudness.

Direction finder, in contrast to the majority of the apparatuses of
the simply giving athlete collection devices, which facilitate search,
is made under the specific search algorithm.

The beginning of search transmitter is audible slightly- it is used
telegraphic heterodyne and narrow passband. The loudness of "fox" grew
we include tone generator. This is the basic operating mode, in the
tone more clearly are felt bearing, the difference in the loudnesses
of "foxes", the growth of signal. If transmitters powerful, then it is
possible to use tone from the start, sensitivity and quality of
modulation of signal by tone is sufficiently high. In proportion to
approximation to a "fox" is necessary to diminish the loudness, and
with those determined of the position of regulator audio oscillator
frequency changes. Such thresholds three, is three standard values of
strengthening on which it is possible to estimate the signal level and
distance to the "fox" in spite of the knob of regulator, at the rumor.
Usually average tone this is less than the kilometer, low 200 are
meter, lowest 50 are meter. It is possible to tune thresholds by
fine-adjustment resistor opening in the pay opposite the toggle switch
of passband (they are shifted all three thresholds and usually it is
adjusted slightly the threshold of 200metrov).

In the neighbor search, before beginning the work of transmitter it is
possible to include wide passband, it is possible not to fear that the
frequency of tuning was brought down, first seconds of cycle are
saved, it fell, it were hooked by knob on the branch, nevertheless
signal was audible, even loudness barely changed. It is possible to
run in the broad band with the diverse frequencies of transmitters, if
there are no interferences. It is necessary to remember that in the
broad band are audible all signals in the strip of 100 kHz in the
level compared with the "fox". In the telegraph broad band only adds
noise.

All mode switches do not require the additional fine adjustment of
loudness, is not descended the effectiveness of work.

The frequency drift of heterodyne is less than 5 kHz with a change in
the temperature to 20 degrees.

In the receiver Japanese variable resistors, are more than half - SMD
radioelements.

Pintle it is possible to tune fine-adjustment resistor the opening
above of pay, next coil.

Receiver does not lose the directed properties with the signal of 2
volts at the entrance (this less than the meter from the antenna of
transmitter). The aggravation of signal grows in proportion to
approximation to a transmitter.

Receiver consumes current in the regime of silence of less than 8 mA.

It feeds from 9 voltage batteries or storage batteries of sizes "Krons".

Nourishment is included by automatically electronic klyuchem with the
connection of telephones.

The current of the leakage of electronic gate is less than 1 A
(Russian 1 mkA). There were the cases when storage battery normally it
worked after several months of the presence in the receiver; however,
to store small battery in the receiver I do not recommend.

Transmitters of "fox":

- small, the dimensions of the housing of 90*110*35, mass -300gr,
housing it is bend out from zinc-coated iron;
- the storage battery of 10*D-0.26;
- power are standard: 0.5 W of 144 MHz and 1.5 W of 3.5 MHz;
- antenna 144 ensures three-lobed D.N. without zero failures;
- the number of "fox" is assigned by cross connection on the pay.
Price of "fox" - 30 u. e.

To order Biryukov_n at rambler.ru

Attention! The publications of price could change from the moment.