SKM C450i24093017191
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Page 3.
The i-. on-bhly Bulletin of the. ..'ireless Institute of Australia
Tasm. anian Division.
-FOR "SA'LE.
The following crystals are held in so-ue quantity by the Equipmenti
Store.
It is not gnticipated that ^ny I'urther stocks vifill be available
vvhen present stocks are deple'bed.
The (ff. o'Llov/ing type .i:l1T243 crystals are avail-ible at 75cents each,
postage extra if applicqble.
2840 3295 5680 5725 5760 5800
5990 5995 4080 4555 4580 4620
5527. 5 5750 5820 5860 6042. 5 6405. Kc/s.
The following type D (surplus) crystals are available at ^f
•each, plus post?^ge if applicable.
15940,. 15950 Kc/s.
The following type D (ne;>i) crystals are available at ^5 eech,
plus postage.
5502 5675. 8 5894.5 5905 7149
8008. 5 1596^ 15965 24016. 5 Kc/s
and 46. 0 tuC/s.
The above ten crystals a!re series resonant types.
H.7 Converter.
"GONSET" Super 12 ill band converter. Unused. Hybrid,
12 volts negative earth. Tunes fr*m 5. 8 -- 30 L. C/S
in fiive bands. I1 ' out in the broadcast band.
Suitable for inobiie use. price ^27 or near offer.
All enquiries for the above equipment to
be sent to IIEqui^...ent ytare
IA T.-is. Uiv.
Box 851 J GFO.
^obart 7001.
Don't forget that the Equipuient Storo carries t'o. e above goods
and many other items such as .^. irclux coils, oeramic insulated
variable condensers, winding /ire, coinputor circuit boards and
many other ite.Tis
So if you yre building or going to build geqr go along and. see
\vh. 9t they have, it is -nost likely that the parts requirtid are there.
"ue hereby nominate ...................... .. ''OR .-'EDERAL •JOJ1\'CILLOR.
proposed
Seconded
I nereby accept this nomination
Ivominee.
r'-se 4
The ivion-bhly Bulletin of the ireless Institute of Australia
Tas. nanlan
.
Division.
TECHNICAL ARFIJLE:
This . months articles were submitced by John VS7ZJG ;and should
prove to be very interesting and useful! circuits.
DYNAuiICl i. IGROPHO^E PRE-^M? USING JOT. BOARD TRANSISTORS:
- I. 5v
^ I. 8k i 59k
<
jO imp •nio
50-^2000, PNP
U.>-{if T ;<"~>l--
i.... (\/\
<
„. ->.„..- :...' 11 ..
llr
I Om f
-• - '•")0ut;put to
< Hi i:.p.
10-iif 1530 \ '^-^ j
< I0.k
"~-lOmf
+ t-
•^- Note - Reverse sup., ly'& electro polarity
for KPH transistors.
Transistor types tested.
FNP 054 .edium gain Slight noise TO 5
It
053 Lo.^ r.iedium " T05
tl
ln^, 6<a25 HI Low " TO 18 Black.
I02E, 6505 KI »i
Loi/ " TO 18 Texas.
NfN 086 i-.iedium G-. in Slight nolse T05
071 HI " . TO 5
Noise^and. . gain tests taken b^' feeding into good quality audio
a. nplifier, results by comparltive listening~tests.
OVERTONE XTAL OSCILLATOR US 11^G JjT. BOARD TRAIMSTSTORS.
./
PN? /
'^ 22pf
- Ik. •-Xtal . -=3" L4. -7 • '
48i,..c/i' LI ^- slug. former.
72pf 4T No. 22, §"long.
S 5.6uh
47
+ 9v,
Transistor types, tested at. 48i'.,, c/s.
Black TOI8 IH2, 6223
Te xa s - s i I'VQT T 018 102E, 6"5 05
B»th types give identlcgl results . nnd oscillate OK.
Adjust slug in output coil for reliable starting.
R. ?. 0. Bonus::
Plenty of these on the circuit boards, they
may be labelled s 56uh or colour coded