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Semiconductors.
ARDFrx80-7
pa0nhc ARDFrx80-7 20140911

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For your convenience are part types and order numbers given. If you use others, check them for correct properties.
Attention to the correct pinning of the fets and the transistor.

First take anti-static measures.

T1

BC547c (or eq.) Pinning CBE (sen at top, with flat side towards you, l-m-r = C-B-E) 

140539

IC1

NE/SA 612N / 602N

152285

IC2

TL072

155617

VR1

LP2905CV 5V

175676

D1,2,101,102

1N4148

162280

D3

Zenerdiode 5.1V

180092

D4

1N4002

162221

FET1,4

BF998 SMD dual gate MOSfet
REM: wide leg is source (connected to mass), legs bend towards PCB.

153029

FET5,101,102,103

Low IDss  Jfet (Ids=200uA @ Vgs=1.6-3.8V, pinch-off <= -3V.)
                                   
-------------------

REM: These types are equivalent, but differ in pinning.
          See schematic, PCB and component data !
 
      
   BF244B  Pinning (top l-m-r) DGS   or
         
BF245B  Pinning
(top l-m-r) GSD   or
          BF246B  Pinning
(top l-m-r) SGD   or
          BF247B  Pinning
(top l-m-r) GSD      

 

Box73.de

 

CD1

BB535 or eq. (18 to 8pF @ 0.85 to 5V).

153196

CD101,102

BB814 (diode pair, 2x) 61 to 28 pF @ 0.85 to 5V, var.=33pF).
or
BB804 (diode pair, 2x) 60 to 31pF @ 0.85 to 5V, var.=29pF).

Pinning (top l-m-r)  a-k-a, with the legs bend towards the PCB.

=>  Only one diode of each diode pair is connected, the other is left floating <=

153261

 

 

LED

Bright red. short leg = k = minus.

184560