Roger Beep - kit contents and construction notes

This article lists the contents of the Roger Beep kit and contains notes and information for constructors.

Table 1:
Designator	Value	Notes
C1, C2	0.001
C3, C4, C5	1
D1	1N751
PCB	RBv1.1
Q1	2N7000
R1, R5	12k
R2, R3	1k0
R4	470	1
R6	0	2
R7	10k
R8	6k2
R9	3k9
U1	Programmed PIC12F629-I/P
VR1	500

Table 1 is a list of parts that are supplied in the kit.

Notes:

R4 and R5 must be selected to suit the particular transceiver, the values supplied may suit some transceivers but suitability needs to be checked by the constructor.
R6 is a wire link supplied by the constructor, the resistor position on the PCB is provided for constructors who wish to use a bipolar transistor for Q1.
The kit does not include header plugs or sockets, IC socket, heatshrink tube, wire or solder.

Fig 1: Circuit diagram

Fig 1 shows the RB circuit diagram.

**Table 2:**
Pin	Description
1	+DC
2	Reset (NC)
3	PTT in
4	PTT out
5	Ground
6	Audio out

Table 2 shows the usage of pins on JP1. Most constructors will wire directly to the PCB, but for those who wish to use a connector, a normal 6 pin polarised header plug, or 90° version of same can be installed on the board.

Fig 2: Parts overlay

Fig 2 is a view of the parts overlay. The cathode (ie the stripe) of D1 goes to the left.

Fig 3: Example RB using an optional connector

Fig 3 is a view of the component side of a board using an optional 90° 6 pin polarised header. The chip was socketed in this case because this RB is used to test program code. Constructors could optionally install a socket to facilitate chip upgrade. R6 on this board has a 1k0 resistor installed, constructors would normally use a wire link, and R5 on this board is 4.7K to suit the transceiver.

Shielded wire should be used from JP1 pins 5 and 6 for the audio connection.

Changes

Version	Date	Description
1.01	23/12/2007	Initial.
1.02
1.03
1.04

Last update: 16 June 2008 03:59