| Author |
Message |
pcs
Site master
Joined: 18 Jan 2002
Posts: 3078
Location: Radio Land |
|
 Manual and info: Universal Amplifier Control Board v20 |
 |
http://www.pcs-electronics.com/universal-amplifier-control-board-p-1150.html
This board can be used to control/manage virtually any RF amplifier either for HAM or
FM broadcasting needs.
It provides the basic eco-system for the amplifier:
- Gives user means for adjusting output power by controlling power supply voltage (the only proper way to do it, not by varying drive!)
- Gives Power, SWR, temperature and Frequency readout on the LCD display
- Provides temperature and SWR protection
- Keeps track of uptime, in days, hours and minutes.
- Contains DC/DC step-down power supply giving 13-15V from 20-55V that the main power supply uses, eliminating need for separate power supply for your exciter
- Automatically manages fan depending on adjusted FAN temperature (LCD)
- Will soon offer remote management via RS232 or USB port with easy upgrade (cheap plug-in board with connectors).
- PCS Electronics welcome screen can be disabled, if necessary.
You can use this to construct a really cool FM band, HAM band or other band amplifier. Basically each manufacturer has some form of this controller board, usually in a stripped-down version (haven't seen anyone support that many functions yet). However, we are giving our customers a chance to build their own amplifier from your own modules.
Manual is coming sometime this week.
_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Last edited by pcs on Mon Jul 14, 2008 11:17 pm; edited 2 times in total |
|
| Mon Oct 01, 2007 5:09 pm |
   |
 |
pcs
Site master
Joined: 18 Jan 2002
Posts: 3078
Location: Radio Land |
|
|
| Mon Nov 05, 2007 11:39 pm |
|
|
pcs
Site master
Joined: 18 Jan 2002
Posts: 3078
Location: Radio Land |
|
| A few fixes for potential problems |
|
1.) If you think error led should be brighter than it is,
add a 470R resistor between pins 4 of 7 of the big 28-pin
atmel IC on the control board (NOT the lcd module).
2.) To protect against transients caused with FAN it is
recommended to place a diode (1N4007 for example)
from - to + connection for the automatic fan.
3.) The on-board RFC (they look kind of like a big resistor)
for filtering DC voltages to fans and fm exciter are a bit too
weak. You can either just short them with a piece of wire
or replace them with a coil/rfc with better current rating.
There are a number of these on boards. Some of them are
connected in parallel so jumpering just one is enough.
Latest firmware release: 2.3
- Extended to 2.5KW
- Fixed some cosmetic issues
_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128 |
|
| Wed Jun 25, 2008 8:43 pm |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group |
