Hello readers below the original message of the PD0FFM.
We followed his instructions and came to remarkable findings.
Our comment is between the text of the PD0FFM.
See this as a complement and add to your advantage.
A hobby is fun, especially if it does not cost much you know.
Similarly, packet radio, so may the PC and the cd radio not cost too much.
The PC, you can still use it for all sorts of other things, so I went to buy a 386DX.
But with the cb radio is different, that after all you can only use packet or sometimes you had the courage to say that you are also doing something else with it, be careful now.
Thus the ram looked up what the cheapest cb radio is what is appropriate for packet is proving to be a Maxon 1000.
The price of this wonderful piece of fun electronics f 165 , - including VAT and excluding shipping costs.
Calm down following address as yet.
The modem Baycom course we had already ordered and built.
After everything is connected it works so true.
After some time work shows that there are a lot of reject frames, it gives no thought.
All this with GP v1.51 but with the Baycom program there was nothing to worry about.
This gave the crowd back at least to do something.
The following changes are then made to the receiver, no sir PTT, sorry HDTP not in the transmitter.
Note: New from can have all of about 2 to 3 KHz in first adjusting a frequency deviation so this device out of the box.
With us it was not, this probably varies per copy.
MAKE THE SQUELCH FASTER
C101 22uF replaced by removing 4.7 uF 10V and C137 10uF.
IMPROVEDE THE AUDIO PASS FILTER
C139 1.5 nF 1 nF C142 road and away this is the audio pass the reception area to the speaker.
Yellow wire of speaker independent of item 20 on the PCB and solder chassis.
Take the purple wire from point 17 on the board and junction RFC411 and RFC406 soldering choke coils right, left rear.
We address the tone for the modem now on pin 2 into the microphone plug.
This was so.
Now that you 've always heard from the speaker even without a connected microphone.
To gain during packet, the sound just plug away with nothing in external output.
After all this goes flawlessly finally, you can still turn potentiometer RV 103 in a clockwise direction, this entirely at your own risk, but fun.
You may have to arrange something back then RV 102.
Here it turn the transmit power up to a maximum of 8 watts.
Please note that because you can get too hot to be here.
Output transistor the modulation of the transmitter turns out to be nothing here that we have to do in order.
A SMALL MISTAKE
Audio pass for transmitting microphone you can change the next, making the bass and treble volume ratio and improved.
Wave 1200 to 2200 improved.
Learn more people can hear you'll C246 stuck on an IC 680pF 560pF p type.
Finally I want the microphone connectors of Baycom modem and Maxon 1000:
MICROPHONE
= PEN 1
SPEAKER
= PEN 2
PTT
= PEN 3
GROUND
= PEN 5
BRON: JUGO DE PD0FFM EN DE PD0RHJ
THIS IS A WARNING FOR COPYRIGHT PROTECTED MATERIAL
All Rights Reserved. No part of this website or any of its contents may be reproduced, copied, modified or adapted, without the prior written consent of the author, unless otherwise indicated for stand-alone materials.
You may share this website by any of the following means: Using any of the share icons at the bottom of each page Google Mail, Blogger, Twitter, Facebook, GoogleBuzz.
Providing a back-link or the URL of the content you wish to disseminate; and you may quote extracts from the website with attribution to www.alwaysfree.nl.
For any other mode of sharing, please contact the author at the email.
Commercial use and distribution of the contents of the website is not allowed without express and prior written consent of the author.
THE WORLD OF FREE PACKET RADIO SOFTWARE IN AMSTERDAM
