Telcom TE-145/150/157 Modifications

Main Modifications Page

PLEASE NOTE: FOR INFORMATION ONLY - MODIFICATIONS ARE MADE ENTIRELY AT YOUR OWN RISK

DELBOY ENTERPRISES DOES NOT RECOMMEND OR ENCOURAGE  THE MODIFICATION OF PMR446 RADIOS


Extra Bands by Ulf

 

Ok Here is how to solder to get TE150 to work on the other bands.

Open and take out the batteries. There are four screws holding the back of the set.

Now pull gently up, and take care, because there are clips in the front of the radio, and we donít want to break it. Press gently forward. Take care. 

Now itís open and put your nail under the circuit board and pull up, and take out the circuit board like the picture shows.

Lift the capacitor on the left and now you can se where to solder. Use a magnifier.

The solder field shall look like the schematic picture. You have to remove the solders on the three solder pads, and then solder the vertical link.

(Schematic originally posted HERE)

When you are ready, and put it together again, push the up arrow and the confirm button in the same time and turn it on.

Now you can se a new menu in the display. Band. Use the up arrow to change to P-K-L and then confirm.

Now you can change between 446MHz PMR, 432MHz LPD (Amateur) and 444MHz KDR only with some push buttons.

If you use rechargeable 1,2 volt battery, you only have 4,8 volt and not 6,0 volt. This radio is build for rechargeable battery, and work great with exactly the same power out. In the bottom you have contacts to charge the set. The battery indicator shows when it charges. 

There is reports coming in from different countries that they don't have to solder. The portable is already made as my mode shows. Maybe there is different settings to some countries. Test yours first and se if you already have this Menu called BAND.

Adding an SMA connector:

TE-150_SMA.jpg (62758 bytes)

Click on the above diagram for details


Any Questions?

Ligander@telia.com


Further Comments:

te150 converted tx but no rx, any ideas please
by ken 

i just did the link conversion on a te150, i seem to transmit on lpd mode but no receive, yet pmr mode still works fine, i have read all of the previous posts and cant seem to find this problem before, has anyoine any ideas please, thanks...ken



Re: te150 converted tx but no rx, any ideas please
by Per MŚrtnesson SM0UAX

The voltage on the oscillator is to low.
On the small PCB there is a little hole. Behind it there is a coil try to make the windings closer. You can measure the VCO voltage on a via just down left from the hole ( a long stripe makes a turn around this via). You will have round or below 0.5v and you can increase it by pressing the coil together 

SM0UAX


Re: te150 converted tx but no rx, any ideas please
by ken 

great, thank you, wonderful, may i email delboy to ask him to put it on the mod page as it seems to be a vital part of the modification, i squuezed the coil together and it worked straight away, what can i say, many thanks regards....ken


Posted on Mar 20, 2003, 5:52 PM


Hi again.... This is a modification to get better deviation (5khz) and much better modulation.

This was Jim, G8VFM idea first, but I located via hole on the other side so you don't have to remove the shield. This is done with an ordinary 1/8 watt resistor, 100K. 

100K on 240K and the result is 70K. Most people have this type of component in their junk box.

N.B. My brother measure the deviation and he got 5KHz on a unmodified radio. There is a difference in PCB board, and this early radios maybe have lower deviation, but our new  TE150 already have 5 KHz, so be careful with this mod!!

Look at my pictures and see if there is a difference between yours and my circuit board. If you have more than 5 KHz, you only get a bad sound, and you will interfere with other channels.

Take care.
Ulf
SM6GOL 
Sweden


Extra bands in TELCOM TE-150
By Deleo

(Works on some radios)

For these three bands: PMR, LPD and KDR is not needed to open the radio. Just press the "up" and "down" button at the same time you press the "power" button. Hold them until you get the new menu. It will show you different operating modes: P, L, K, PL, LK ,PL , PLK etc. The best mode is PLK, then you will be able to select these three bands through the "Channel" menu.

Other: LO=10mw in LPD band
HI=500mw in LPD band (it may be illegal in some countries)


If you open the radio and "play" with a solder and jumpers you can get a lot of more frequencies, but not all at the same time. A Three Band is enough for me.

Sorry about my English. Deleo.

Message Posted on Feb 27, 2003, 10:05 AM

 


Further Information supplied by Jim Hoy GW6NQU

E-mail: Jhoy@screaming.net

This mod consists of removing solder bridges from pads on the radios P.C.B. and adding solder bridges shown in the diagram (pad settings diagram) below.

These pads are located underneath an electrolytic capacitor to the left bottom corner of the LCD display.

After this mod the radio will power up in LPD mode 433.075 MHz-434.775 MHz 69 channels in the 70cm band as per the list below.

I would have been very happy with just this, a 70cm handheld for only £15 a very useful little radio for simplex use and monitoring repeater outputs, but I found some hidden menus by holding buttons on the key pad at power up you can change power output from 10mw-500mw. The specs for LPD are 10mw you also can get to a menu which allows you to change bands as below.

Band Channels/Frequencies 
PMR 446 8 Channels 446MHz
KDR 444 6 Channels 444MHz
LPD  69 Channels 433/434MHz
P-K-L ? Not Tested Yet
K-L ? Not Tested Yet
P-L ? Not Tested Yet
P-K ? Not Tested Yet
WT 20 Channels 421MHz
FRS 14 Channels 462/467MHz
PRS 40 Channels 477MHz
P 8 Channels Pos Aus PMR?

Jumper Settings:

Click on the image above


Removing The Roger Bleep


Hi.. I got a lot of mail from people who likes the mods. Some people ask me how get rid of the roger bleep?

Here is a hardware solution. Easy to do... Put a 3.9 Kohm resistor between the 2 points as the picture shows. This will do it.... But I like the bleep.....:-) The disadvantage is that you can't use the call tone! But do you?

Ulf, SM6GOL


More information on TE-150 mods:

http://www.qsl.net/oh1dx


Telcom TE-157 Modifications

Information posted on the 446 USER Forum

The Telcom TE-157 uses the same processor as the Telcom TE-150, so after this mod reset the same as the TE-150. 

Remove the four screws at the front of the unit. Invert the radio and remove front cover from the bottom first (Button don't drop out, I found out the hard way). Remove the two soldered wires and hinge the display board to the right on the right hand side of the board, under the TX button there are six linking pads, from top to bottom the links are set as 2 4 and 5 set for PMR, remove link 5 and bridge link 6. Re-assemble and reset as for the TE-150. 
You now have the three bands. 

I have also got it to run in FRS, by changing these link's.

Cheers - Blue Haze

 

More TE-157 Mods With Pictures


Telcom TE-145 Modifications

Just thought Iíd let you know that the mods for the te157 also same for te145.

Bands available in Menuís

Regards

Unicoder

UK 130-L


*********  ALL MODIFICATIONS ARE MADE AT YOUR OWN RISK ********* 

DELBOY ENTERPRISES ACCEPTS NO RESPONSIBILITY FOR THE VALIDITY OF THE ABOVE INFORMATION


PMR446 * PMR446 * PMR446 * PMR446 * PMR446 * PMR446 * PMR446

PMR446 * PMR446 * PMR446 * PMR446 * PMR446 * PMR446 * PMR446

PMR446 Main Page    Delboys Home Page

Delboy: Amateur, CB, PMR446, Radio Forum, Modifications, Users List, Reviews * Delboy: Amateur, CB, PMR446, Radio Forum, Modifications, Users List, Reviews * Delboy: Amateur, CB, PMR446, Radio Forum, Modifications, Users List, Reviews * Delboy: Amateur, CB, PMR446, Radio Forum, Modifications, Users List, Reviews * Delboy: Amateur, CB, PMR446, Radio Forum, Modifications, Users List, Reviews * Delboy: Amateur, CB, PMR446, Radio Forum, Modifications, Users List, Reviews * Delboy: Amateur, CB, PMR446, Radio Forum, Modifications, Users List, Reviews * Delboy: Amateur, CB, PMR446, Radio Forum, Modifications, Users List, Reviews * Delboy: Amateur, CB, PMR446, Radio Forum, Modifications, Users List, Reviews * Delboy: Amateur, CB, PMR446, Radio Forum, Modifications, Users List, Reviews * Delboy: Amateur, CB, PMR446, Radio Forum, Modifications, Users List, Reviews * Delboy: Amateur, CB, PMR446, Radio Forum, Modifications, Users List, Reviews * Delboy: Amateur, CB, PMR446, Radio Forum, Modifications, Users List, Reviews * Delboy: Amateur, CB, PMR446, Radio Forum, Modifications, Users List, Reviews * Delboy: Amateur, CB, PMR446, Radio Forum, Modifications, Users List, Reviews *