------------------------------------------ ! ICOM IC32E ! ! Extended Frequency ! ! Range ! ! MODIFICATION INSTRUCTIONS ! ! ! ------------------------------------------ The new Icom IC32E is delivered with several frequency ranges. For the Eurpean market, it covers 144 to 146 MHz and 430 to 440 MHz, although the possible bandwidth is much wider. Your radio will be able to receive from 138 to 174 MHz and 420 to 450 Mhz and transmit on roughly the same ranges after the work is done. The modifications necessary are very simple and do not require any special electronic parts. All you need is a slall soldering iron with solder, diagonal cutters, a small screwdriver, adhesive tape, shrink hose if available, 2 diodes 1N4148 or equivalent and 12 cm of insulated, thin wire. Before starting with the modifications, remember that you might loose warranty. I also cannot guarantee a successful work ! Here is, how to carry out the modifications: 1.) Remove the battery pack and turn the radio off. 2.) Remove the 4 screws on the back of the transceiver. Be sure to use the right screwdriver. 3.) Hold the radio in your left hand and try to lift the frontpanel near the the battery pack holder with your right hand. Move a little bit left and right, back and forth to make it come loose. Open it up to about 1 cm on the bottom of the radio, then pull the frontpanel towards you with little force. Be careful not to break any leads inside. There is also a rubber gasket around the inner side of the case, that prevents water to penetrate it. Be sure not to rip it. 4.) Detach the speaker/mic connector, open the case completely and put the radio in front of you, with the battery connector pointing to the left. 5.) Below the speaker in the left, lower corner you find 3 diodes, soldered to small patches. One sits alone, 2 are adjacent to a multi lead connector. Thdse two diodes must be unsoldered at their cathodes, the leads that point towards the speaker and marked with a ring. Cut a small piece of adhesive tape and slide it under the diodes, so that it covers the free copper patches now and prevents the unsoldered diode leads from touching them. This completes the receiver modifications. If you are not interested in modifying your tramsmitter too, please proceed with 15.) 6.) Now you need a calm hand ! Cut two pieces of wird to a length of about 2 cm and remove 2 mm of insulation from both ends. Cut two pieces of wire to a length of 4 cm and do the same. 7.) Take one of the 1N4148 diodes and cut both leads to a length of 2 mm. Hold it with a tweezers and carefully put some solder on both leads. 8.) Take one of the 2 cm wires, put some solder on the ends and solder it to the kathode (marked with ring) of the diode. Keep soldering time as short as possible. 9.) Take one of the 4 cm wires and solder it to the anode of the diode the same way. 10.) Do the same with the second diode. 11.) Use adhesive tape or shrink hose to insulate diodes. 12.) Twist together the free ends of the 4 cm leads and solder them to the anode (lower) patch of the diode that is the nearest one to the multi lead connector. 13.) About 4 cm up and right from this diode there are 2 SMD-diodes with 3 pins. They can be found easily, because they are big, compared to the other parts around. They look like little, black boxes with two connectors on the left, one on the right side. 14.) Carefully solder the free ends of your diode cables to the RIGHT pins of the SMD-chips, one wire for each pin. Which wire you solder to wich diode is of no importance. It is a good idea to switch of the soldering pencil during this action to prevent heat destruction of the SMD's. This completes the transmitter modifications. 15.) Carefully examine the radio for wire clippings, solder splashes or foreign objekts. 16.) Attach the speaker/mic connector again, have a look on the rubber gasket whether it is still in its bed and then slide the front panel under the top cover. 17.) Close the case completely, put the screws in and tighten them again. DON'T PANIC ! Your radio will be resetted and all stored memories lost when you switch it on. This is NO malfunction. Because the second digit of the frequency (e.g. 1<5>3.205) cannot be entered through the keypad, you have to use the dial-select function in conjunction with the main dial knob to change the 10 MHz digit or the scanner. If a 'U' appears in the display instead of the chosen memory channel, the PLL will be unlocked and the radio is unable to receive or transmit. This might happen when you are close to the band ends. P.S. Any comments welcome, please send them to mailbox DB0GV [DZI-BBS] (B,D,G,H,I,J,K,L,N,R,S,T,U,V,W,X) H for Help } Hello everybody, new radios are getting more and more complicated, don't you agree? Here is a modification for the new Handheld Icom xcver IC-32 which will make it to act as a cross band repeater! 1. First take off the battery pack. 2. Remove the 4 screws from radio's back. 3. Remove two screws above and below the PTT and take the whole thing off so the four microswitches are revealed. 4. Take carefully the radio apart by slightly pushing away the front cover. 5. Put the two pieces in front of you with the front part at your left and the back at your right. Be carefull with the ribbon joining the two pieces!!! Orientation is as usual with the place that the battery plugs down and the top of radio (i.e. where the antenna goes) up. 6. Find some pads with diodes in the lower right of the left part (front) of the radio below to the speaker.Take a look in the drawing below: Top of the radio ^ [[---[[ The number of diodes installed in the top 3 pads [[---[[ depends on the frequency coverage of the rig, maybe [[ [[ two or all three. _ZDDBD @DDAD This is a small diode, by removing it the unit will receive from 300-370 Mhz but this is an untested mod! [[---[[ When you cut this one crossband repeater is enabled! \ [[ \ [[ If you put this diode crossed and have full frequency coverage not only you enable cross band repeater but Bottom of the radio you can insert the frequency from the keypad starting where battery plugs from second digit (without this mod when you wish to insert a frequency in another decade from the one you already are, you have to go there manually). Last but not least to enable cross band repeating first choose a pair of frequencies with the two vfo's for VHF and UHF.Then press and hold function ke while pressing with the other hand the following "C" "6" "D". The radio will start scanning the two frequencies continiously, if a station is heard in one of the two it will retransmitted from the other! The two frequencies must be simplex, no cross band repeaters yet sorry! =========================================================================== Beim Anschluss des AEA PK-232 an das ICOM IC-32E (auch IC-02E, IC-04E) ist folgendes zu beachten: Die PTT wird beim IC-32E betaetigt, indem die Mikrofonimpedanz 'niederohmig' wird. D.h. die Impedanz muss kleiner oder gleich 33kOhm sein. Die NF-Leitung des PK-232, die an die Mikrofonbuchse des Handy's angeschlossen wird (TX AUDIO, weiss) ist intern (im PK-232) mit 680 Ohm nach Masse abgeschlossen. Durch diesen niederohmigen Abschluss wuerde der Sender staendig hochgetastet. Abhilfe schafft hier eine kapazitive Ankopplung dieser Leitung an den Sender.( C=10nF ) Anschluss des IC-32E oder eines aehnliches Handsprechfunkgeraetes an ein PK-232 Kabel v. PK-232 IC-32 E 1 gruen ---------------------------------------- an Lautsprecherstecker (Innenkontakt) 2 weiss -----------------||----------------*---- an Mikrofonstecker C=10nF | (Innenkontakt) 3 schwarz * nicht benutzt | | Aussenkontakte beider 4 braun gemeinsame Masse f. Mike+Lautspr. | Stecker mit Masse ------- | (Leitung 4, braun) 5 rot ---------------| |-------------+ des PK-232 verbinden. ------- R=33kOhm Anmerkung: Innen- und Aussenkontakt beziehen sich jeweils auf die Loetseite der Klinkenstecker. Bei mir arbeitet diese Schaltung einwandfrei. (Dieser Text wurde damit gesendet). Fuer eventuell auftretende Schaeden kann keinerlei Haftung uebernommen werden. ***** 73 de Axel, DH4NAQ ***** ============================================================================ Datum : 900119/0518 Betreft : S-Metereichung des ICOM IC-32E: Aehnlich wie DF2UZ in der Rubrik STANDARD bei dem C-528 feststellen muss, dass das S-Meter eher ein Schaetzeisen ist als ein Messinstument, so ist auch bei dem IC-32E von ICOM eine deutliche Abweichung vom Sollwert zu verzeichnen. S-Metereichung fuer IC-32E Nr.: 02655 --------------------------------------------------------- Anzeige Sollwert Istwert UHF Istwert VHF S-Wert in uV dB in uV dB S-Wert in uV dB S-Wert --------------------------------------------------------- 1 0.02 6 0.12 21.6 3.60 0.18 25.1 4.18 3 0.08 18 2.00 46.0 7.67 1.10 40.8 6.80 5 0.32 30 2.25 47.0 7.84 1.30 42.3 7.05 7 1.25 42 2.55 48.2 8.02 1.45 43.2 7.21 9 5.00 54 2.85 49.1 8.18 1.65 44.4 7.40 9+10 16.00 64 3.10 49.8 8.30 1.80 45.1 7.52 9+20 50.00 74 3.40 50.7 8.45 2.00 46.0 7.67 --------------------------------------------------------- In der Tabelle ist neben den Messwerten auch der allgemein uebliche Sollwert mit angegeben, der bei S9 eine Eingangsspannung von 5 uV (Norm fuer UHF/VHF) am Empfaengereingang vorsieht. Mit diesem Richtwert sind die Messdaten zu vergleichen. Der Wert S1 wird bereits dann angezeigt, wenn der Squelch oeffnet. Es wurde bei voll geschlossenem Squelch gemessen. Die Eingangs- spannungen fuer S3 bis S7 liegen ueber dem Sollwert, fuer S9 und hoeher unter dem Sollwert. Die Abweichung ist auf beiden Baendern so gross, dass ein Segment der Anzeige gerade einem dB entspricht, also ein halbes dB pro S-Stufe. Daher laesst sich die Balkenanzeige wohl kaum zur Feld- staerkebestimmung gebrauchen.