Recent content by loosecannon

take a little section of a thin rubber band and put it vertically on the ferrite slug. then insert it into the core. should be able to get it to thread in then. LC

Rogerbird, Yes, shorting board stays connected. You need to put an ammeter in series with the positive wire going into the power jack on the back of the radio. if you can't break the connection at the power supply then you'll have to de-solder the positive wire on the inside of the power jack...

crappykraco, just so you know you can use a regular DMM to set the VCO. the others do require a scope. as for the TX power, you need to do a TX alignment. set the radio for channel 20. AM mode, mic gain down. key the mic and set L48 and L47 for max deadkey. do the same for L45 and L46. now...

This is interesting because i have been doing the same thing in a slightly different way for a long time now. I set the VCO 34mhz cans with the freq counter to be dead nuts on. Then i set the AM 27mhz signal to be dead nuts on with the AM IF can. then i use the sig gen which has been calibrated...

that board is used in the ICOM IC-751A models. They all use the B703 board with a different letter at the end. Google AI seems to think that the "G" designation means it came from an IC-751A meant for the European market. However, I think i agree with Brandon that this one might have come out...

yes nomad those are good tips. I took your advice about running the power and ground wires that feed the 7809 right to the main filter cap, and it seems to have worked quite well. there still seem to be a few "birdies" on some freqs but i think this is just an artifact of the kit because ive...

yes this is the digimax lite board with the MC145106 adapter board. MB8719 won't get you up into 10 meters without a crystal change. the board you see attached to the power supply bracket is a filter that cuts out the multiplexing noise. i use a 7809 to drop the 13.8 volts from the radio down...

Hi all, Im celebrating 10-4 day by finishing up a fun project for someone. They wanted a 2000GTL that covers the 10 meter band. I've heard rumors that people used to do this to CB radios back in the day... here's a few pics. i can take more. (yes my bench is messy, what about it?!) not...

Damn Nomad you are right! This is just a few that sold over the last month or so on ebay: a 10 dollar radio and a 20 dollar antenna went for 1700 dollars! LC

Excellent write up! very helpful, thank you Nomad. Just to avoid any confusion from those that come across this tutorial, when Nomad is talking about connecting a gator clip to the anode of the diode that goes across the relay coil (D1), the other end of that gator clip would go to ground...

the red wire looks to be the channel 9 portion of that switch on J503. it should just be one cable that plugs into that switch board and the other end plugs into J306 on the channel selector PC board. Like this diagram: however, if for some reason your radio does not have that harness intact...

based only on that pic it sure looks similar to the 2950DX boards. LC

wow i have never seen that before! I have had someone use locktite on the tiny screws that hold the final and driver in though. LC

What he's talking about is changing the values of certain capacitors in the audio chain to widen the response. LC

Can confirm. I bought a plug from them recently and was hit with multiple attempts of someone trying to purchase gift cards on my account. had to replace that card. LC