The Defpom Forum, for RadioMods, S&M Software and Music by The Defpom

Hi guys i am looking for a new project and i am thinking about building a linear lucky for me i have a friend who has done it before but i am looking for an updated schematic diagram to build one off of... i am looking for any help guys can throw me in this area... i want to build one about 3-4 hund...

well it has been a while (sorry girlfriend left for London so i was busy for a few weeks getting her time in) ok well here is the thing i have installed the new Final :) using a semiconductor... i never received the ones you sent but i scrapped an old radio that i got at auction for a dollar and sto...

Thanks i just sent it to you on your private messages if that does not work or if you have trouble accessing it i will post it on here.

ok well I cant get them from the guy I am ordering my final from I cant find them... going back to me being cheap is there something I can make them out of? I can get my hands on about any matterial like fiberglass and stuff what are they made of and what exactaly are they called... sorry for the no...

By the way where can i pick up some of those insulator strips or what can i make them out of bc i certainly dont have the one to go behind that final anymore

lol so i need to order a new final and put the insulator in it then i will be good

I should mention that the above situation is when the radio is ON if I turn the radio off I have power coming straight through no problem (like normal)... man am I confused by this one oh one more thing i noticed that there is a little piece of like fiberglass or something under each chip mounted on...

Ok, I have steady current from my power supply. However when i connect it to the radio i end up with a pulsing current not a steady one and when i have the mic pluged in it makes a thump sound in the speaker that goes along with the pulse on of the power...

Nope not on PA it does not even have lights when i flip the switch... and yes the cap and resistor is still in place

I installed the 1969 final and not the radio does not work... i did not scorch the board and i hooked it up just the way the other one came out... when i switched back to the old final it does not work either? i am confused as all hell any ideas what is going on...

Nope C2314 and C2028

I greatly appreciate all the help here guys I just ordered a 1969 final and 1957 driver for my radio. I really cant wait to install them and see what I can get out of this thing.

Where can i get a 1969 final for this radio?

Can you describe that 2030 mod you did. or post a link to where I can find directions to it. I also have a cobra 29 and I am playing with the Super Swing mod with it currently. I am also curious about where you got your linear I am looking for one. If you have any helpful information let me know and...

No I did not cut it. I removed it with a soldering iron and then replaced it when I realized my mistake. I am very glad I did not cut it.

DO NOT cut D11 it will make your radio sound like shit just adjust VR4 all the way clockwise. Also I just dit the "super swing" mod on my cobra it works like a champ but I had to find the right resistor in my case it was the 220ohm 1/4 watt. if you dont like your results change your resist...

It seems to have made a difference, but as you know my meter cant pick it up so I have to get a better meter before I can know for sure.

oh and this is a DX 4 so the parts you posted earlier are not correct my cans are named LR1 LR2LT1 LR4 LR5 then i have RVM1 RVQ1 RVQ3 lol yeah i think that is it

I sure will let me take a few pics of the inside... ok here is one the rest are on photo bucket

there is one pic to get you started if you need more or of a certain area just let me know

I also have one of these cheep-o starter radios that I would like to play with just to see how much wattage I can push out of it. Anyone have info on it?

I am looking for a 100 watt amp from a reputable dealer online anyone have any suggesting where I should go to get one?

I am looking for a SWR/Power meter and I was wondering if anyone had any suggestions as to which one (model)/ Kind I should get. I am not looking for anything fancy I need it to be in the $50-$60 price range. I have looked at Radio shack and I am not satisfied with the one they carry. If anyone has ...

oh yeah I jumped but I am not going to test it until tomorrow. If there is anything else you can think of off the top of your head to help let me know.

I have an uncle who is a mechanical engineer his motto is "Beat it to fit. Paint it to match." But I always thought my sky diving one made damn good sense

Well if you run into computer problems let me know I build them from time to time and I frequently fix them for friends. And if I don't have an answer I know some guys that will anyway D8 got it so I should just jump that from one side of it to the other then right.

Yes the 9- 10 watts is when I whistle into it. Also I would like to say thank you for the information. I have heard bad things about cutting D11 and as I have said earlier I don't think I am going to cut it I might just remove it to see what happens but I don't want to ruin a good diode I have to ke...

Well I tried it one more time with a 220ohm 1/4watt resistor and this time it works!!! When I transmit it reads 9-10 watts. I tried spreading that coil again and I find if I push it together I actually gain about a watt. So the mod is working like a champ this time... now what were you saying about ...

Good news and Bad news... Today I did that "super swing" mod the problem is I tried all 4 resistors(100ohm 1/4 and 1/2 watt and 200 ohm 1/4 and 1/2 watt) and both capacitors (220 uf 16v and 220 uf 25v) that they suggested needless to say I spent a lot of time soldering here lately. Each ti...

I really don't know how to tune my radio all I have is an SWR meter which includes a power meter in it. If you could be more specific about that process i would greatly appreciate it. Also those horizontal coils how much should I spread them? I have done most of the mods that involve the VR1-4 and L...

Thanks for the info. I do have a power meeter that works and is accurate. when tuning L13,L14 and L12 I am assuming I turn those clockwise until the power starts to decrease then go back up to my max power setting. I am also assuming this is something that must be done while the CB is on. If any of ...

Hello I am new to the forums, and new to CB radio as well. I have some cheap equipment and I am a college student who is tight on cash so not many upgrades available. However I have dropped $60 on a Cobra 29 Ltd Classic and I have two 5' fiberglass whip antennas leftover from when my dad was an over...