Hi everyone. I just installed a Rfx75 on a cobra 29 lx. This is my first RFX. I've done a lot of effect pedal and tube guitar amps but I'm still pretty clueless with radio. I'm 90% sure i fried the erf7530 because the diode insidethe Mosfet is continuous both directions. I'm going to attempt to post several detailed pics to see if any one can possibly catch amistake but I'm pretty sure i blew it while attempting to setup swr with a poor power supply. Sorry if My typing is off I'm on acell phone. Thanks in advance!
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New to forum: help with Rfx (photos included)
- Thread starter 9Lives
- Start date
The mods i did were,
1. Remove 1 turn from output slug and attach 68pf cap to gnd on (solder side) left side.
2. Replace the 1000uf with 330ilectrolytic cap in audio section.
3. Remove j36 and sub in 1000uf cap with 33r resistor on the bottom side.
I would also like to do a low pass filter on the output but ican't seek to find any info on this..
Please understand that this is ALL about the ride for me..I'd rather blow up ten radioss and understand why than send it off.. i already have one of those
i already have a set of transistors on the way.
1. Remove 1 turn from output slug and attach 68pf cap to gnd on (solder side) left side.
2. Replace the 1000uf with 330ilectrolytic cap in audio section.
3. Remove j36 and sub in 1000uf cap with 33r resistor on the bottom side.
I would also like to do a low pass filter on the output but ican't seek to find any info on this..
Please understand that this is ALL about the ride for me..I'd rather blow up ten radioss and understand why than send it off.. i already have one of those
i already have a set of transistors on the way.Welcome to the forum !!...is this by chance the add on that is called the Whackpack or Super Whackpack by chance?
If so take a look at this link that goes to another thread here
http://www.worldwidedx.com/cb-band-cb-radios/22687-radioactive-wack-pack-unveiled.html
If so take a look at this link that goes to another thread here
http://www.worldwidedx.com/cb-band-cb-radios/22687-radioactive-wack-pack-unveiled.html
It's and external amp kit. World's apart from a Whack-O-Mole hack by the clown posse.
http://www.bellscb.com/products/accessories/RFX-75.html
http://www.bellscb.com/products/accessories/RFX-75.html
Naw, not the whack pack. This is a heat sink+ dual mosfet final replacement. It's nothing incredible i just wanted to try it myself. For future driving of larger amps. I basically want to mod the hell out of the radio. I'm just hoping that this is ALL due to blowing the final
You know... I'm not even sure i got a great output reading because i was trying to setup swr at the same time. I'm pretty sure i had as poor grounding and near my house... my antenna is 52" stinger and i couldn't get it right. But before i saw smoke come out the back i was getting 10 watt dk and 30 watts peak. So you think this could be due to the antenna setup poor low dead key? I'm still struggling to understand how it all works. On the instructions it says use 1000uf. Also I'm testing continuity of the drain and source IN CIRCUIT. Same rule supply right? What could fry the resistor like this? I really don't want to make the same mistake again.
RatsoW8
Supporting Member, W9WDX ARC Member - WD8T
In your third post the first picture the yellow wire looks like it is extended onto the trace next to it's own solder point.