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well my erf-7530 is bad have to find a new one emailed them but didn't hear back yet

is this a new one there making or the same rfx75 just different wording

It's the same...

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MoJo
www.mojoenterprises.us

I have installed these rfx75s in a few radios very nice although I purchased units from different suppliers and one was doa. Hard to get warrantied. (should say no warranty.)

i got two and both no output

can anyony tell me how important the c42 voltage is on the cobra rfx 75 mod..i intsalled all the parts as stated on cb tricks (a wonderful site..thanks for all the help)..the rfx 75 seems to be working fine..deadkey 10 swings over 130 on my cheap meter..the install call for a 3300 uf 16 volt capacitor in the place of a 1000 uf 16 volt..the problem is radio shack only has 3300 6.3 volts ..should i leave the original cap or replace it with the 3300 6.3 volt cap..what can happen if i dont get the right cap values..thanks for any help

I did this mod and am somewhat impressed. I installed just a few minutes ago and got a dk= 5 1/2 and swings to 55-58w. With modulation set at 18-20% and swings 100%. I have not installed the 1000uf at j36 and 33ohm resistor on the other side. I am running at 13.8v and it pulling around 5-7 amps and it is getting very hot if you stand on it at all. I will install cap at j36 and resistor and get back to you. I think the 130w is way too much for a mosfet rated at 75w.

did you change the cap at c 42? that is one of the things i am wondering about..i did ad the cap and resistor at j 36 ..im wondering about the voltage at c 42.. the only cap i could find at radioshack was a3300 uf 6.3 volts..calls for 3300 uf 16 volts ..the ? was will it blow the lower voltage cap...as far as the 130 watts i have a cheap meter its probably more like 100 watts im guessing

Just get a RM KL203 amp and velcro the thing to your radio. 100-130 watts and much more reliable plus you can use it with other radios. Plus, you get a REAL deadkey of 20-30, not this 5-8 bullsnot.

Whatta cheap meter.....

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XDX74