Recent content by Larry-b

Question. Is the jumper board between TP-7, TP-8 and TP-9 supposed to be soldered to the terminals. I was going to align the radio and found the board soldered in place, never saw one soldered before??????

I just now found this from cb tricks. Thought it might bea good follow-up. Brand and Type: MAGNUM S9 Problem: FRONT END OVERLOAD FROM VERY STRONG ‘ON FREQUENCY’ SIGNALS (BLOCKING DYNAMIC RANGE) Date: November 2006 Customers have been complaining about certain “S“series receivers not being able...

Thanks Robb. I just turn the RF gain back and it's tolerable. Yes the receive is VERY good and I am enjoying the S9 very much. Thanks

This S9 does have good receive I was just wondering about the higher than usual S unit readings on nearby signals and did not realize it could be overloaded that much in comparison to my Galaxy 959 and other radios. Nothing I can't deal with. Thanks

I just NOW purchased a used S9 and checking things out. The local stations that normally show S meter readings of S 9 and 10 on other radios are showing S20+ on the Magnum. One local (that is always overmodulated) now shows nearly +30 and so loud I have to turn down the volume when he talks...

Back to the POINT of the question OK my meters are OLD and are crap. I get that. The original question was regarding a "Voltage drop problem" at the power source. When I was using a car battery and charger (heaven forbid) I had the same voltage drop problem and changing the power cord to the...

Thanks Robb I understand your point about the RFX75 putting out that much power and I agree. I'm just stating what it is doing and the only thing I have done is change the power cord and the output power keeps going up. I can install resistors to lower the max output power but still do not get...

Follow-up II OK I took everyones advice and bought a 30 amp. power supply. I connected the power supply and checked output, 13.8V. The (adjusted to max) DK has jumped up up from 30W to 50 watts (I still run it at 10 watts DK). The PEP watts has jumped up from 117 to 165+- and the temp is...

Follow-up As it turns out the voltage drop problem turned out to be the wire feeding the radio/RFX75 was TOO small. It was a 16 AWG and I had a 12 AWG on order that arrived today. Man what a difference. Voltage only drops about .4 volts and the power jumped way up and is working fine. Thanks...

Thanks for the input guys. Just for the purpose of not having a lengthy thread, I did not include other information regarding the operation and installation of my set-up. I have been running radios and amps from batteries and chargers since the early seventies but with precautions taken. The...

I purchased an RFX75 and istalled it on the 29LX and it works like a champ, also installed variable power adjustment (works great). I can adjust DK from 1/2 watt to 30 watts and it swings to 117 PEP. It's been working for about a week and I've gotten many compliments on the increase in power and...

Problems Fixed I replaced c126, c143 and c62 and that solved the driver problem. Dead Key was still only 1/2 watt and barely swinging to 3 1/2. I figured that had to be a problem with either feed to the final or the final itself. Voltages checked out so I replaced the final with a new IRF520...

Actually the trace problem I found was a broken trace where JP36 ties into L16 which left one leg of L16 and C143 not connected. I have been unable to find any type fault in the area of R5? Ive checked the area with a DMM and found nothing out of tolerance. I used a remote webcam at 5X zoom on a...

Thanks. I will replace both. I do not have a capacitor tester. I will reply with results when parts come in.

"First Post" Not sure if this is the correct place to post this one. Radio stopped transmitting. Found R58 and driver burned. Replaced R58 and driver. Powered up and had .5 watts DK and some swing. Had it on about a half hour and something around VR5?? smoked, now driver is out again. The...