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I understand that noise. What im getting is feedback as long as mic is keyed and changes tone if you move mic around facing it other directions.

Well all, i picked up a golden eagle mark 4 the other day for cheep. Its a 9.9 in looks and it works just fine. I also bought a banana style mk3 mic. I wired the mic for the radio and i got tx and rx and audio but i also have a squeal as if the mic is to close to the speaker. Feedback type...

I'm trying to locate a SERVICE MANUAL for the Dentron MLA2500. All I can find while searching the web is an Operation Manual and computer viruses. Any have one or know where to locate a DL of the Service Manual?

Sold.

well, i thought of that. i was hoping you had another way to do it, :rolleyes:. I did find out what it was, "RFI". All I had to do was move the wires/mini coax's and everything was good. After all of that it was the simple thing! Go figure. Live and learn, Check the little things first! Thanks...

OK. Its not ic1, ic2, or ic3. I swapped parts from one radio to another and visa versa and the working one still works and the one off freq is still off freq. Looking at the schematics it looked to me that ic2 is where pins 17, 18 and 19 get there voltages. This all started when i installed a...

REF osc xtal (if this is X1) then it is at 10.240. I've rotated the hell out of the switch and that didn't change anything. Not sure how to test the switch. As far as the IC1 chip (D2816C) voltages according to the book are off in a few places. pin 4 should be 4.9 but seeing 0.5 5...

I have a Cobra 29 Philly model and on channels 1-7 it is fine but when on channels 8-40 its off freq by a lot! Like channel 19 is 26.9378 and channel 31 is 26.9275 Very odd!!! I'm guessing this is an issue with the PLL chip. Can someone else give me an opinion if I'm going in the right direction...

Bought this one and used it for three weeks in the mobile. If you look up posts I've made you can see I was getting good reports on AM and made a few SSB contacts too. SSB is great but I'm just wanting something else I guess. Spend most of my time on AM. Comes with everything it came with. Its...

Im using a cn-801 meter and it reads pretty good. give or take a bit. you know how these meters are. But as I said, I put it on my bench at home, used large power cable and a plenty big power supply and it still isn't getting much more. This is a lease truck so that's why no wires to the...

Wow. Hard days at work. Sorry i didnt get back sooner. Ive upgraded the power cord to bigger along with the fuse. Using a 23amp power supply and the best i can get is 60pep. This guy drives a very new truck and has the drawer type spot above in thr center of the cab for a radio. No extra room...

Got a guy I work with that wants more power. Doesn't everyone. He bought a new 929 and ordered this stinger board. According to the specs it should be able to get up to 100 watts. Yeah right, we all know how they stretch the truth on theses things. Anyway, I didn't mount it in the radio but did...

16,088 miles. LP to VK3 (Australia) from Colorado. 20M, Low power (100Watts).

Id do more watts output if i could get away with it but like i said, im limited to a 20 amp xurcuit. Althought i guess i might be able to tie into a cig light jack for a bit more.

Anyone have a recomandation of a mobile amp that i can use with the optima? Im wanting 100 watts or so but not much more as im limited to a 20 amp curcuit in the big truck for radio and amp.

BTW, one of the reports i got while on AM was "it sounds like your in the cab with me". Cant complain about a report like that! Jerry...

Sorry to hear you had such a bad time with a Optima. I did get one and wired up a noice cancelling mic to use in the big truck. I get good reports on the audio. Its not an audio monster like a Styker but it is loud enough. On ssb ive worked a few other states now. Not a bad little radio. I wish...

Im runnibg my Optima in a Peterbult. I spend all my windshield time on the blacktop. U would think if your a dirt or rock hauler then the optima might fall apart after a few years. I run the power at 5watt carrier swinging 40 and am gwtting 100% modulation with a noise cancelling mic. This...

I also like a slight touch of reverb sound in my audio. I think its the truck driver in me. But just a little reverb. NO ECHO! I hate the guys that dont know how to set up the audio sound and just echo 3 to 4 times every word. Plus with an echo you need a talkback so you can monitor it. Did you...

I cant even find the noise floor here in Colorado. What the hell? I thought my antenna broke off.