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in my notes I saved, according to Klein Comms: "The mysterious & secretive "Ranger" branded part-number RT-1 of their RF-power output / final MOSFET, is actually just an IRFZ-24N underneath the OEM "scrubbed" / ground-off labeling.!" most of them little MOSFETS are similar. just turn up the...

So nobody replied here yet.. ? I can't find the schematic to that 016A board. but are those IRF520's? four of them. ? I would just monitor the input current to the radio. Key up in the usual SSB mode with no mic audio. turn each bias pot so the current goes down to the lowest setting at...

Hmmmm! just checked my license. back a few years ago, I checked into a statewide net on 3910 kHz LSB. since I was new on this net, someone checked me out on QRZ.com and told to me go look at my license status. I found my license was expired for a few months! so the next day I went to the...

yep, could be any of a few things. here is what I would check.. with the mic out of the radio, measure the voltage at TR21-base. it should be "high" about 8 V if not, then find out why. maybe C117 is bad as mentioned. And it sounds like you have about 8 V a TR21-collector if it is in TX...

a good old 2N3906A should do. what are you working on? I usually use 2N3904/3906/2222 types to repair or build most small circuits.

OK, there is the kit. it makes it easier to deal with this Q67 transistor problem. A good idea! and that kit will work on them other RCI/Galaxy/Connex/Anytone/Stryker radios with that series modulator/regulator circuit. Nomad, you should rename that kit of yours to mention this. You will...

just took a pix. I used one of these old transistors from my stash, a 2N3638A for Q67 in a 2995. but any little audio PNP transistor should work. a 2N3906A type is common. . It's good to have a stash of some 2N3906, 2N3904, 2N2222 2N3053 (NTE128), MPF102, 2N3055, 2N3772 around. To repair...

hello there Larry! yes looks like Q67 is bad. I think Nomad was thinking of a kit to sell for that area. both transistors. Q66 n Q67. but I repaired a 2995 with this problem and just soldered in an old PNP audio transistor, with some good long leads. just takes some soldering skills, remove...

OK, got Lotto tickets. a little bottle of Jack Daniels. (gonna be cold down here again tonight!) on this 2970N4 here, in AM mode, mic all the way down, key up, and turn the power control down for 3 volts at the shorting board T.P. 7/8/9. and looking from the front of the radio at transistor...

Q67 can be bad which drives the modulator Q66. a known problem in these. I did this repair on a 2995. I have a 2970N4 here with a blown external amp to play with. "015" main board is now working. yes, "pinched audio" in transmit I was told, bad in SSB and AM. I tested the stock mic and...

so nobody replied here to this one. ? ? ? are you new to SSB mode? go to ch. 38 LSB during the day, and are you hearing the madness there? test your receiver there. some hiss is normal in SSB receive. what version 148 radio do you have? the tag on the back of radio.? Red China, Free...

hmmmm. just looked at schematic. that 15 ohm resistor that burned up is R104. It is at the input of the 8 V regulator circuit. (TR23) measure the voltage at emmiter of TR23 in tx and rx measure the voltage across R104 compute the power there. V squared divided by 15 maybe put a two watt...

I was sending out some "brag" videos and pictures to my "peeps" yesterday also. was messing around on 10 meters. 29 MHz AM. but was nice outside, walking around, drinking beer in my short sleeves on Dec. 15 Too nice to play on the radio inside my house. . . you said: "Southern...

so no noise out of the speaker? of any kind? maybe a problem in the speaker switching circuit, the external speaker jack. /

I check the bias adjust voltage circuit on these IRF520 MOSFET RF output radios first. take out that T.P. 7/8/9 shorting board. key-up radio in SSB mode, mic turned all the way down, no audio, thus no RF to the IRF520's. then measure the voltage at the gate of the IRF520 Q49. on this radio...

I check the bias adjust voltage on these IRF520 radios first.

so when in FM mode, squelch off, volume up, do you get the usual receiver noise? the rush sound.? and in SSB mode receive, all that usual noise, as a radio with no antenna connected to it..??

looks like your modulation circuit is working. and you get a few watts of carrier output when with J22 unplugged you said. I would look into the 8 V switching T/R circuitry. maybe the 8 V for receive is bad.

OIC / oic / oh I see you have a previous post on this radio. ? ? sounds like there is a problem with the external RF amp.

I have this 99 mounted on a five-foot metal mast buried in the wet Louisiana ground, against an old decking. (so I can play with them "tuning rings") but I had it on a 10-foot metal mast, with the coax at a 90 degree angle running over to my house. the metal mast will do what the ground...