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I have a blue face magnum 257 and just got a killer deal on a rfx-75 and I know the 257hp comes factory with that exact unit...my question is where are instructions to add one of these to a normal 257 radio?

what are all the differences between the two and is it possible to upgrade a d to dg still?

i tried wiring it to my RCI 2990 it will change channel up and down and key the radio but even when unkeyed it will modulate through the speaker.i notice as long as the mic is powered on the vu meter on the mic will swing as you talk even when unkeyed is this normal behavior for this mic? ive...

I got an awesome,super great deal on it with an antenna tuner,remote cord,desktop and hand mic.thanks for the heads up W5LZ!!

KENWOOD TS-440S i searched the net and all i could find was a explanation on how to fix it with no pics or anything. I just repaired my key bounce problem with great success and id like to share my experiance. here goes my first tut: step one: unhook anything connected to the...

first one is what would keep the squelch from working?turn the knob and nothing happens.I opened it up to do the diode mods and found a couple of connectors with broken wires.i repaired the broken wires so hopefully thats no longer an issue.

ever since i got it ive had a problem where as if the radio was cold the power was way low,once you left it on a while it would pick up and do some decent wattage.i took it to the local radio guy and he managed to get the power to be higher when it was cold but it would still increase when it...

my elantra has (had) bad fuel pump and cooling fan noise.i simply wired capacitors(condensers) to the suspect part and lo-and-behold...no more noise.the fan noise was so bad i had to leave my ac off to use my mobile...not fun in the humid south.im also running a wilson 5000 magnet mount but my...

local screwdriver jockey messed up my 257 and i want to send it in for repair by magnum.i lost all my paperwork and am not expecting warranty repair.does anyone know how to get in touch with them on the phone? i tried sending a message from the magnum site but got no response and could find no...

i can get it for little under 500 shipped with a bunch of filters and the tuner plus all mars/cap mods done. talk to me.

i have one of these matco 2 channel scopes brand new and was wondering if it could be used on standard electronics or aligning radios.

was working fine till i got my new dosy meter,hooked it up to check swr and couldnt get it to set.thought the meter was defective so i hooked the 2510 to it and could set and check swr no problem.went back to the rci and noticed there was a slight arcing sound when keyed up.upon further...

theres 3 sets of jumpers,none labled.which is which? cbtricks board layout dosnt label them either.if someone has a pic pointing out the jumper IDs(j1,j2 ect) id be gratefull,all i found searching was the procedure with no diagrams.

just the knob and bracket,i have a switch and the thumb screws.lemme know. thanks.

i got this meter from a friend a long time ago and always thought it was accurate till another friend got a brand new astatic 700.i checked the swr in my mobile with the new wilson 5000,matcoe 225 plus and a uniden pro 510 providing the signal.antenna is on the roof and my meter shows 1.1 swr...

found this in a uniden pro510 a friend gave me.i had to unhook it due to a short that turned out to be two resistors touching causing a constant keyup.problem is i didnt note where all the wires connected.i know the red and grey are power and the blue was hooked to rec on the mic plug.i believe...

just purchased a friends RCI 2990 base and i need some pointers to straighten a few issues. first: the display resets when you cycle the power on the radio.does it have a battery that can be replaced? second: the lights dont work on the meters,display or buttons so a tutorial on upgrading to...

i have 2 saturns i took to a shop to repair.the owner is in bad health and gave my radios back without the covers(top and bottom) i have a buyer for both radios but he wants the covers.it may be a while before the shop owner is strong enough to help me locate my covers if he recovers at all.the...

radio: magnum 250 amp: drake 150 2 pill antenna: wilson "lil will" magnet mount problem is with the amp in line and turned off radio only keys 1 watt and swings 4. with the amp out of line radio keys 4 watts and swings 25. amp is putting out 150 watts on high but my swr is 4 to 5.with the...

this radio is a dog for sure.no echo or freq counter working.now i discovered its only keying 4 swinging 5 watts.i tried turning the vrs listed in another thread posted here in 2007 but the most i can get is 5 watts.i know these do ALOT more than that.....does this sound like bad finals? or is...