Ranger Radio Communications - Page 4 - Recent Questions, Troubleshooting & Support

disconnect your internal speaker and see if it helps. Its a poor power supply filtering problem and it effects the speakerin many ways.check to see if it hums with only the external speaker attached.

All radio's are factory set up and although you can tweak parts, this is usually at the expense of longevity or reliability. To tweak a radio properly and ensure it remains legal, you will need the service manual, an accurate frequency counter and standard, a nice dummy load and an oscilloscope. If you turn anything inside and do not know what you are doing, you could end up stressing output components due to signal mismatching and possibly end up with spurious transmissions which can interfere with other electronic equipment.

Generally, high SWR relates to an antenna problem. It could be as simple as the coax connector isn't tight enough. You could have damage to the coax cable, or the antenna may be damaged due to wind, or water in it. If you have access to an antenna analyzer, it will help you troubleshoot your antenna and coax, if not, start with a thorough visual inspection, looking for damage, cracking, or water infiltration.

The size of the wire is determined by the load it needs to safely carry. This can be obtained from the manual or the supplied fuse size. Once you have found this value, multiply it by 1.25. This means a 10 amp radio will be 12.5 amps. A 30 amp radio becomes 37.5 amps. A 60 amp radio becomes 75 amps - and so on. This is REQUIRED to prevent the wire being used at 100% of its capacity, which would cause it to heat up. Enough heat will cause insulation to burn. Insulation comes into play below. Use the chart linked below - and use copper wire. http://www.cerrowire.com/ampacity-charts In order to use this chart properly, you need to determine the insulation type. Different types affect ampacities of the conductor. Typical "romex" wire (the stuff in your house) is rated for "60 deg C (140 degrees F)". Specialty wires THW, THWN, USE, XHHW, THHN etc. are rated at "75 deg C (167 deg F)" and / or "90 deg C (194 deg F)" and have a higher ampacity for the same size copper wire than "60 deg C (140 deg F)" wire as a result. If you do not know which insulation type you have, assume the lowest "60 deg C (140 degree F)" type. Look up the amps you calculated above for your particular radio in the "60 deg C (140 deg F)" column, otherwise look it up under the column with specialty insulation types instead. If the CALCULATED amp value is NOT listed, pick the next LARGER value. Follow it back to the LEFT most column to learn the SIZE wire needed with the same insulation as listed in AMP column. If your radio was 48 amps, it calculated to (48A x 1.25) = 60A. If you don't have the wire, you can go to a store and say you need 20 feet of #4 copper wire with "60 deg C (140deg F)" insulation, -OR - #6 copper with THW, THWN, SE, USE, or XHHN insulation - OR - #6 copper THWN2, THHN, XHHN2 or USE2 insulation. The values above hold true regardless if in a circuit that is 6 volts or 600 volts. You should increase the wire size (lower #) on DC circuits only if the circuit length is 50 - 100 feet or more. AC circuits can be hundreds or more feet long before increasing the wire size is needed. I hope this was helpful & good luck. I hope you've got a ham radio license before you transmit with that radio in the 10 meter band.

no you don't

Have you checked the aerial? (antenna) often a power loss is due to problems in the plugs cables etc or high swr.

to slide between channels. or to tune the RX

Driver support might be the issue

what do you mean?

thermistor mite be duff Re: Jeff

there should be a knob on the face of the radio that says talk back. Adjust it to your liking but not to much so you don't get feed back.

some Rangers you can go to their site and get the information.I would google it then search for what I need then use that information.

There is probably a blown capacitor in the thermal protection circuit causing the cooling fan to run constantly. Unless you are an experienced electronics technician you probably need to take this to a shop to get it repaired.

I'll take it. just ship it to me .

did you try LSB. Maybe the band opened up for you.sniff around to smell which one blew and replace that one .if there are two together replace them both.

http://www.cbtricks.com/radios/rci/tr_936/index.htmFactory Service Manual

Please Re-post in the correct forum. This is for cell phones.