Hi i have a texas ranger 696f base and cant find any info on it to adjust my rf signal meter can you help m?

Usually bad connections or shielding on the microphone.

https://www.google.com/search?q=texas+ranger+base+station+buzzing+noise

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SEE WHICH ONE RELATES TO YOUR NEEDS...
https://www.google.com/search?q=WIRING+DIAGRAM+FOR+CB+RADIO&tbm=isch&imgil=6YQuKn_TU-rqlM%253A%253BVSpHFUV3WvAMuM%253Bhttp%25253A%25252F%25252Fwww.mzentertainment.com%25252Fstudio_workshop_technical_archive.html&source=iu&pf=m&fir=6YQuKn_TU-rqlM%253A%252CVSpHFUV3WvAMuM%252C_&usg=__VuLGAePlGWcYUB8r00Abiz3A7Hw%3D&biw=960&bih=434&ved=0CDQQyjc&ei=lTNuVP-dGMaWyATZx4Fo#facrc=_&imgdii=_&imgrc=KqX8zim_578ZaM%253A%3BWRQxWhxDf14KUM%3Bhttp%253A%252F%252Fwww.walcottradio.com%252Fimages%252FMicWiring_2.jpg%3Bhttp%253A%252F%252Fwww.walcottradio.com%252Fmicrophone_wiring.php%3B800%3B1026

Does the unit work when it is not hooked up to the linear? The obvious choice is that you have blown finals in the RF output section of the radio.

i`m not certain how you calibrated your unit but being that i have extensive knowledge regarding radios my guess is that you do not have the necessary test gear to execute this procedure, also there is for the most part no reason to re-calibrate the RF circuit once they have been calibrated from the factory unless service has bin performed to the RF circuits ,possibly you might have tried to unlock additional channels capable bye your type unit and modified it incorrectly and your receiver frequency is not the same as the transmitted frequency, restore any modifications that you executed but and if you adjusted any coils pots,trimmers you must have some way to measure your adjustments
a calibrated signal source, a calibrated signal analyzer and RF measuring device such as a
RF what meter and field strength meter maby a oscilloscope depending what was done to the unit is necessary to perform calibrations

If you have thees or most of thees items let me know the model of your device and i will try to help you further

good luck from unit 99, power master base, Vancouver B.C 19 70s to 1978. VE7-ICV now.. Falco

This is not normal. Either you are magnetic, or you have some kind of RF reflecting off you. Or something like that. This is strange to me.

adjust L20 (AM) L21 (USB) L22(LSB)

Adj VR1 next to VR2 they are in the center of the main motherboard. VR1 will allow you to adj the S meter in AM mode only.

RF output power is 4 watts

is the meter good?

tintlady, here is the info you requested;
the AM limiter is R 276

These are the variable adjustments inside,and what they control.
VR-1 AM S-METER
VR-2 SSB S-METER
VR-3 SSB SQUELCH RANGE
VR-4 AM SQUELCH RANGE
VR-6 SSB CARRIER BALANCE
VR-7 TX OFFSET
VR-9 RF METER
VR-10 FINAL BIAS
VR-12 DRIVER BIAS
VR-13 SSB ALC
VR-14 AM HIGH POWER
VR-15 AM MODULATION METER
VR-16 AM MODULATION
VR-17 SSB POWER
VR-18 AM LOW POWER
VC1-10.240 MHz Frequency adjustment

Hope this helps you out, let me know,,Mechanic