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DX 2547
AM/SSB 11 Meter
Base Station Radio

Download Manual



  • New Style Midsize Chassis:
    • 4-3/4"H x 11-1/4"W x 13-1/2"D  and only 12 lb.
  • Operates on both AC and DC
  • Six Digit Frequency Counter
  • Large, easy-to-read meter with 4 scales:
  • Automatic SWR Circuit (no calibrate control)  
  • Talkback Circuit with On/Off Switch and Volume Control
  • Variable Power Output Control
  • Roger Beep with On/Off switch and LED Indicator
  • Galaxy Noise Filter for use on weak signals
  • High SWR Alert LED Indicator
  • Instant Access to Channel 9 or 19
  • Receive Clarifier with On/Off Switch
    (Modifiable for RX and TX control and expanded range most SSB
    users recommend this mod for this radio, see list on the left).
  • Tone Control for receive audio
  • Flip-Down Feet
  • Two Year Factory Warranty (even after we modify it)
  • SHIPPING: 22 x 22 x 14 21lb shipping Outer box.
    We double box, inside box measures 18 x 13 x 9,
    and wrapped in large bubble "bubble wrap",
    Then wrapped in layers 2-4" thick all around.
    It is insured for at least $300 + the value of your upgrades.


Factory power setup
AM:  3.7W With Peak 16W

Power after a tune-up
AM:  5W With Peak 28W



Tune-up Reports and Custom work done here at BellsCB:
This is a playlist and has multiple videos
 (notice the   button to change to the next video)
Comply with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. Further information can be found at the FCC website or the ARRL website

Transmitting using this radio when MODIFIED for extra channels requires an Amateur Radio License. Licensing information can be obtained by visiting or In Canada, visit or


 ...AM/SSB CB Transceiver... $309.50


Optional Accessories

 Tune-up. 30 W peak power (perform a tune-up to radio to increase power, audio and performance)  AM carrier 1~6 watts and 28-33 watts peak power. $39
 RFX-150 Final. (perform a tune-up to the radio. Increase power, audio and performance and a completely new final section consisting of even higher power MOSFETs) AM carrier 35 watts and 145+ watts peak power and 130+w PEP on SSB. You must supply the necessary external 30A DC power supply. $199

RFX-150 FAN KIT Installed Install FOUR - 30 x 30 x 10mm Black Fans with a switch for on/off combined with the amp on/off switch. $69
Perform Receiver improvement mods.
(These mods replace key RX parts for better sensitivity and lower noise)
 Tune-up and frequency conversion. OPTION #1
(Install extra channels with switches in back of radio and tune up radios output)
 Tune-up and frequency conversion. OPTION #2
(Install extra channels with a Lescomm 120 channel kit and tune-up)


Slider Option
 Clarifier "Slider" conversion.
(Modify the Clarifier to control TX and RX frequency. This mod is an add-on to the two frequency conversion mods listed above for $15 and if done separately will cost $35)

 Install an MD-1 Top Gun Modulator.
(wired behind the radio with optional switch for on/off)
 Install an CP-1 Top Gun Audio Compressor. (on - all the time) This amplifies your lower level audio on transmit.
NOTE: It becomes difficult to use the Talkback even at low volume with this mod.
 Astatic 878DM Amplified DESK microphone. (wired for this radio with a four pin plug and a Duracell battery) $68
Palomar SL-41 Noise Canceling microphone.
(wired for this radio with a 4 pin plug)

 Turner RK-56 Noise Canceling microphone.
(wired for this radio with a 4 pin plug)

 Astatic 636L Noise Canceling microphone.
(wired for this radio with a 4 pin plug)

 Astatic D104-M6b Amplified microphone.
(wired for this radio with a 4 pin plug and a battery installed)
 Astatic RD104-E Amplified microphone.
(wired for this radio with a 4 pin plug and a battery installed)
 Install an Echo board. (BACK or SIDE)
(wired internal to the radio with dual controls on the side or back to control speed and echo effects. I use Chrome knobs)
 Install an Echo board. (Front)
(with dual controls on the front in the headphone jack location. The jack is moved to back of the radio. I use black matching Galaxy knobs)


We recommend White
 Install bright LED lighting behind the 2 meters. I like white the best and is the only color I guarantee you will see bright and nice. Other colors are pretty but not as easy to read the meter if your getting up there in age. :o) $26

Sound Byte link

 Install a Noise toy
(wired inside the radio with a switch or pushbutton to trigger any 18 second sound byte you want)

Sound Byte link

 Install a Noise toy as a background theme music
(wired inside the radio with a switch to play any background music at very low volume so you can talk over it.)

  Install a Record/Playback Module 18 seconds (wired inside the radio with  a switch on the back to record 18 seconds and to play it back) $77
 Add a Small External Speaker
(plugs into back of the radio for improved sound)
 Add a Large External Speaker
(plugs into back of the radio for improved sound)

Your Gmail

Tune-up VIDEO. Make a completion video to show tune-up levels and modifications demo. Enter your Gmail so we can send a share to our Google drive for you to view. We upload twice monthly. $19



Model DX 2547
Frequency Range 26.965 - 27.405 MHz (40 Channels)
Emission Modes AM/USB/LSB
Frequency Control Phase Lock Loop (PLL) Synthesizer
Frequency Tolerance 0.005 %
Frequency Stability 0.001 %
Operating Temperature Range -30C to +50C
Microphone Dynamic PTT, 500 Ohms
Input Voltage (DC/AC Selectable) 13.8V DC / 110V AC 60Hz
Current Drain: Transmit (AM full mod.) < 3.5A
Current Drain : Receive (Squelched) 0.5A
Current Drain : Receive (Max. audio output) < 1A
Antenna Connector UHF; SO239
Dimensions 4-3/4"H x 11-1/4"W x 13-1/2"D
Weight 12 lb.
RF Power Output AM : 4W / SSB : 12W PEP
RF Transmit Modes AM/SSB
Modulation High and Low level Class B, Amplitude Modulation : AM and SSB
Spurious Emissions -60 dB
Carrier Suppression -60 dB
Audio Frequency Response 300 to 2500 Hz
Antenna Impedance 50 Ohms
Output Indicators Meter shows relative signal strength, RF output power, SWR and AM Modulation level. Transmit LED glows red when transmitter is in operation.


Sensitivity for 10dB S/N (AM/ SSB) < 0.5 mV / < 0.15 mV
IF Frequency AM: 10.695 MHz 1st IF, 455 KHz 2nd IF
Image Rejection -50 dB
Adjacent Channel Selectivity -60 dB
RF Gain Control 45 dB adjustable for optimum signal reception
Automatic Gain Control (AGC) Figure of Merit 100 mV for 10 dB Change in Audio Output
Squelch Adjustable; threshold less than 0.5 mV
Noise Blanker RF type
Audio Output Power 2.5W @ 10% THD
Audio Frequency Response 300 to 2500 Hz
Built-in Speaker 8 Ohms, 4 Watts
External Speaker (Not Supplied) 8 Ohms, 4 Watts


The item most overlooked when ordering a custom radio is the microphone.  Your new tuned radio will NOT
sound great  with a stock mic on it  If your CB is more than a tool for work, you NEED to upgrade your microphone. 
My personal favorites are the Astatic 636L and RD104E.

If you place an order from outside the continental USA, we will calculate your actual shipping and send you a PayPal payment request.  We do NOT export Antennas or Base station radios.


954-771-8161 Our Warranty and Return Policy   954-771-8161


BellsCB Radio, 5051 NE 12th Avenue, Oakland Park, Florida. 33334   (954)771-8161