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 Amateur Radio Frequency Measurements:

 

 0-500MHZ LCD Power Meter with Data Logger

 

Please Consider New Project: PM4 Graphic LCD RF Meter

 

PM3A USB: 0911

PM3A RS232 is here.....

PM3A USB: Rev 0912

Following added to PM3A USB:

1.   LCD mounts on CPU Board directly  

2.   USB Powered

3.   "Add-on" FTDI Module available for PC Connectivity

4.   Encoder and 2 Push Buttons for menu operation  

5.   AD8307 SO8 is now within main CPU board

6.   Pre-Soldered AD8307 SMT

7.   Data output to PC thru FTDI232RL Add-On module.  

8.   Precession 2.5V reference added.

9.   Another AD8307 SO8 for second channel may be added by user

10.  LCD Back-Light may now be turned off to save power.  

11.  Works well with G4HFQ "Polar Plot" Software

12. PM3A USB kits & assembled are supplied with a Free Powder coated metal case. (Always verify for metal case stock)

 

A 40db Attenuator for this RF Meter is available

Calibration Guide by K7SFN

 


 
Completed PM3 USB LCD RF Power Meter:

Click the image to enlarge


 

RF Meter/Data Logger: LCD & Keyboard Removed

Click the image to enlarge


PM3A USB:  Bottom Side

Click the image to enlarge


Remote LCD with FRC Connectors/Ribbon Cable:


 

Main Screen of the 2X20 LCD RF Meter:
 
Menu & Selection Window:
  
DC Volt Meter Display:
PM3A USB Schematics, Details & Parts List:
 
  
PM3A USB RF Meter Doc. 0-500MHZ RF Sensor Document
 
PM3A USB Schematic & Kit Parts List 0-500MHZ RF Sensor Document
   
PM3A USB Schematic JPG
 
PM2/3/3A Menu Config. Doc. 0-500MHZ RF Sensor Document
 
PM3A Menu Config for V1.03 by K7SFN 0-500MHZ RF Sensor Document
 
PM3A Menu Config for V1.04
 
Windows Data Logger Program Download Analog Device AD8307 Datasheet
 
G4HFQ Polar Plot Download page Analog Device AD8307 Datasheet
  
Download HEX for 16F876A: V1.04

Analog Device AD8307 Datasheet

 
Download HEX for 16F876A: V1.03

Analog Device AD8307 Datasheet

   
Project Datasheet 

Analog Device AD8307 Datasheet

 

 
  
PM3A USB Kit with AD8307 Pre-Soldered End of Project

Please consider PM4

PM3A-USB Kit Parts List 
Buy Project PCBs From School Project Web Site
 

 

 


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