Modifications for the Yaesu VX-5R

 

Some modification does not work.!!
You can extend the transmit freqs of the 2800 simply by powering on the radio holding the Low and D/MR.

This will only work untill you shut the radio off again. This really works.

Before you modify your radios try this. It is a little annoying but a whole lot cheaper. Plus you do not void your warranty.

It really works, trust me. This guy knows what he is talking about. It is really useful because i often travel on the lake near my house and there is a lot of police and marine traffic and i cant afford a marine radio for now and of course i cant buy a police radio and I could easily transmitt on 156.8 in an emergency.

 

IDIOT" - mod for VX-5R
Turn Your VX-5R while holding down MR/skp/sc key. You kan hear the special sound. Now your rig is in IDIOT -mod. Only large digits on the display, may be used only MR mode, user can change only squelch and TX power. No more! VFO, the preferencies and other features are blocked.

Now you can give it to police officer, your old grandmother or to your wife for simple use.

To cancel: turn off, turn on while holding MR. You have your VX-5R back for normal use.

73 de OH5GFZ

View or Download in PDF

VX-5R MARS/CAP & freeband mod for Version 1, 2 & 3

Version S/No
7NXXXXX
8NXXXXX
9FXXXXX
 

VX-5R
VERSIONS 1& 2
7Nxxxxx
8Nxxxxx

 

  1. Remove battery.

     
  2. Remove the cover for Pressure Sensing Unit [SU-1]. Refer to owner’s manual.

     
  3. Remove the SU-1 if installed.

     
  4. Locate the solder pads on back of the transceiver.

                          

Solder pad configuration for USA Mars/Cap mod.
X = not soldered
O = soldered

XXXOOOXX-Factory
XXXXOOXX-Mars/cap
XXXXXXXX-Freeband

VERSION 3
9Fxxxxx

Solder pad configuration for USA Mars/Cap & Freeband mod.
X = not soldered
O = soldered

XXXOOXXX-Factory
XXXXOXXX-Mars/Cap
XXOXOXXX-Freeband

This article can also be found as a PDF file at http://www.users.bigpond.com/vk3xem/mods/vx5rmods.pdf.

 

VX-5R expanded frequency mod
After performing the reset on a VX5-R (pressing [VFO] + [MR] + [4] + [PWR], the radio only receives and transmits in the 6M, 2M and 79cm hambands, try this to restore full coverage:

Press [BAND] + [HM/RV] + [TX PO} and [PWR] simultaneously.

I had to do this to restore all 11 bands and enable out of band Transmit after performing the VX-5R expanded frequency mod.

Kirk Ellis KI4RK

 

VX-5R Loose antenna "cure"
My VX-5R like many others had a chronic loose antenna.

I bought a male smc connector with a 6 point nut for 3.00 at a hamfest and replaced the old spanner type nut with the 6 point. I also used the small washer that came with the new connector under the nut. Using a 8mm - 6 point Craftsman thinwall socket and a firm but gentle twist is all it takes to snug the nut down.

It has been over 2 months and several antenna swaps and the connecor is still tight.

This simple and cheap mod has made the radio much more enjoyable and no more worry about blowing the finals.

One final note: The socket needs to be a quality 6 point thin-wall. The Craftsman 12 point and even their 6 point nut driver would not drop into the antenna recess. I imagine any higher quality 6 point socket should work just fine.

Good luck and 73
Glenn Cerny KB9WCM

 

Vx-5r Free Band
Mod for the new generationīs of Vx-5r serial no. 0E280926
  1. I locate solder pads on lower side
  2. My Vx-5 have solder the 4th and the 5th pad
    I remove solder from the 5th pad
  3. I reset my radio.

Now my Vx-5 is free band tx-rx

73īs CE3SUR, Humberto Gonzalez

 

VX 5 R modification for German
Mod for the German Version to use the 6m Band
  1. Remove Battery and the cover for Pressure Sensing Unit ( SU - 1 )
    Locate solder pads on lower side
    Remove solder from the 6th pad and the 8th pad ( counting left to right )
    Now soldering the 7th pad
    Reasemble the radio and reset the microprocessor

Mod complete

Viel Spass !!!

 

Use Nokia 7110 Belt Clip for an VX-5R
This is Very Easy, just use Handphone BeltClip with a litle modification you can Use it for Yaesu Vx-5R (I used Belt clip for Nokia 7110).

Here is the picture show you how to do it

                       

TX frequency expansion
Looking at the other mods on the internet for this rig, if you find the 8 solder pads behind the barometer lid; unsolder the middle two that appear to be shorted.

Then reset the microprocessor. Check your owner's manual for reset procedure.

Mod complete.
Excellent coverage!

TX 108-221.950 MHz & 303-580 MHz.

 

Expanded range for VX5R
Expanded range
RX 137 - 174 MHz
TX 140 - 174 MHz
TX 420 - 470 MHz
  1. Remove Battery and Antenna .
    Remove the cover for Pressure Sensing Unit (SU-1). See Owner Manual
    Remove the SU-1 Option board (if installed)
    Locate solder pads on lower left side.
    Remove solder from the fourth pad from the left (JP5)
    Reassemble the radio
    Reset the microprocessor. (Press and hold [ MR ] & [ VFO] & [4 ] and turn on the radio.

 

PC software MARS/CAP or FREEBAND mods.
You can do mods with EVE-software. It possible modifying MARS/CAP or FREEBAND (full tx )This modification don't needs soldering. This modification doing virtual jumpers, and you can reset the radio and you can get factory settings. The current version of EVE is 1.70. You can download EVE here http://kb2ljj.serveftp.com/yaesu/yaesu-software

 

VR-2 and VR-5 Interface and cable connection

                                

                              

Here you will find free programming software for various handheld radios.
  Basic cable setups for the different radios: Remember, you can use a USB to TTL cable in place of the RS-232 to TTL cable. (see below)

 
VX-5R Expanded frequency
Remove the battery pack, beneath where the pack was, is a black cover (heavy duty paper) it's just stuck and is removable to install the optional barometer/temperature module.

Remove this and you'll see 8 solder pads, for some reason some have 3 pads bridged, in my case there were 4 bridged. In either case unsolder the 5th pad counting right to left. Do a full reset, tha's it HT is now open.

 

Some modification does not work.!!
Some has reportet to www.mods.dk that the following modification frm YAESU VX-5R maybe NOT WORK with NEW radios:

"VX-5R Expanded frequency"
"PC software MARS/CAP or FREEBAND mods."
"Expanded range for VX5R."

It looks like Yaesu has change in the radio, so they not can be modify by the above modification

 

Yaesu VX-5R Mods in PDF

  Click to download the modification in PDF system file    

      VX5R.pdf Mods

 


ATTENTION
The KB2LJJ takes no responsibility for any damage during the modification or for any wrong information made on this modification.