VX-7R-Yaesu amateur walkie talkie mods and info

Yaesu VX-7R

Quick hints…
F + pwron = clone
4 + band + vm + pwron (then F) = reset
band + vm + pwron (then F) = set mode reset
vm + pwron = display test (turn knob)
band + pwron = toggle between “normal” mode & “memory only” mode
internet + pwron = unknown toggle that displays a “U” on the upper left of the power-on splash screen
monf + hmrv + internet key + pwron = seems to be an undocumented way to enter reset mode

VX7R jumper settings-found behind battery (behind plastic cover under battery)
Jumper 1,2,3,4,6,7,8 unset + Jumper 5 set = TX/RX only in US ham bands
all Jumpers unset = Euro freeband mode
all Jumpers unset except for 3 = Euro freeband mode
Jumpers 2,4,5,7 set = Euro stock mode (50-52mhz rx, 144-146 tx/rx, 430-440 tx/rx)

Yaesu VX-7R alignment

Alignment:For this to work, power up the radio. After its powered up hold down the “Main” key so it shows just
the VHF VFO on the display. This will not work if both VFO’s are showing on the display !

Once this is done, power down the radio, then:
Hold down MONI/F + INTERNET + 0 then press the power button.
V/M to change
Press MONI/F to select power & deviation levels for low-end and high-end of the band
Pres F HM/RV to save changes and exit

Default values:               50   52   54  144  145  148  220  222  225  430  435  440

PLL REF                                                          123
HIS SQL               0              0              0              0
THLD SQL            170            172            172            160
TIGH SQL            108            138            138             78
S1 LEVEL (NFM)       36             32             32             50
S9 LEVEL (NFM)       72             68             68             84
S1 LEVEL (WFM)       60             58             58             72
S9 LEVEL (WFM)       82             80             80             94
HI POWER       147       145  145       147  145       147  203       206
L3 POWER       113       112  114       116  114       116  154       155
L2 POWER        82        83   88        89   72        72  113       113
L1 POWER        52        52   56        56   57        59   59        60
MAX DEV        113       113   81        72   41        37   41        38
TN 67.0         45        54   57        56   10        12   89        88
TN 123.0                                                     40        47
TN 151.4                       16        16   19        19
TN 167.9        11        16
TN 254.1         8        11   13        14   22        22   22        19
DCS DEV         40        29   12        11   11        10    6         5
LCD TC V                   2              2         2                   2
LCD IREG                   4              4         4                   4

Deviation settings 

MAX DEV (6m): 81=3.5kc  100=4kc  105=4.5kc
MAX DEV (2m): 81=4.5kc
MAX DEV (220): 39=4kc  42=3.5kc  45=4.2kc  46=4.3kc  47=4.5kc
MAX DEV (440): 38=3.5kc  50=5kc  47=4.2kc  49=4.5kc


IC-9100 Front panelIcom IC-9100
Features that make most hams smile with delight. I will be adding one to my shack if possible! (they are not for sale yet, FCC thing). This really is an impressive and feature rich radio.  I can not wait to see one in action!

Multiple-band, multiple-mode
HF to 1200MHz Mutli-band in one transceiver
The IC-9100 fully covers the HF/50, 144, 430/440 amateur bands in multiple modes. By installing the optional UX-9100 1200MHz band unit, you can be operational on the 1200MHz band immediately.

Independent dual receivers
The IC-9100 has two independent receivers in one radio and receives two different bands simultaneously. In addition, the main and sub-band audio can be controlled with independent volume and squelch knobs, and received audio can be heard separately when external speakers are connected.

Satellite mode operation
The satellite mode synchronizes the uplink (transmitting) and downlink (receiving) frequencies, and tracks the frequencies in the same tuning step. This function matches both normal and reverse mode satellites. Compensation of the Doppler effect can be performed easily. 20 alphanumeric satellite memory channels store frequencies, mode and tone settings for quick set-up.

■Built-in voice synthesizer announces operating frequency, mode and S-meter level
■User programmable band edge beep (can be disabled)
■VSC (Voice Squelch Control) function
■AFC function (FM/DV mode)
■RF speech compressor
■Microphone equalizer and adjustable transmit bandwidth
■Two preamplifier types for HF/50MHz bands: Preamp 1: Increases low level signal improving intermodulation characteristics, Preamp 2: High gain preamplifier
■20dB built-in attenuator
■CTCSS and DTCS tone encoder and decoderic-9100 bandscope
■Triple band stacking register
■Quick split function and frequency lock function
■RIT and ΔTx variable up to ±9.999kHz
■Audio equalizer function
■SSB/CW synchronous tuning automatically shifts the carrier point when switching between CW and LSB/USB modes
■1Hz pitch tuning and display
■Program scan, memory scan, select memory scan, mode select scan and Δf scan
■Automatic tuning steps
■9600bps data socket
■AH-4 control circuit
■Automatic repeater function* and one-touch repeater function.
ic-9100 satellite mode display

ic-9100 rear panel

Solar Power for Amateur Radio

Solar Power for Amateur Radio
Powering radio communications equipment using solar energy.

1. Are there any special considerations when using amateur radio gear on solar power?

Yes, there are some issues. Many solar charger controllers actually will generate RF noise when charging. This is most common with pulse width modulated (microprocessor controlled) charge controllers. Sometimes this can be controlled with wire shielding and/or good grounding/DC filtering. RF noise output may vary depending upon battery state of charge (usually less when batteries are near full, depending upon the charger PWM protocol).

2. What are the advantages of solar power for radio communications?

Solar power is ideal for radio communications as the DC power does not introduce line noise or 60 cycle hum. Isolation from the grid (in most installations) also will assure relative immunity from grid power surges. Using solar energy as a power source actually fulfills a prime mission of amateur radio: reliable emergency communications. Solar powered communications will function when everything else is off[line. Solar power can also keep a standby battery bank constantly topped-off and ready to use in the event of a power failure. UPS inverters are also available that switch power over to solar power upon a quarter-cycle failure of the 110VAC grid.

3. What kind of installation will I need to power my home amateur radio station using solar power?

This certainly depends upon the loads you intend to support. Most radio communications needs are used for a limited timeframe daily and the duty cycle (time in transmit) is usually low. Therefore a solar installation with around 200W of panels and 300 to 500 Amp-hours of battery capacity will usually be sufficient (your mileage may vary).

4.How about remote base or repeater operations?

We can set you up with the right panel sizing as well as the charge controller, metering and advice on setting your system up for long reliable service. The average amateur or commercial remote base will do fine with between 100 and 300 watts of panels and around 200 to 400AH of batteries. Actual sizing depends upon the duty cycle of use and load sizing. Any remote base needs low voltage disconnect and temperature compensation at a minimum. Good grounding and lightning suppression is also important.


Icom ic-v8000I use this radio on a daily basis… It really puts out the watts when your in a hole… Hit high power and hole no more!  It is a strong addition to my mobile arsenal for keeping in touch! Check out some of the key features that sold me on the Icom ic-V8000.

75W of output power
The combination of Icom’s one piece, die-cast aluminum chassis and 75W of transmit power gives you the most powerful 2m mobile transceiver in its class! Your communications will get through.

HM-133V, remote control microphone
The backlit HM-133V*, gives you control of your IC-V8000 in the palm of your hand. The Icom exclusive “Hot keys” (F1/F2) memorize the transceiver full settings. As if switching between two separate radios, all operating frequencies, tone settings as well as the display color, fan speed, and set mode settings are memorized.
* Optional for some versions.

Dynamic Memory Scan (DMS)
With 200 alphanumeric memory channels, Icom’s exclusive DMS system gives you flexibility over your scanning lists never offered before in a 2m mobile, fully customizable into 10 banks.

CTCSS and DTCS operation standard
50 CTCSS and 104×2 DTCS encode/decode plus tone scan functions for various communication applications. The “pocket beep” feature gives you an audible and visual indicator of an incoming call.