Ham Comms

I envision a ham radio network. Many to one, one to many, many to many and one to one. Voice, text, video. The ultimate communications medium. And it’s entirely possible.

Hams have a great deal in Canada. We are un-encumbered with restrictions that choke hams in other countries. This gives us a unique edge on ham technology compared to many other countries around the world. And we should take advantage.

Thoughts?

 

Kenwood TM-V71 Review

From ve3ugg.com: ****+ (4+ stars)

These are excellent radios. Probably the best cross banding radios available. A local ham and myself sometimes use our V71’s and the local VHF and UHF repeaters (or simplex) to have a completely duplex QSO šŸ™‚

Mine has been in a variety of 24/7 base use or all weather mobile basis for 3 years – no issues. No, sadly they don’t have fancy touch screens or APRS but they are rock stable and built like tanks. And they play well with computers – mostly. Despite what the documentation says, there is nothing special about “EchoLink Mode”. But the “data jack” works very well as do most in this class of radio.

They are very easy to use in a mobile. There’s only a few “buttons” and unlike some competitors, they are laid out with some thought. Dual VOL/SQ knobs, one for each A/B side. Very readable display in most conditions. They are easy to program either by computer (the free software works quite well) or in the field. The menu system is not “nested” (54 items) and it’s easy to find things.

As well, if you can find a TMD710 head unit – that accepts a GPS signal – you can replace the head of the V71 as the radio bodies are identical! Then you will have a complete mobile or base APRS unit.

The biggest issue is the modular microphone jack. It is very easy to break the tab off the modular jack of the mic and then it is ill fitting. I would have preferred an 8 pin mobile mic jack so this is why I gave it a 4+

If you can find a used one in good shape for $200 CDN, buy it.

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From a retailer:

Price: $419.95 CDN (at www.DurhamRadio.com)

 

The following was taken from the official Kenwood documentation… I think. It’s quite accurate at least.

FREQUENCY COVERAGE

RX: 118 – 524 MHz 136 – 524 MHz 800 – 1300 MHz * (*excluding cellular band)

TX: 144 – 148 MHz 430 – 450 MHz

RF Power Output

5/10/50 Watts on Both VHF and UHF

Dual Receive On Same Band (VxV, UxU)

In addition to simultaneous receive on both VHF and UHF bands, this radio can receive two frequencies on the very same band. This means, for example, that you can have both the call channel and local channel, or the repeater channel and local channel, on the same band.

Five-In-One, Programmable Memory

For extra versatility, the TM-V71A has a programmable memory that can store five entire operating profiles, ready for instant recall at the push of a button. Each profile includes such settings as display mode, frequency range, and memory mode. It can equally be used to switch between 5 VFO frequencies.

1000 Multifunction Memory Channels

There are 1000 split memory channels for storing essential data such as transmit and receive frequencies, frequency step, and tone frequency.

Plus an additional 10 for programmable scan. You can identify each channel with up to 6 alphanumeric characters (Memory Name function). Additionally, memory data can be edited and stored on a PC using the optional PG-5G programming interface cable and MCP-2A Memory Control software

Multiple Scan

As well as VFO scan, program scan, MHz scan, memory scan and call scan, the TM-V71A offers memory bank scan: the 1000 channels are grouped into 10 banks for selective scanning. Also featured are scan resume (time-operated, carrier-operated, and seek), memory channel lockout, tone scan, CTCSS scan, and DCS scan.

Invertible Front Panel

For greater installation convenience, the detachable front panel can be inverted so the transceiver can be mounted upside down, thus ensuring that the speaker is not obstructed.

Choice Of 2 Backlight Colours

To maximize visibility, the backlight colour for the large LCD panel can be switched between warm amber and cool green.

104-Code Digital Code Squelch

In addition to CTCSS (42 subtone frequencies), the TM-V71A is equipped for DCS (104 codes). Whatever code is chosen, the squelch will only open for reception if the other party uses the identical code.

Voice Guidance & Storage Option (VGS-1)

The audible announcement function is enabled for blind-key operation using the optional VGS-1 unit, which also provides up to 30 seconds of continuous recording.

Weather Alert/RX (US only)

This transceiver is capable of receiving the NOAA Weather Band and responding to emergency transmissions such as storm warnings by emitting an audible alert tone.

EchoLinkĀ® Sysop Mode For Node Terminal Operation

When the TM-V71A is connected to a PC (with the necessary Windows-compatible software installed) using the PG-5H option, it can operate as a node terminal for EchoLinkĀ®. EchoLinkĀ® connects radio amateurs through the Internet using VoIP technology: any transceiver with access to a node can connect to any other in the world as long as it too has node access. It is also possible to access the EchoLinkĀ® network directly from a PC. To register for EchoLinkĀ® (using your call sign), access the official website at www.echolink.org.

EchoLinkĀ® Memory (Automatic Dialer)

Up to 10 DTMF memory channels dedicated to EchoLinkĀ® can store call signs (or conference names) and Node Numbers.

 

 


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