[App_rpt-users] Fw: Chinese Radios For Nodes

[Kevin Custer]

I must have to respectfully disagree with Kirk as well.  Many times, 
from a real repeater site, communications can be done with very little 
power.  A local coverage node (inside ones house) can be done on low 
power as well.  The UV-5R will handle multiple 3 minute key-downs on low 
power without turning into a plastic blob (remote base operation).  
CTCSS hides most receiver inadequacies.

Not everyone has ready access to programming hardware and software need 
for a Maxtrac or Radius, so these cheap Chinese radios can be moved in 
frequency without effort.  Sure, they're not a Motorola, but many times 
users of AllStar don't necessarily need a Motorola quality radio.

That said, one of my most favorite radios for dedicated linking is a 
MaraTrac.  The VHF 100 Watt model usually is very cheap and it's easy to 
convert them to a lower powered unit by snipping out several components 
and using solder wick to 'bypass' the 2 final transistors.  You end up 
with a 15 Watt unit that will last almost forever.

Bottom line - it's all in what you want and need.

Kevin - WJ8G


> No need to re-thing this Kirk.  It would work fine for a simple node. 
> Now if you wanted to monitor the Win System with 100% duty cycle, you 
> may have a point. But that is not the intent of my posting.
> 73
> Jim W7RY
> *From:* Kirk Just Kirk <mailto:wb6egr at gmail.com>
> *Sent:* Monday, February 11, 2013 9:35 PM
> *To:* Jim W7RY <mailto:w7ry at centurytel.net>
> *Subject:* Re: [App_rpt-users] Chinese Radios For Nodes
> i dont mean to be disrespectful...but WHY would you use a POOR 
> PERFORMING UV-5R when for less than $50 you could use a Maxtrac or 
> Radius mobile?????
> RCVR performance is dismal at best with poor image rejection,lousy 
> dynamic range and the selectivity of a barn door?
> The first time it stays keyed for 10 minutes you will be the proud 
> owner of a colorful chinese blob of smoldering plastic....
> Seriously...rethink this???
> Kirk (WB6EGR)
>
>
> On Mon, Feb 11, 2013 at 7:29 PM, Jim W7RY <w7ry at centurytel.net 
> <mailto:w7ry at centurytel.net>> wrote:
>
>     I found this schematic on line for a UV5R.
>     http://files.radioscanner.ru/files/download/file14137/shema-baofeng-5r.pdf
>     There is COR voltage along with some transistors that control the
>     TDA-2822 audio chip. There is also a discrete volume control too.
>     So you can get fixed de-emphasised RX audio to drive a URI. So it
>     looks like the UV5r would be a good candidate for a node radio and
>     long as you use the internal PL decoder which would be fine.
>     73
>     Jim W7RY
>

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