Great New DX-394 Mods & Website (DX-398/ATS-909/FRG-7 coming)

Great New DX-394 Mods & Website (DX-398/ATS-909/FRG-7 coming)

Post by Tom Holde » Sun, 10 Apr 2005 00:00:33

Checkout http://www.monitor.co.uk/ . I just discovered it, appears to be
very new. Well organized, clean, clear photos, graphics, descriptions of why
and how-to for modifications to the Radio Shack/Tandy DX-394 General
Coverage Communications Receiver. Also has PDFs of manuals and schematic.

Along with the 850 plus member user group at
http://groups.yahoo.com/group/RADIOSHACKDX394/ and the collection of mods at
http://www.mods.dk/view.php?ModelId=573, this new site helps make the DX-394
the most thoroughly hacked, researched and documented radio in the world.

Tom

 
 
 

Great New DX-394 Mods & Website (DX-398/ATS-909/FRG-7 coming)

Post by roge » Sun, 10 Apr 2005 00:49:36


And also the biggest load of junk on the market
Sw


Quote:> Checkout http://www.monitor.co.uk/ . I just discovered it, appears to be
> very new. Well organized, clean, clear photos, graphics, descriptions of
> why and how-to for modifications to the Radio Shack/Tandy DX-394 General
> Coverage Communications Receiver. Also has PDFs of manuals and schematic.

> Along with the 850 plus member user group at
> http://groups.yahoo.com/group/RADIOSHACKDX394/ and the collection of mods
> at http://www.mods.dk/view.php?ModelId=573, this new site helps make the
> DX-394 the most thoroughly hacked, researched and documented radio in the
> world.

> Tom

 
 
 

Great New DX-394 Mods & Website (DX-398/ATS-909/FRG-7 coming)

Post by Mike Le » Sun, 10 Apr 2005 01:29:44


> And also the biggest load of junk on the market
> Sw



>>Checkout http://www.monitor.co.uk/ . I just discovered it, appears to be
>>very new. Well organized, clean, clear photos, graphics, descriptions of
>>why and how-to for modifications to the Radio Shack/Tandy DX-394 General
>>Coverage Communications Receiver. Also has PDFs of manuals and schematic.

>>Along with the 850 plus member user group at
>>http://groups.yahoo.com/group/RADIOSHACKDX394/ and the collection of mods
>>at http://www.mods.dk/view.php?ModelId=573, this new site helps make the
>>DX-394 the most thoroughly hacked, researched and documented radio in the
>>world.

>>Tom

I find the site pretty good myself.

Mike.

--
http://uk.geocities.com/swift240/mikes_page_1.html

 
 
 

Great New DX-394 Mods & Website (DX-398/ATS-909/FRG-7 coming)

Post by PowerHouse Communication » Sun, 10 Apr 2005 02:53:06

I'm quite positive he was talking about the radio, not the site...


> I find the site pretty good myself.

> Mike.

> --
> http://uk.geocities.com/swift240/mikes_page_1.html


> > And also the biggest load of junk on the market
> > Sw



> >>Checkout http://www.monitor.co.uk/ . I just discovered it, appears to be
> >>very new. Well organized, clean, clear photos, graphics, descriptions of
> >>why and how-to for modifications to the Radio Shack/Tandy DX-394 General
> >>Coverage Communications Receiver. Also has PDFs of manuals and
schematic.

> >>Along with the 850 plus member user group at
> >>http://groups.yahoo.com/group/RADIOSHACKDX394/ and the collection of
mods
> >>at http://www.mods.dk/view.php?ModelId=573, this new site helps make the
> >>DX-394 the most thoroughly hacked, researched and documented radio in
the
> >>world.

> >>Tom

 
 
 

Great New DX-394 Mods & Website (DX-398/ATS-909/FRG-7 coming)

Post by Tom Holde » Sun, 10 Apr 2005 04:30:07


Quote:> 5. DXing.com Modern Shortwave Receiver Survey
> DX-394 is below the DX-302 on the same page. Rating was increased from 1H
> to 3H about Jan 28/2004.
> http://www.dxing.com/rx/dx302.htm

Correction: the rating was increased about Jan 28/2005, not 2004, correcting
an obvious mistake. This longstanding, unsubstantiated 1H rating on
DXing.com probably adversely affected the opinions of some uninformed
individuals.

Tom

 
 
 

Great New DX-394 Mods & Website (DX-398/ATS-909/FRG-7 coming)

Post by roge » Sun, 10 Apr 2005 05:00:07

A rating of 3 is still crap!




>> 5. DXing.com Modern Shortwave Receiver Survey
>> DX-394 is below the DX-302 on the same page. Rating was increased from 1H
>> to 3H about Jan 28/2004.
>> http://www.dxing.com/rx/dx302.htm

> Correction: the rating was increased about Jan 28/2005, not 2004,
> correcting an obvious mistake. This longstanding, unsubstantiated 1H
> rating on DXing.com probably adversely affected the opinions of some
> uninformed individuals.

> Tom

 
 
 

Great New DX-394 Mods & Website (DX-398/ATS-909/FRG-7 coming)

Post by Tom Holde » Sun, 10 Apr 2005 04:47:24

They sure do, Frank! I sent the webmaster a message complimenting him on his
work with the comment that the one thing missing was credit to the inventors
of the mods, "from the pioneering Frank Cathell to whoever had developed
these new ones I had never seen before". I have no idea who is behind the
site and whether it's motivated by anything other than enthusiasm to share
what he/she has done. It's first class, all the way.

73, Tom


Well done site!  Damn, some of these mods look familiar!

Frank

 
 
 

Great New DX-394 Mods & Website (DX-398/ATS-909/FRG-7 coming)

Post by roge » Sun, 10 Apr 2005 06:27:24

Hey, Tom! I'm only having a laugh, they are OK, I got one myself. nice to
see you not rise to the bait. :-))
regards
SW




>> 5. DXing.com Modern Shortwave Receiver Survey
>> DX-394 is below the DX-302 on the same page. Rating was increased from 1H
>> to 3H about Jan 28/2004.
>> http://www.dxing.com/rx/dx302.htm

> Correction: the rating was increased about Jan 28/2005, not 2004,
> correcting an obvious mistake. This longstanding, unsubstantiated 1H
> rating on DXing.com probably adversely affected the opinions of some
> uninformed individuals.

> Tom

 
 
 

Great New DX-394 Mods & Website (DX-398/ATS-909/FRG-7 coming)

Post by Tom Holde » Sun, 10 Apr 2005 06:36:16


Quote:>A rating of 3 is still crap!

Not according to DXing.com who gave it 3: " A rating of 1 to 5 stars for the
model as a value on the used market.
HHHHH Excellent HHHH Very Good HHH Good HH Fair H Poor. "

That Panasonic RF-4900 you sold for 85.90 is rated by the same folks at 2
(HH) - that's closer to crap, but still 'Fair'. On Mar 30, you posted that
you wanted to swap it for a DX-394
http://groups.google.ca/groups?q=rogers.mail%40ntlworld.com&start=10&... .
Sounds like an upgrade from a 'Fair' to a 'Good' value radio and
inconsistent with your expressed opinion.

The Kenwood R-2000 you were selling off in 2003 is rated at 4 (HHHH) by
DXing.com. That's 1H more than the DX-394 and it sells for 2-3 times the
price on the used market. Just a little less crappy, was it? ;-)

73, Tom

 
 
 

Great New DX-394 Mods & Website (DX-398/ATS-909/FRG-7 coming)

Post by roge » Sun, 10 Apr 2005 06:48:25

Seems like you did rise to the bait then Tom
Just shows what a sad b*****d you really are, doesn't it. :-))
SW




>>A rating of 3 is still crap!

> Not according to DXing.com who gave it 3: " A rating of 1 to 5 stars for
> the model as a value on the used market.
> HHHHH Excellent HHHH Very Good HHH Good HH Fair H Poor. "

> That Panasonic RF-4900 you sold for 85.90 is rated by the same folks at 2
> (HH) - that's closer to crap, but still 'Fair'. On Mar 30, you posted that
> you wanted to swap it for a DX-394
> http://groups.google.ca/groups?q=rogers.mail%40ntlworld.com&start=10&... .
> Sounds like an upgrade from a 'Fair' to a 'Good' value radio and
> inconsistent with your expressed opinion.

> The Kenwood R-2000 you were selling off in 2003 is rated at 4 (HHHH) by
> DXing.com. That's 1H more than the DX-394 and it sells for 2-3 times the
> price on the used market. Just a little less crappy, was it? ;-)

> 73, Tom

 
 
 

Great New DX-394 Mods & Website (DX-398/ATS-909/FRG-7 coming)

Post by Butc » Sun, 10 Apr 2005 09:52:34

Never run into this problem before, I have a nicad charger that Ive used
for years and it charges AAA, AA, C, D, and 9 volt.  Great little box.
Now I just received a pack of Ni-MH AA size and need to know if my nicad
charger will be ok to charge them?  Will I do damage to the NiMHs?

Butch KF5DE




>>5. DXing.com Modern Shortwave Receiver Survey
>>DX-394 is below the DX-302 on the same page. Rating was increased from 1H
>>to 3H about Jan 28/2004.
>>http://www.dxing.com/rx/dx302.htm

> Correction: the rating was increased about Jan 28/2005, not 2004, correcting
> an obvious mistake. This longstanding, unsubstantiated 1H rating on
> DXing.com probably adversely affected the opinions of some uninformed
> individuals.

> Tom

 
 
 

Great New DX-394 Mods & Website (DX-398/ATS-909/FRG-7 coming)

Post by Dave Pla » Sun, 10 Apr 2005 11:39:59



>Never run into this problem before, I have a nicad charger that Ive used
>for years and it charges AAA, AA, C, D, and 9 volt.  Great little box.
>Now I just received a pack of Ni-MH AA size and need to know if my nicad
>charger will be ok to charge them?  Will I do damage to the NiMHs?

As I understand it:  NiMH batteries do "prefer" a somewhat different
charging regime than NiCd batteries - they're less tolerant of being
overcharged.

A NiCd "smart" charger will usually charge the batteries with a
constant current, and monitor the voltage across the battery.  When
the batteries hit full charge, they begin to heat up, and the voltage
across them decreases somewhat.  The charger will detect the voltage
drop (a "negative delta V") and shut off the charge.  Fast chargers
usually include a temperature sensor, as well, and a failsafe timer.

NiMH batteries can be charged with a similar regime, but it's
apparently not a good idea to wait until the delta-V goes negative...
by that point the NiMH battery has heated up quite a bit, and that's
not good for its lifetime.  A NiMH smart charger will cut off the
charge current when the voltage across the battery stops rising ("zero
delta V"), before the battery heats up very much.

NiCd batteries can be trickle-charged at a low rate, and I believe
I've read that this is not a good approach to use for NiMH batteries
(or, if you do it, the trickle current must be a good deal lower).

See if you can find the data sheet for the Maxim MAX712 and MAX713
charge controller chips - they have a lot of the details.

--

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