RS - DX 394 on e - bay

RS - DX 394 on e - bay

Post by kamalakar pasupule » Thu, 04 Mar 2004 01:36:35

I find couple of Radio Shack DX 394 on e-bay , is it woth bidding
considering the technology . If yes how much should I bid ? Any
feedback is appreciated .

Kam

 
 
 

RS - DX 394 on e - bay

Post by Mark S. Holde » Thu, 04 Mar 2004 04:34:33



> I find couple of Radio Shack DX 394 on e-bay , is it woth bidding
> considering the technology . If yes how much should I bid ? Any
> feedback is appreciated .

> Kam

I checked out one a friend owned.  

Here's a link with basic information about the radio.  (Link says 302, but same page has 394)

<http://www.dxing.com/rx/dx302.htm>

They rate radios for "value" on a 1-5 star basis.  The 394 gets 1 star.  

Here's a link to the same site's table of contents with links to information about 100 or so of the more popular radios on the used market:

<http://www.dxing.com/rx/rxindex.htm>

Personally, if I was in the market for a budget priced table top I think I'd look at the Tentec RX-320.  Better performance, and generally available for about $200-225 on the used market.

 
 
 

RS - DX 394 on e - bay

Post by AbbN » Thu, 04 Mar 2004 06:21:18

Hi,

Here's another review of it - a good one. I had one and I liked it but I got
a "B" model on the insistence of a ham friend of mine. My best friend now
has it and loves it. You'll get good and bad comments on it in this group
but I was never sorry I bought it. As to what you should pay for it, I
wouldn't go more than $100 -  $125 for it. Also check to see if it has had
any modification to some. Some of these 394's an eBay have had the mods
done.

http://www.rnw.nl/realradio/dx394.html
--

Good Luck
Abb N
VE3003SWL
Windsor, Ontario, Canada


Quote:> I find couple of Radio Shack DX 394 on e-bay , is it woth bidding
> considering the technology . If yes how much should I bid ? Any
> feedback is appreciated .

> Kam

 
 
 

RS - DX 394 on e - bay

Post by the capta » Thu, 04 Mar 2004 08:18:45

as has been pointed out, the factory designed and supplied DX-394 is
full of problems. however there are some modifications that can fix
the 394. after that it is quite a full featured receiver if you pay no
more than $200. it is not worth $250 as I have seen some people pay.
at that point there are many other better values. but at $200 for a
modified one, that is a good value point.

> I find couple of Radio Shack DX 394 on e-bay , is it woth bidding
> considering the technology . If yes how much should I bid ? Any
> feedback is appreciated .

> Kam

 
 
 

RS - DX 394 on e - bay

Post by tom Hold » Thu, 04 Mar 2004 10:44:51


> I find couple of Radio Shack DX 394 on e-bay , is it woth bidding
> considering the technology . If yes how much should I bid ? Any
> feedback is appreciated .

> Kam

I have maintained a graph of Monthly average selling prices for
DX-394's since late October on the website of the DX-394 special
interest group at http://groups.yahoo.com/group/RADIOSHACKDX394/ .
Join 560 other members to see what you can learn about it. Links to
reviews, a cavalcade of mods, etc.

Tom

 
 
 

RS - DX 394 on e - bay

Post by WG » Thu, 04 Mar 2004 12:18:48

I got mine a few years ago and I must say that it is the best of all the RS
short-wave radios that I have owned. That isn't saying much. A squelch
circuit would have been nice as that the radio is very noisy. It has next to
no filtering and when you tune manually it pops at every point 1 of a KC. I
also find that it has a drift on SSB that it has had from the first day. It
is ok if all you want to listen to is VOA or other AM stations but no good
for the good stuff on short-wave. I use mine as a spare rig and my Yeasu as
a primary. I wouldn't pay more then $50.00 for one.


Quote:> I find couple of Radio Shack DX 394 on e-bay , is it woth bidding
> considering the technology . If yes how much should I bid ? Any
> feedback is appreciated .

> Kam

 
 
 

RS - DX 394 on e - bay

Post by mike maghakia » Thu, 04 Mar 2004 15:53:57

I just "built" one with two upgraded filters and some other bug fixes. it is
so superior to a stock unit ! the dual selectable filters are OUTSTANDING !
sold it for $205 including nice external speaker

I am the only one that I am aware of on the planet to build such an
outstanding 394. my other great 394 project was to build a portable capable
394. killer unit too !

got several more stock 394's coming so I can upgrade them too.

it is FUN to upgrade them and see how I have improved them !!!

Mike


Quote:> I find couple of Radio Shack DX 394 on e-bay , is it woth bidding
> considering the technology . If yes how much should I bid ? Any
> feedback is appreciated .

> Kam

 
 
 

RS - DX 394 on e - bay

Post by Tom Holde » Fri, 05 Mar 2004 13:47:52


> I just "built" one with two upgraded filters and some
> other bug fixes. it is so superior to a stock unit ! the
> dual selectable filters are OUTSTANDING ! sold it for
> $205 including nice external speaker

> I am the only one that I am aware of on the planet to
> build such an outstanding 394. my other great 394 project
> was to build a portable capable 394. killer unit too !

> got several more stock 394's coming so I can upgrade them
> too.

> it is FUN to upgrade them and see how I have improved
> them !!!

Upgrading DX-394's has been sport for many years. A search of Usenet
postings in r.r.s in particular shows the first reported upgrade - the Kiwa
filter - in late 1995. There are some 6000 messages posted in Usenet that
refer to the DX-394 (some may be just in the signature) - another 2300 in
the RADIOSHACKDX394 Yahoo!Group. The late 90's saw a flurry of
improvements - most of the key ones - pioneered mainly by the legendary
Frank Cathell who seems to have moved on to astronomy and other interests. I
sparked another round starting in mid-2002, posted many to www.mods.dk and
consolidated everything I could find at the RADIOSHACKDX394 SIG and its
offspring, DX-394C, which concentrates on computer control conversions. Mike
Maghakian has stimulated a lot of discussion with his filter upgrades, here
in r.r.s. and  the SIG. Another Mike, lowbander on ebay, has established a
solid reputation in doing cost-effective, intelligent upgrades, with over
500 DX-394 transactions on ebay.

In the last 5 months, DX-394's have sold on ebay for as little as $100 (a UK
auction last week) to as much as $275 for a modified one. You'll find my
average monthly price graph on the SIG website.

To the person who complained that his DX-394 is unstable in frequency: I
have 3 and they are all very stable - little apparent temperature drift and
quite solid through line voltage fluctuations.

Tom

 
 
 

RS - DX 394 on e - bay

Post by Mike Maghakia » Fri, 05 Mar 2004 14:59:40

all these issues are covered by easy fixes, if you don't want to do them
, then the DX-394 is NOT the radio for you. My 394 is selective (mod),
quiet (inherently), has no pops(mod) and is a very nice radio.

I would pay a lot lot more than $50 for one and buy a dozen at a time if
I could.

It is unfortunate that people like you spread so much misleading
information. It is the reason the 394 is SO misunderstood.

Mike


> I got mine a few years ago and I must say that it is the best of all the RS
> short-wave radios that I have owned. That isn't saying much. A squelch
> circuit would have been nice as that the radio is very noisy. It has next to
> no filtering and when you tune manually it pops at every point 1 of a KC. I
> also find that it has a drift on SSB that it has had from the first day. It
> is ok if all you want to listen to is VOA or other AM stations but no good
> for the good stuff on short-wave. I use mine as a spare rig and my Yeasu as
> a primary. I wouldn't pay more then $50.00 for one.



>>I find couple of Radio Shack DX 394 on e-bay , is it woth bidding
>>considering the technology . If yes how much should I bid ? Any
>>feedback is appreciated .

>>Kam

 
 
 

RS - DX 394 on e - bay

Post by WG » Fri, 05 Mar 2004 15:40:26

What is misleading about the truth. The rig is junk. You don't say what you
are comparing to. I have mine side by side with a Yeasu FT-100d and I must
say that even without the AM filter the Yeasu's receiver beats the 394's
hands down. You may want to look up some of the less then good reviews in
most of the radio publications. Radio Shack had to give them away at less
then 1/2 the list price in the last year of its run.


> all these issues are covered by easy fixes, if you don't want to do them
> , then the DX-394 is NOT the radio for you. My 394 is selective (mod),
> quiet (inherently), has no pops(mod) and is a very nice radio.

> I would pay a lot lot more than $50 for one and buy a dozen at a time if
> I could.

> It is unfortunate that people like you spread so much misleading
> information. It is the reason the 394 is SO misunderstood.

> Mike


> > I got mine a few years ago and I must say that it is the best of all the
RS
> > short-wave radios that I have owned. That isn't saying much. A squelch
> > circuit would have been nice as that the radio is very noisy. It has
next to
> > no filtering and when you tune manually it pops at every point 1 of a
KC. I
> > also find that it has a drift on SSB that it has had from the first day.
It
> > is ok if all you want to listen to is VOA or other AM stations but no
good
> > for the good stuff on short-wave. I use mine as a spare rig and my Yeasu
as
> > a primary. I wouldn't pay more then $50.00 for one.



> >>I find couple of Radio Shack DX 394 on e-bay , is it woth bidding
> >>considering the technology . If yes how much should I bid ? Any
> >>feedback is appreciated .

> >>Kam

 
 
 

RS - DX 394 on e - bay

Post by the capta » Sat, 06 Mar 2004 02:31:04

people get their R-75 modified to make it work. why not the same
leeway with the 394. judge a fixed one, not a stock one.

> What is misleading about the truth. The rig is junk. You don't say what you
> are comparing to. I have mine side by side with a Yeasu FT-100d and I must
> say that even without the AM filter the Yeasu's receiver beats the 394's
> hands down. You may want to look up some of the less then good reviews in
> most of the radio publications. Radio Shack had to give them away at less
> then 1/2 the list price in the last year of its run.

 
 
 

RS - DX 394 on e - bay

Post by Tom Holde » Sat, 06 Mar 2004 10:44:26


> What is misleading about the truth. The rig is junk. You
> don't say what you are comparing to. I have mine side by
> side with a Yeasu FT-100d and I must say that even
> without the AM filter the Yeasu's receiver beats the
> 394's hands down. You may want to look up some of the
> less then good reviews in most of the radio publications.
> Radio Shack had to give them away at less then 1/2 the
> list price in the last year of its run.

If it's "junk",
- why do you keep it?
- why do you use it?
- why don't you give it someone who appreciates it?
- why don't you sell it?
- why don't you throw it out?
- why don't you improve it? You'll be pleasantly surprised at the results.
- why don't you do something about it?

Comparisons: I have a Drake R-4B, great radio in its day, but the DX-394
beats it hands down when it comes to warmup time and drift, speed and
convenience of tuning, sensitivity above 15MHz and frequency range covered.
The R-4B wins on immunity to overload and selectivity - both front end and
IF - and it smells (that could be positive or negative) of warm dust and
resins.

Reviews: both the ARRL Lab and the Radio Netherlands rated it good value for
money, 4 stars from the latter, when it was still selling for $300, before
upgrades. The majority of personal reviews on eHam.net agree; a small
minority of extremists rate it the way you do.

Radio Shack consistently sells off old stock at half price or less. Seven
years after it was introduced, Radio Shack Canada cleared them out at what
was then around US$85. Nothing unusual in that. That's what got me going
again in this hobby. Why was there leftover stock? Perhaps they
overestimated the potential market for mid-range, tabletop communications
receivers. I daresay that more than 10,000 were manufactured - a large
number for this market - hence the RADIOSHACKDX394 SIG is one of the largest
receiver-specific communities, exceeded only by the DX-398 SIG.

Tom

 
 
 

RS - DX 394 on e - bay

Post by starma » Sat, 06 Mar 2004 12:23:37


> all these issues are covered by easy fixes, if you don't want to do them
> , then the DX-394 is NOT the radio for you. My 394 is selective (mod),
> quiet (inherently), has no pops(mod) and is a very nice radio.

> I would pay a lot lot more than $50 for one and buy a dozen at a time if
> I could.

What are the main weak points of the DX-394 that need to be addressed to
make it a decent receiver?

-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----==  Over 100,000 Newsgroups - 19 Different Servers! =-----

 
 
 

RS - DX 394 on e - bay

Post by Tom Holde » Sat, 06 Mar 2004 13:56:05



>> all these issues are covered by easy fixes, if you don't
>> want to do them , then the DX-394 is NOT the radio for
>> you. My 394 is selective (mod), quiet (inherently), has
>> no pops(mod) and is a very nice radio.

>> I would pay a lot lot more than $50 for one and buy a
>> dozen at a time if I could.

> What are the main weak points of the DX-394 that need to
> be addressed to make it a decent receiver?

By joining the RADIOSHACKDX394 SIG at
http://groups.yahoo.com/group/RADIOSHACKDX394/, you will automatically
receive the DX-394 FAQ and an index to over 50 mods. From the FAQ:

Best Mods
Much depends on your listening objectives and the radio frequency
environment in your area. The DX-394 is certainly deficient in the areas of
selectivity, overload and shielding so these are areas of improvement that
are probably of common interest and benefit. Other modifications may be of
more special interest. Here are the key mods and tips:
1. Frank Cathell's Crosstalk mods are a must to correct a design deficiency
in all models that results in strong stations 15-40 kHz away from the
desired frequency being detected as though they were on frequency.
2. One of the IF filter mods is also highly advisable - Frank's "Poor Man's
Kiwa" that changes the logic to force the narrower filter in all modes is
the easiest.
3. The DX-394 is susceptible to overload from strong signals and internally
generates multiple appearances of them. Countermeasures depend on the
desired frequency band and the frequencies of the offending signals:
a) For SW listening bothered by LW/MW overload, a 1.8 MHz outboard high pass
filter is a great start.
b) For SW listening suffering from SW overload, a passive pre-selector
(tuned or fixed bandpass) or a high quality active pre-selector may help on
SW bands removed from the interfering frequencies.
c) For LW and MW listening, it may be necessary to shield or disable the
built-in antenna and use a tuned loop external antenna for added selectivity
and directionality to discriminate against the strong signals.
d) An outboard attenuator may also be necessary in difficult conditions in
any of these cases.
Fortunately, apart from shielding or disabling the ferrite antenna, all of
these are tips, not modifications of the DX-394, but are covered under Mods
because overload is such a common problem.
4. Shielding is also essential for the suppression of interference picked up
from computers and CRT's operating in close proximity to the DX-394. Its
plastic case is useless in this respect - SW signals can be picked up even
with the whip antenna removed. Tom Holden's "Ultimate Shields" mod is among
the most effective for both RF and magnetic screening

Tom

 
 
 

RS - DX 394 on e - bay

Post by AbbN » Sat, 06 Mar 2004 22:53:26

Hi Tom,

I agree with you 1,000%. And I too saw the 4 star Radio Netherlands review
of the original DX-394 prior to buying it. Between that review and what my
ham friend thought of it (he had one of the original ones), I bought it. But
he insisted I  find a "B" model since they were the same discontinued price
here in Cananda. That receiver basically brought me back into SWL. I loved
it contrary to the frequent put down in this newsgroup of that receiver. I
added good external speakers and eventually a DSP-40 unit to it. Eventually
I graduated to a Sat-800. Now my best friend has it and he too loves it. It
serves his needs quite well.
To each his/her own.

Take Care
Abb N
VE3003SWL
Windsor, Ontario, Canada



> > What is misleading about the truth. The rig is junk. You
> > don't say what you are comparing to. I have mine side by
> > side with a Yeasu FT-100d and I must say that even
> > without the AM filter the Yeasu's receiver beats the
> > 394's hands down. You may want to look up some of the
> > less then good reviews in most of the radio publications.
> > Radio Shack had to give them away at less then 1/2 the
> > list price in the last year of its run.

> If it's "junk",
> - why do you keep it?
> - why do you use it?
> - why don't you give it someone who appreciates it?
> - why don't you sell it?
> - why don't you throw it out?
> - why don't you improve it? You'll be pleasantly surprised at the results.
> - why don't you do something about it?

> Comparisons: I have a Drake R-4B, great radio in its day, but the DX-394
> beats it hands down when it comes to warmup time and drift, speed and
> convenience of tuning, sensitivity above 15MHz and frequency range
covered.
> The R-4B wins on immunity to overload and selectivity - both front end and
> IF - and it smells (that could be positive or negative) of warm dust and
> resins.

> Reviews: both the ARRL Lab and the Radio Netherlands rated it good value
for
> money, 4 stars from the latter, when it was still selling for $300, before
> upgrades. The majority of personal reviews on eHam.net agree; a small
> minority of extremists rate it the way you do.

> Radio Shack consistently sells off old stock at half price or less. Seven
> years after it was introduced, Radio Shack Canada cleared them out at what
> was then around US$85. Nothing unusual in that. That's what got me going
> again in this hobby. Why was there leftover stock? Perhaps they
> overestimated the potential market for mid-range, tabletop communications
> receivers. I daresay that more than 10,000 were manufactured - a large
> number for this market - hence the RADIOSHACKDX394 SIG is one of the
largest
> receiver-specific communities, exceeded only by the DX-398 SIG.

> Tom