pour les Ondes maoyennes, et /ou les Ondes courtes, peut ce genre
d'ampli suffir ??

http://www.selectronic.fr/article.as...r=70.0382-9999

Can this ampli for AM/ SW signals work well ??

http://www.selectronic.fr/article.as...r=70.0382-9999


There are others too :

http://www.selectronic.fr/article.as...r=70.5552-9999

http://www.selectronic.fr/article.as...ier=70.6122-19

which one would be best ??

Are there other ready built boxes on the market (in Europe ?)

Thanks,
Marc

50 BALLES çA !!!!!

switcher wrote:
pour les Ondes maoyennes, et /ou les Ondes courtes, peut ce genre
d'ampli suffir ??

http://www.selectronic.fr/article.as...r=70.0382-9999

Can this ampli for AM/ SW signals work well ??

http://www.selectronic.fr/article.as...r=70.0382-9999


There are others too :

http://www.selectronic.fr/article.as...r=70.5552-9999

http://www.selectronic.fr/article.as...ier=70.6122-19

which one would be best ??

Are there other ready built boxes on the market (in Europe ?)

Thanks,
Marc

Acactly what frequencies are you trying to amplify and perhaps more
importantly,
why are you amplifing them?

For LF/MW/HF, unless you are using a loop or a short active antenna,
which
will already have an amp, further amplification will almost alway lead
to
overlaod and other unpleasentness.
At least we need to know:
what type receiver(s) you have.
what type antenna are you planning on using.
what frequencles are of interest.

It is very hard to get a single amp to cover the LF (100KHz) ~ upper
HF(30MHz).
When you try to go higher, small simple general purpose amps simply
suck.
6Meter amps are very different from 10Meter/28MH. FM, 88~108MHz over
here
in the USA are a whole different beast. While it is simple tp design
and build a
wide bandwidth amplifier, they all tend to fold when exposed to the
wide range
of signals delivered by an antenna.

Terry

In article .com,
wrote:

switcher wrote: Can this ampli for AM/ SW signals work well ??

http://www.selectronic.fr/article.as...r=70.0382-9999




Acactly what frequencies are you trying to amplify and perhaps more
importantly,
why are you amplifing them?

I see that the ampli on the degen antenna does good ..
I live in a place where the noise floor is LOW .. So ampli makes sense.

I saw that when on holliday in urban regions my am loop didn't add
anything to reception with a sony 7601 ...

I want to ampli freqs like the AM 500-1700Khz, but also SW 6MHZ-17Mhz ..


For LF/MW/HF, unless you are using a loop or a short active antenna,
which
will already have an amp, further amplification will almost alway lead
to
overlaod and other unpleasentness.
At least we need to know:
what type receiver(s) you have.
I intend to use the amplified ant with a drm receiver ..

what type antenna are you planning on using.

loops on AM & SW

what frequencles are of interest.
AM & SW


Thanks,
Marc

comme on te dit un peu plus bas , une antenne cadre reste la meilleurs
solution pour les GO et OM...

JFG a écrit:
50 BALLES çA !!!!!