"Volker Tonn" wrote in message
...
Lucky schrieb:

I have the FRA-7700


I have it too :-)
I have nodified it to feed an external antenna with BNC connector. So it
makes a fine selective HF preamp. I've this thing cascaded with the
FRT-7700.
It works fine with my Sony but it doesn't make anything better on my
NRD-525.


You can run it active with a 9 volt battery too.
But, the 150 has a built in preamp. But that's only for the whip right?
Still, you can clip a longwire to the antenna.

Lucky

Lucky schrieb:


You can run it active with a 9 volt battery too.
But, the 150 has a built in preamp. But that's only for the whip right?
Still, you can clip a longwire to the antenna.

This idea ist not that good for me. I like to feed the preamp with a
sinal from the attic 6th floor (my appartment is on base floor) and not
with computer noise :-) There are some unused chimneys I run some
coax-feedlines through. Unfortunately I'm forbidden to go on top of the
roof :-((

Volker Tonn wrote:

Lucky schrieb:


You can run it active with a 9 volt battery too.
But, the 150 has a built in preamp. But that's only for the whip right?
Still, you can clip a longwire to the antenna.

This idea ist not that good for me. I like to feed the preamp with a
sinal from the attic 6th floor (my appartment is on base floor) and not
with computer noise :-) There are some unused chimneys I run some
coax-feedlines through. Unfortunately I'm forbidden to go on top of the
roof :-((

Do you find that you need a pre-selector where you are at due to high signal
levels from various sources or is there another reason why you need one.

I've never found a reason here to use an 'outboard' pre-selector.

dxAce
Michigan
USA

dxAce schrieb:

Do you find that you need a pre-selector where you are at due to high signal
levels from various sources or is there another reason why you need one.

I've never found a reason here to use an 'outboard' pre-selector.


For sure I don't need this on the NRD-525 as you dont need one on the
Drake-R8B... :-)
But as I had the things available I gave it a try on the NRD too :-)
On the Sony the external antenna with the FRA/FRT combo works wonders.
You can use them together to passbandtune for much more seletivity than
the Yaesu FRT-7700 preselector alone is giving. For sure you have to
fiddle on the knobs a lot. This may be another thing with other brands.

Volker Tonn wrote:

dxAce schrieb:

Do you find that you need a pre-selector where you are at due to high signal
levels from various sources or is there another reason why you need one.

I've never found a reason here to use an 'outboard' pre-selector.


For sure I don't need this on the NRD-525 as you dont need one on the
Drake-R8B... :-)
But as I had the things available I gave it a try on the NRD too :-)
On the Sony the external antenna with the FRA/FRT combo works wonders.
You can use them together to passbandtune for much more seletivity than
the Yaesu FRT-7700 preselector alone is giving. For sure you have to
fiddle on the knobs a lot. This may be another thing with other brands.

Well, years ago, when I got back into the shortwave hobby (circa 1982 or so) I did
eventually purchase a FRT-7700 for use with the FRG-7700 which I had at the time.

Lucky wrote:

"Volker Tonn" wrote in message
...
Lucky schrieb:

I have the FRA-7700


I have it too :-)
I have nodified it to feed an external antenna with BNC connector. So it
makes a fine selective HF preamp. I've this thing cascaded with the
FRT-7700.
It works fine with my Sony but it doesn't make anything better on my
NRD-525.


You can run it active with a 9 volt battery too.
But, the 150 has a built in preamp. But that's only for the whip right?
Still, you can clip a longwire to the antenna.

Lucky

I'm pretty sure it's set up like the 7030. The whip connects to the regular
antenna jack. You can use the preamp with any antenna, but if it's a large one,
you should expect overloading.

"Mark S. Holden" wrote in message
...
Lucky wrote:

"Volker Tonn" wrote in message
...
Lucky schrieb:

I have the FRA-7700


I have it too :-)
I have nodified it to feed an external antenna with BNC connector. So
it
makes a fine selective HF preamp. I've this thing cascaded with the
FRT-7700.
It works fine with my Sony but it doesn't make anything better on my
NRD-525.


You can run it active with a 9 volt battery too.
But, the 150 has a built in preamp. But that's only for the whip right?
Still, you can clip a longwire to the antenna.

Lucky

I'm pretty sure it's set up like the 7030. The whip connects to the
regular
antenna jack. You can use the preamp with any antenna, but if it's a
large one,
you should expect overloading.

Ok that's better. I'm spoiled by the preamps on the R-75.

Lucky