Re: Ensamble RX II problems...
- Hi and thx for the answer.
I made a look at my antenna and .. looked up the connectors and such stuff as it beginned after i looked up my antenna eirlier today.
And now it's seems to work perfect as before again.. and i also seems to get a better sensivity as well.
Donty know what i have done .. but i hear things better.. :)
--- In firstname.lastname@example.org, EB4APL <eb4apl@...> wrote:
> I have the same problem with 3 different Ensemble Rx's, it is a kind of
> signal overload. In my case I live near a broadcast 500 Kw MW antenna
> (and several more in the 10's of Kw range) and I see and hear its
> modulation, it appears to be like DSB centered around the central
> frequency and if I use any SSB mode I hear it clearly. Inserting an
> attenuator between the antenna and the Rx, sometimes as low as 2 dB
> solves the problem. The reason to affect only the upper bands is
> because in the two lower bands there are internal 14 dB attenuators
> permanently inserted before the filters. I tried a 2 MHz HP filter at
> the input and it worked and finally I soldered internally a small
> inductor directly across the antenna connector and the problem is gone.
> But if your overloading station is not in the MW band you can try
> another solution, like a switchable attenuator, because in some rare
> occasions I found that a powerful transmitter from China Radio Intl. was
> producing the same effect and it cannot be filtered in an easy way.
> 73 de Ignacio, EB4APL
> On 03/12/2011 14:09, Mattias wrote:
> > Hi all...
> > I begin to have an annoying problem with my Ensamble RX II...
> > On higher frequencies .. above 14Mhz i get some strange "peaks" on the
> > centerfrequence... like modulation or noice peaks...
> > It disapeare if i pull out the USB cable but came vack whan it's
> > attached...
> > if i put my fingers on components arount the connector for the cable
> > to my soundcard i can get the same fenomen..
> > I have ... looked over all the solderpoints and whey seems okay .. but
> > the problem still remains..
> > The kit works wery well otherwise but this problem .. are showing up..