Roofing filters - on the other end

[Val-12]

While the discussion on the roofing filters was flowing here, there was a
huge talk over BS7H expedition on the cluster and DX reflectors, and a lot
of dissatisfaction and criticism. The operators were blamed for the slow
traffic and the RX bandwidth, sometimes taking a good part of the band. The
skill of the members was put in a doubt until UR0MC, a member of N8S
expedition explained:
"My opinion is that a wide split is not through operators fault. I don't
know what kind of transceivers they used on BS7H, most probably the same as
we used on N8S - PROIII. Please imagine how in the 15 KHz first filter input
clutters up thousands stations with level 599+20db. All that nuisance going
to DSP. Finally you can hear in the phones some modulated 'hunk'. And you
can get some signal only at the end of this 'hunk'. After 2-3 QSO on this
frequency grows a new 'hunk'  and so on, and so on....
With K2 with 200 Hz filter pileups were processed much easier. The stations
stood as pins, you have only to turn the knob and pick them up.
The conclusion is: The expedition equipments sponsors must be changed :-) "

Translated by
Val LZ1VB
K2 2745, K3 ?


_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[johnny-52]

Hi Val,

Purely from your description, operators' skills could be another factor.

73

Johnny Siu VR2XMC

----- Original Message -----
From: "Val" <[hidden email]>
To: <[hidden email]>
Sent: Wednesday, May 09, 2007 9:37 PM
Subject: [Elecraft] Roofing filters - on the other end

> While the discussion on the roofing filters was flowing here, there was a
> huge talk over BS7H expedition on the cluster and DX reflectors, and a lot
> of dissatisfaction and criticism. The operators were blamed for the slow
> traffic and the RX bandwidth, sometimes taking a good part of the band.
> The
> skill of the members was put in a doubt until UR0MC, a member of N8S
> expedition explained:
> "My opinion is that a wide split is not through operators fault. I don't
> know what kind of transceivers they used on BS7H, most probably the same
> as
> we used on N8S - PROIII. Please imagine how in the 15 KHz first filter
> input
> clutters up thousands stations with level 599+20db. All that nuisance
> going
> to DSP. Finally you can hear in the phones some modulated 'hunk'. And you
> can get some signal only at the end of this 'hunk'. After 2-3 QSO on this
> frequency grows a new 'hunk'  and so on, and so on....
> With K2 with 200 Hz filter pileups were processed much easier. The
> stations
> stood as pins, you have only to turn the knob and pick them up.
> The conclusion is: The expedition equipments sponsors must be changed :-)
> "
>
> Translated by
> Val LZ1VB
> K2 2745, K3 ?
>

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Brendan Minish]

Surely the best way to deal with this is to use the attenuator to
improve the strong signal IMD performance, this applies to all radios,
Analog and DSP based

The BS7H CW Pileups were just dreadful.

73
Brendan EI6IZ  


On Wed, 2007-05-09 at 16:37 +0300, Val wrote:

> While the discussion on the roofing filters was flowing here, there was a
> huge talk over BS7H expedition on the cluster and DX reflectors, and a lot
> of dissatisfaction and criticism. The operators were blamed for the slow
> traffic and the RX bandwidth, sometimes taking a good part of the band. The
> skill of the members was put in a doubt until UR0MC, a member of N8S
> expedition explained:
> "My opinion is that a wide split is not through operators fault. I don't
> know what kind of transceivers they used on BS7H, most probably the same as
> we used on N8S - PROIII. Please imagine how in the 15 KHz first filter input
> clutters up thousands stations with level 599+20db. All that nuisance going
> to DSP. Finally you can hear in the phones some modulated 'hunk'. And you
> can get some signal only at the end of this 'hunk'. After 2-3 QSO on this
> frequency grows a new 'hunk'  and so on, and so on....
> With K2 with 200 Hz filter pileups were processed much easier. The stations
> stood as pins, you have only to turn the knob and pick them up.
> The conclusion is: The expedition equipments sponsors must be changed :-) "
>
> Translated by
> Val LZ1VB
> K2 2745, K3 ?
>
>
> _______________________________________________

> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
>  http://mailman.qth.net/mailman/listinfo/elecraft   
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com