all is mounted into a small painting box.
Different bands have multiple stubs to null to different bands.
It is placed about 10-15 ft from the rigs, but I dont have cable between the
stubs as I have soldered it directly on relays for each band.
I have read people have had it about 1/2 wavelength from station, I donno if 7
mhz will have 20m of coax from the rig to filter to have it optimal effect?
I have perfect SWR and the attunation is ok about 20-30 db on the excatly
harmonic QRG from 7.000 to 3,500 20db's
QRG from 7.100 to 14.200 25 db's
I can still hear some white noise..if I fire up to 1kw from the amp... but it
is still there on 100 watts on both trxs.
2nd option can be the bad RX in the TS2000, but I have tried both the TS930 and
TS850 with inrad filters and roofing filters installed.
Maybe I need some 7mhz lowpass filters ????
I ordered some ICE 419, but they stopped making this upon my order.
This was the cheapest option, but it crazy to pay 600 $ those expensive packs
for each station, I wanna have this filters to work, but I cannot measure any
thing with scope...
Maybe it is better with monoband yagies ???
I was thinking the multiband antenna maybe generate bad harmonics too ?????
> From: jimlux [email@example.com]
> Sent: 2010-03-29 14:20:15 MEST
> To: Tower and HF antenna construction topics. [firstname.lastname@example.org]
> Subject: Re: [TowerTalk] coax stubs /bandpass filter
> Stein Roar LA6FJA-K3RAG wrote:
> > Hi
> > I have made a set of coaxstubs for bandpass filter, but it is not enough
> > attunation..
> > Is it normal with 20-30 db attunation ??
> how long was the coax from rig to stub?
> Do you have multiple stubs? and if so, how far apart are they?
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