Hi Dimitry,
I know of this filter, but these are for working FO-29 when the uplink is 145 and the downlink 435.
The Harmonics produced by the 145 uplink signal interfere with the 435 downlink. Now I experience the same with VO-52 but there the uplink 435 and the donwlink 145 ???
So why is the 435 uplink interfering with the 145 downlink ????
Could this be a harmonic problem???
73 Jan PE0SAT
On 21-11-2012 17:06, Dimitry Borzenko wrote:
Hello Jan.
Try "Desense" filter. More info here - http://www.amsat.org/amsat-new/articles/Mode-J/
Regards.
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of PE0SAT | Amateur Radio Sent: Tuesday, November 20, 2012 8:12 PM To: Amsat bb Subject: [amsat-bb] Who is using a IC-910 with Maspro Antennas?
Hi,
Thanks for reading this message. I have exchanged my FT-847 for an IC-910H and now when I try to work VO-52 my UHF uplink signal interferes with the VHF downlink. Are the any people out there that experience the same with this combination?
I tried with and without pre-amp, RHCP and LHCP but the problems doesn't go away :(
I do know that there can be problems when working FO-29 and a mode-j filter can solve this, but I never experiences this when working VO-52.
73 Jan PE0SAT