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Call Sign : 26-CT-989 Posts : 22 Times Thanked : 0 Join date : 2020-01-13 QTH or Location : Clacton on sea essex Equipment Used : CRT ss9900 with solarcon aerial Age : 54
Subject: Interference from sideband?? Wed Jan 15, 2020 3:49 am
Hi all,quick question....last time I transmitted (15 years ago) I used to wipe out the whole of my estateI used to use a president lincoln or my cobra 148 with b300p amplifier and an Antron 99 on 11 metres sideband.......I am now setting up again and wondered if I will still get the same problems as before?? Also I am literally 600yds from a private airport will it interfere with them?? Only looking to transmit approx 100 watts on ssb ?? Thanks for any advice/replies
GaryWilson CT Directors
Call Sign : 26-CT-1836 Ham 2E0GGQ Posts : 3688 Times Thanked : 302 Join date : 2019-06-27 QTH or Location : Braunston Northamptonshire. Equipment Used : Radios & Wires & Stuff! Age : 58
Subject: Re: Interference from sideband?? Wed Jan 15, 2020 6:14 am
Hello Andy,
You're much more likely to suffer the interference in reverse these days. Most of us suffer QRM from all the electrical devices in peoples homes now.
I think it's unlikely you'll cause problems to the airport communications system they will be UHF digital now I expect, It's hard to be certain though.
73's Gary.
Andybron New Member
Call Sign : 26-CT-989 Posts : 22 Times Thanked : 0 Join date : 2020-01-13 QTH or Location : Clacton on sea essex Equipment Used : CRT ss9900 with solarcon aerial Age : 54
Subject: Re: Interference from sideband?? Wed Jan 15, 2020 6:38 am
[quote="GaryWilson"]Hello Andy,
You're much more likely to suffer the interference in reverse these days. Most of us suffer QRM from all the electrical devices in peoples homes now.
I think it's unlikely you'll cause problems to the airport communications system they will be UHF digital now I expect, It's hard to be certain though.
73's Gary.[/quote Thanks for your reply,well I as soon as these winds die down I will try and worst case will have to go mobile
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NUBSTER 10 + Year member
Call Sign : 26 CT050 26 FB080 26 WT105 26 TE171 Posts : 948 Times Thanked : 51 Join date : 2019-06-27 QTH or Location : NORTH LONDON Equipment Used : ORIGINAL President Lincoln, President Teddy , Silver Eagle microphones , Gainmaster antenna, use a AMP ofcourse I do sometimes Age : 64
Subject: Re: Interference from sideband?? Wed Jan 15, 2020 8:37 am
Its true what Gary said ,but even though SSB and AM modes are legal to use now, but it's still illegal to use any extra power ie: amplifiers on 11m so be careful,
Northern Crusader Major contributor
Call Sign : M0GVZ / 26CT1760 Posts : 488 Times Thanked : 32 Join date : 2019-11-13 QTH or Location : IO94SA Equipment Used : Icom 7300, TS480, President McKinley, Albrecht AE6110, CRT Mike Age : 52
Subject: Re: Interference from sideband?? Wed Jan 15, 2020 11:47 am
Overdriving your amp will cause splatter. Having the mic gain too high will cause splatter. Also if you've not got a decent RF ground for your antenna your coax will be radiating too and cause RFI - that can be easily solved by putting in a RF choke near the antenna.
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Subject: Interference from sideband?? 
