Topband: Sloper lobes
My 160 sloper came down thanks to the high winds we had over the last few days (it'll make a nice radial now) & I have a new WD-1A wire ready to put back up. Not that I have much choice which direction to put it back up, but I have a couple options. For discussion's sake, with my bottom fed sloper and the antenna sloping to the East, I've always assumed the main lobe would likely be to the East as well, is that right? Thanks, Gary KA1J _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: 4 Square Receiving at 3V8SF
Thanks Clive! I did a F/B test towards the TX ant and the F/B is indeed 5 db less. I may need to think of that solution. 73 Ash 3V8SF -- Original Message -- From: "Clive GM3POI" To: "Ashraf Chaabane" Sent: 02/03/2019 12:32:02 Subject: RE: Re[2]: Topband: 4 Square Receiving at 3V8SF Ash, model it when the RX antenna is pointing at the TX antenna. There is a good chance it will affect the pattern, but lifting the base of the TX antenna above ground with a relay when on RX will cure that. 73 Clive GM3POI -Original Message- From: Ashraf Chaabane [mailto:ash.kf5...@gmail.com] Sent: 02 March 2019 10:57 To: Clive GM3POI; topband@contesting.com Subject: Re[2]: Topband: 4 Square Receiving at 3V8SF Clive, The vertical is 130m away from the array center. I'm presuming this is a good distance to avoid interaction. 73 Ash 3V8SF -- Original Message -- From: "Clive GM3POI" To: "Ashraf Chaabane" ; topband@contesting.com Sent: 02/03/2019 11:54:48 Subject: RE: Topband: 4 Square Receiving at 3V8SF Ash model in also your TX antenna and see whether you need to isolate that vertical on RX with a relay. 73 Clive GM3POI -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Ashraf Chaabane Sent: 02 March 2019 10:46 To: topband@contesting.com Subject: Topband: 4 Square Receiving at 3V8SF Hi guys, I built a 4 Square Receiving Array for 160m at 3V8SF. I put details in my website: http://kf5eyy.info/topband.htm The achieved F/B so far is 20 db and the F/S is 19 db. There is still room for improvement with better matching of the elements. I'll need time to do that. Thanks to Ahmad 3V1B and Majdi 3V1M for helping me setting up of the elements. Also to K7TJR, W3LPL and W0FLS for the valuable support. 73 Ash 3V8SF, 3V8SS www.kf5eyy.info _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: VKs This Morning
I was pleasantly surprised when I got to the radio this morning to see VK5CZ show up on RBN. I tuned onto his freq was able to hear him but very weak (339) and called him. I believe he responded but had faded. After a couple of exchanges we got in sync with each other for a good QSO. VK5CZ was a first time call sign. I then installed the 1821.5 xtal and called CQ for a while. Steve/VK7CW soon called in (559). Then a few minutes later Adrian/VK2WF called in (569). So today was all things VK. 73. . . Dave, W0FLS -Original Message- From: Mark K3MSB Sent: Saturday, March 02, 2019 6:37 AM To: topBand List Subject: Topband: VKs This Morning I sent this to the members of our local radio club as I'm trying to get them to understand the importance of SR and SS on 80 and 160M; I thought some of you may enjoy it. March is here and conditions should be improving for NA to VK/ZL contacts I hope this morning is a good sign.. 73 Mark K3MSB _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: 4 Square Receiving at 3V8SF
> The vertical is 130m away from the array center. Ash, at less than 1 wavelength the TX antenna is still within the near field and can most certainly impact the receiving array. The real questions are how much does it impact the shortened verticals (pattern impact) and how much noise does it radiate because it is resonant. 73, ... Joe, W4TV On 2019-03-02 5:56 AM, Ashraf Chaabane wrote: Clive, The vertical is 130m away from the array center. I'm presuming this is a good distance to avoid interaction. 73 Ash 3V8SF -- Original Message -- From: "Clive GM3POI" To: "Ashraf Chaabane" ; topband@contesting.com Sent: 02/03/2019 11:54:48 Subject: RE: Topband: 4 Square Receiving at 3V8SF Ash model in also your TX antenna and see whether you need to isolate that vertical on RX with a relay. 73 Clive GM3POI -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Ashraf Chaabane Sent: 02 March 2019 10:46 To: topband@contesting.com Subject: Topband: 4 Square Receiving at 3V8SF Hi guys, I built a 4 Square Receiving Array for 160m at 3V8SF. I put details in my website: http://kf5eyy.info/topband.htm The achieved F/B so far is 20 db and the F/S is 19 db. There is still room for improvement with better matching of the elements. I'll need time to do that. Thanks to Ahmad 3V1B and Majdi 3V1M for helping me setting up of the elements. Also to K7TJR, W3LPL and W0FLS for the valuable support. 73 Ash 3V8SF, 3V8SS www.kf5eyy.info _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Topband: VKs This Morning
I sent this to the members of our local radio club as I'm trying to get them to understand the importance of SR and SS on 80 and 160M; I thought some of you may enjoy it. March is here and conditions should be improving for NA to VK/ZL contacts I hope this morning is a good sign.. 73 Mark K3MSB -- Forwarded message - From: Mark K3MSB Date: Sat, Mar 2, 2019 at 7:28 AM Subject: VKs This Morning Hello Everyone I could not sleep this morning and got up at 2:30 AM. I went down to the shack and not much was cooking on 160 or 80, so I did some research for some technical material I needed for a Navy RBB restoration that I'm working on. I wandered over to the SKCC chat room around 1030Z (5:30 AM). Steve VK7CW was on and both N1FG and I tried to work him on 160M.He gave us both 559 but neither of us could hear him well enough for a full SKCC exchange( RST, State, Name, and SKCC number). My SR was around 1137Z and Steve said he would be around until then. In the meantime, VK7CW and I worked on 40M (RST 559) at 1048Z then on 80M (RST 469) at 1100Z. We again tried 160M but were only able to exchange RSTs at 1116Z. Steve's signal had improved but not for a full SKCC exchange. VK7CW and I tried again at 1126Z and Steve's signal had now improved enough for an SKCC exchange, but it took two tries, his RST now being 449. At 1139Z (my SR +2 min) I saw VK3CWB spotted on 1828 so went up there and bang! The guy almost knocked me over – an honest 589! I couldn't believe it!I sent my call and bagged him right off! By 1149Z (my SR + 12 min) VK3CWB was down to about 449-549 and not moving the needle. A good morning! A pair of VKs on 160M and I worked one of them with a J-38 straight key! Time for some coffee. 73 Mark K3MSB _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: 4 Square Receiving at 3V8SF
Ash model in also your TX antenna and see whether you need to isolate that vertical on RX with a relay. 73 Clive GM3POI -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Ashraf Chaabane Sent: 02 March 2019 10:46 To: topband@contesting.com Subject: Topband: 4 Square Receiving at 3V8SF Hi guys, I built a 4 Square Receiving Array for 160m at 3V8SF. I put details in my website: http://kf5eyy.info/topband.htm The achieved F/B so far is 20 db and the F/S is 19 db. There is still room for improvement with better matching of the elements. I'll need time to do that. Thanks to Ahmad 3V1B and Majdi 3V1M for helping me setting up of the elements. Also to K7TJR, W3LPL and W0FLS for the valuable support. 73 Ash 3V8SF, 3V8SS www.kf5eyy.info _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: 4 Square Receiving at 3V8SF
Clive, The vertical is 130m away from the array center. I'm presuming this is a good distance to avoid interaction. 73 Ash 3V8SF -- Original Message -- From: "Clive GM3POI" To: "Ashraf Chaabane" ; topband@contesting.com Sent: 02/03/2019 11:54:48 Subject: RE: Topband: 4 Square Receiving at 3V8SF Ash model in also your TX antenna and see whether you need to isolate that vertical on RX with a relay. 73 Clive GM3POI -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Ashraf Chaabane Sent: 02 March 2019 10:46 To: topband@contesting.com Subject: Topband: 4 Square Receiving at 3V8SF Hi guys, I built a 4 Square Receiving Array for 160m at 3V8SF. I put details in my website: http://kf5eyy.info/topband.htm The achieved F/B so far is 20 db and the F/S is 19 db. There is still room for improvement with better matching of the elements. I'll need time to do that. Thanks to Ahmad 3V1B and Majdi 3V1M for helping me setting up of the elements. Also to K7TJR, W3LPL and W0FLS for the valuable support. 73 Ash 3V8SF, 3V8SS www.kf5eyy.info _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Topband: 4 Square Receiving at 3V8SF
Hi guys, I built a 4 Square Receiving Array for 160m at 3V8SF. I put details in my website: http://kf5eyy.info/topband.htm The achieved F/B so far is 20 db and the F/S is 19 db. There is still room for improvement with better matching of the elements. I'll need time to do that. Thanks to Ahmad 3V1B and Majdi 3V1M for helping me setting up of the elements. Also to K7TJR, W3LPL and W0FLS for the valuable support. 73 Ash 3V8SF, 3V8SS www.kf5eyy.info _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
