tag:blogger.com,1999:blog-35901825.post3113381979823963166..comments2024-03-19T06:03:40.451+10:00Comments on marxy's musing on technology: GP4 HF vertical antenna reviewPeter Markshttp://www.blogger.com/profile/13007012724570360389noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-35901825.post-89712340243860185552023-04-06T14:51:18.224+10:002023-04-06T14:51:18.224+10:00Héctor wrote: "Well, I put 6 lines of 2.5m an...Héctor wrote: "Well, I put 6 lines of 2.5m and 2 of 5m, and in 7,060Mhz above 3 SWR, I can't lengthen the antenna any longer, any recommendations?"<br /><br />I don't know, my SWR minimums were pretty low as you can see from the plot in the post. Do you have metal near by? Perhaps raising the antenna would help.Peter Markshttps://www.blogger.com/profile/13007012724570360389noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-51305518920027600522023-04-06T12:42:44.862+10:002023-04-06T12:42:44.862+10:00Pues yo puse 6 líneas de 2.5m y 2 de 5m, y en 7.06...Pues yo puse 6 líneas de 2.5m y 2 de 5m, y en 7.060Mhz arriba de 3 SWR, la antena ya no puedo alargarla más, alguna recomendación?Héctor Daniel Huerta Ramírezhttps://www.blogger.com/profile/09956743919025372128noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-15049018573993586722022-12-15T21:02:33.606+10:002022-12-15T21:02:33.606+10:00Hi Peter, I have mounted the GP4 antenna close to ...Hi Peter, I have mounted the GP4 antenna close to the ground, about a 100mm and run 6 radials.<br />I find the noise level at about 9 on 20 meters, don't know its the antenna or just the conditions at the moment.<br />I was actually hoping to use it on 20 meters for DXing, but no luck so far.Anonymoushttps://www.blogger.com/profile/09173275544914878615noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-2021609956786473852022-11-21T06:33:27.148+10:002022-11-21T06:33:27.148+10:00Hi Unknown,
Yes it looks like the antenna you hav...Hi Unknown,<br /><br />Yes it looks like the antenna you have is two of the verticals I have. It's a few years since I installed it and there was enough documentation for it to go together without too much head scratching. I suggest you write to the seller and they should send you something.Peter Markshttps://www.blogger.com/profile/13007012724570360389noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-46728256276200707932022-11-20T18:39:41.918+10:002022-11-20T18:39:41.918+10:00Hi Peter, the 750V Shortwave antenna was delivered...Hi Peter, the 750V Shortwave antenna was delivered 2 days ago. I also purchased on Aliexpress. Apparently its like two GP4 antennas, At the moment I'm finding it difficult to mount it at 6 meters height, I only have a small garden! So what I am going to do is use one half as a vertical. Could you please confirm what traps are used on the GP4 as there seems to be no instruction manual for any Anonymoushttps://www.blogger.com/profile/09173275544914878615noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-41037195153852360772022-03-16T01:23:37.010+10:002022-03-16T01:23:37.010+10:00Viene montata a circa 50cm così dice il venditore....Viene montata a circa 50cm così dice il venditore....queste antenne non vanno montate alte.totòhttps://www.blogger.com/profile/02981771200778454760noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-15393020526232329872021-02-05T06:28:33.387+10:002021-02-05T06:28:33.387+10:00I'm using 6 x 2.5m wires and 2 5m wires roughl...I'm using 6 x 2.5m wires and 2 5m wires roughly spread along the fence so not great. I guess it makes it a bit directional but tunes up well on 40 and 20.Peter Markshttps://www.blogger.com/profile/13007012724570360389noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-91157414986333300142021-02-05T05:35:50.458+10:002021-02-05T05:35:50.458+10:00Can you comment on what grounding / earth system y...Can you comment on what grounding / earth system you used.Anonymoushttps://www.blogger.com/profile/06234979836763293784noreply@blogger.com