Topics

9 cms antennas

Richard <richard@...>
 

Hi I was asked at the GMRT if YU1CF produced anything for 9cms
here's his answer:-

Hi Richard

Thank you fore asking.

Although we did not produce Yagis for that band. I am sure it is
possible.
But it will take to much time at the moment.
Maybe in some winter time about January or February.

Goran YU1CF
https://www.antennas-amplifiers.com

The last time I asked was on 13 cms antennas , and I had the first of
the yagis for 2300 - 2350 MHz.

When I hear more I'll post to the list
--
Best wishes /73
Richard Bown

Email : richard@...

HTTP : http://www.g8jvm.com

######################################################################

Ham Call: G8JVM . QRV: 50-432 MHz + Microwave
Maidenhead QRA: IO82SP38, LAT. 52 39.720' N LONG. 2 28.171 W
QRV 6mtrs 200W, 4mtrs 150W, 2mtrs 300W, 70cms 200W,
Microwave 1296MHz 140W, 2320MHz 100W & 10368MHz 5W
OS: Linux Mint 19 x86_64 Tara, on a Dell Inspiron N5030 laptop
######################################################################

Eddie G0EHV
 

Richard, it was me you were chatting to!
Thanks for interest and chasing up.
Regards,
Eddie

Launched into the ether from my iPad

On 16 Nov 2018, at 22:09, Richard <richard@...> wrote:

Hi I was asked at the GMRT if YU1CF produced anything for 9cms
here's his answer:-

Hi Richard

Thank you fore asking.

Although we did not produce Yagis for that band. I am sure it is
possible.
But it will take to much time at the moment.
Maybe in some winter time about January or February.

Goran YU1CF
https://www.antennas-amplifiers.com

The last time I asked was on 13 cms antennas , and I had the first of
the yagis for 2300 - 2350 MHz.

When I hear more I'll post to the list
--
Best wishes /73
Richard Bown

Email : richard@...

HTTP : http://www.g8jvm.com

######################################################################

Ham Call: G8JVM . QRV: 50-432 MHz + Microwave
Maidenhead QRA: IO82SP38, LAT. 52 39.720' N LONG. 2 28.171 W
QRV 6mtrs 200W, 4mtrs 150W, 2mtrs 300W, 70cms 200W,
Microwave 1296MHz 140W, 2320MHz 100W & 10368MHz 5W
OS: Linux Mint 19 x86_64 Tara, on a Dell Inspiron N5030 laptop
######################################################################




Conrad, PA5Y
 

Eddie but you are unforgettable!

73

Conrad PA5Y

-----Original Message-----
From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> On Behalf Of Eddie G0EHV via Groups.Io
Sent: 16 November 2018 23:44
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] 9 cms antennas

Richard, it was me you were chatting to!
Thanks for interest and chasing up.
Regards,
Eddie

Launched into the ether from my iPad

On 16 Nov 2018, at 22:09, Richard <richard@...> wrote:

Hi I was asked at the GMRT if YU1CF produced anything for 9cms here's
his answer:-

Hi Richard

Thank you fore asking.

Although we did not produce Yagis for that band. I am sure it is
possible.
But it will take to much time at the moment.
Maybe in some winter time about January or February.

Goran YU1CF
https://www.antennas-amplifiers.com

The last time I asked was on 13 cms antennas , and I had the first of
the yagis for 2300 - 2350 MHz.

When I hear more I'll post to the list
--
Best wishes /73
Richard Bown

Email : richard@...

HTTP : http://www.g8jvm.com

######################################################################

Ham Call: G8JVM . QRV: 50-432 MHz + Microwave Maidenhead QRA:
IO82SP38, LAT. 52 39.720' N LONG. 2 28.171 W QRV 6mtrs 200W, 4mtrs
150W, 2mtrs 300W, 70cms 200W, Microwave 1296MHz 140W, 2320MHz 100W &
10368MHz 5W
OS: Linux Mint 19 x86_64 Tara, on a Dell Inspiron N5030 laptop
######################################################################




Ferdinand DC8EC
 

Hello Richard,
 
i built a 9cm Yagi at the kitchen table over 30 years ago. If you are interested, I can send you the drawing and a picture. Gain 15.2 dBd,
measured in the aerospace antenna laboratory at MBB Ottobrunn, my former qrl , together with Ulf DK2RV.
(I do not produce this yagi !! , hi)

73 de Ferdinand DC8EC

Stuart G1ZAR
 

Hello Ferdinand,
Was this built toany of the popular designs?
What matching method did you use?
perhaps you could share this in the Files - Antennas folder?

regards, Stuart

militaryoperator
 

On Sun, Nov 18, 2018 at 11:30 AM, Ferdinand DC8EC wrote:
i built a 9cm Yagi at the kitchen table over 30 years ago. If you are interested, I can send you the drawing and a picture. Gain 15.2 dBd,
measured in the aerospace antenna laboratory at MBB Ottobrunn, my former qrl , together with Ulf DK2RV.
(I do not produce this yagi !! , hi)
73 de Ferdinand DC8EC
Ferdinand. Could you send me your drawings for 9Cm yagi please?  Thanks, Ben G4BXD

Dave Brown
 

I’m interested as well, Ferdinand. Would appreciate a copy of the drawing.

73

Dave, ZL3FJ

 

 

From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of militaryoperator via Groups.Io
Sent: Sunday, December 08, 2019 11:42
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] 9 cms antennas

 

On Sun, Nov 18, 2018 at 11:30 AM, Ferdinand DC8EC wrote:

i built a 9cm Yagi at the kitchen table over 30 years ago. If you are interested, I can send you the drawing and a picture. Gain 15.2 dBd,

measured in the aerospace antenna laboratory at MBB Ottobrunn, my former qrl , together with Ulf DK2RV.
(I do not produce this yagi !! , hi)
73 de Ferdinand DC8EC

Ferdinand. Could you send me your drawings for 9Cm yagi please?  Thanks, Ben G4BXD

Lou Blasco
 

Hi All,

Our group has a files section. It would benefit many if the drawings were made available there.

Regards

Lou
VK3ALB


At 11:38 08/12/2019, you wrote:
I’m interested as well, Ferdinand. Would appreciate a copy of the drawing.
73
Dave, ZL3FJ
 
 
From: UKMicrowaves@groups.io [ mailto:UKMicrowaves@groups.io] On Behalf Of militaryoperator via Groups.Io
Sent: Sunday, December 08, 2019 11:42
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] 9 cms antennas
 
On Sun, Nov 18, 2018 at 11:30 AM, Ferdinand DC8EC wrote:
i built a 9cm Yagi at the kitchen table over 30 years ago. If you are interested, I can send you the drawing and a picture. Gain 15.2 dBd,
measured in the aerospace antenna laboratory at MBB Ottobrunn, my former qrl , together with Ulf DK2RV.
(I do not produce this yagi !! , hi)
73 de Ferdinand DC8EC
Ferdinand. Could you send me your drawings for 9Cm yagi please?  Thanks, Ben G4BXD

Alan Beard
 

Hi,

Here is a a modest size horn design. I made one for the 1.3 to 2.4 GHz band from some
flashing ally sheet and the feed strip was the shield cover from a dead laptop charger, copper
so I could solder it to the N socket and two screws at the end onto the waveguide broad face.

We have a Microwave Simulation expert checking this design and possibly telling us exactly
what to adjust to get a good Return Loss at both 1.3 and 2.4 GHz. On 1296 MHz it worked
first time. I'm skeptical  of my test gear (PocketVNA)  at 2.4 G so I left well alone.

As mentioned in the article, it's scale-able to higher bands.

When we have simulation results, we'll add in the "Files" section.

Perhaps a "yagi" section could be put in front of this but I'd just extend the horn in mesh.

A mesh size of one tenth of the wavelength is plenty good enough. one inch for 23cm, half inch
would work for 9cm.

Nothing is critical here, best angle, every unit of length forward, half up and half down in the vertical and the horizontal.

Alan VK2ZIW

On Sun, 08 Dec 2019 13:04:22 +1100, Lou Blasco wrote
> Hi All,
>
> Our group has a files section. It would benefit many if the drawings were made available there.
>
> Regards
>
> Lou
> VK3ALB
>
> At 11:38 08/12/2019, you wrote:
>

Reply To Group | Reply To Sender | Mute This Topic | New Topic
>
> Your Subscription | Contact Group Owner | Unsubscribe [beardal@...]
>
> _._,_._,_


---------------------------------------------------
Alan Beard

OpenWebMail 2.53

Stanislaw Ziemczonek
 

 Alan ,
many years ago I took measurements of this horn, which works well on 3 bands.
The results are on:
http://www.sp6gwb.pl/wp-content/uploads/2010/04/pomiary.pdf
I used several copies of this horn in my 2'nd  QTH JO80JG with a 1.4 and 1.25 m dish.
73's de Staszek SP6GWB

Hi,

Here is a a modest size horn design. I made one for the 1.3 to 2.4 GHz band from some
flashing ally sheet and the feed strip was the shield cover from a dead laptop charger, copper
so I could solder it to the N socket and two screws at the end onto the waveguide broad face.

We have a Microwave Simulation expert checking this design and possibly telling us exactly
what to adjust to get a good Return Loss at both 1.3 and 2.4 GHz. On 1296 MHz it worked
first time. I'm skeptical  of my test gear (PocketVNA)  at 2.4 G so I left well alone.

As mentioned in the article, it's scale-able to higher bands.

When we have simulation results, we'll add in the "Files" section.

Perhaps a "yagi" section could be put in front of this but I'd just extend the horn in mesh.

A mesh size of one tenth of the wavelength is plenty good enough. one inch for 23cm, half inch
would work for 9cm.

Nothing is critical here, best angle, every unit of length forward, half up and half down in the vertical and the horizontal.

Alan VK2ZIW

On Sun, 08 Dec 2019 13:04:22 +1100, Lou Blasco wrote
> Hi All,
>
> Our group has a files section. It would benefit many if the drawings were made available there.
>
> Regards
>
> Lou
> VK3ALB
>
> At 11:38 08/12/2019, you wrote:
>
Reply To Group | Reply To Sender | Mute This Topic | New Topic
>
> Your Subscription | Contact Group Owner | Unsubscribe [beardal@...]
>