: [amsat-bb] Re: Arrow antenna reconfiguration results - UPDATE
We are missing the easy answer. He had diplexer that was off spec. It
happens.
73,
Joe kk0sd
-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Jeff Yanko
Sent
, October 01, 2009 6:27 PM
Subject: Re: [amsat-bb] Re: Arrow antenna reconfiguration results - UPDATE
Jeff,
The test was conducted with an anritsu two port network analyzer. Model
number can be obtained if required. Each curve was made feeding the
common port on the BNC cable as shipped
if it
is possible to extend the timer by 1 or 1.5 minutes, if the bird can spare
it.
73,
Jeff WB3JFS
- Original Message -
From: Alan VE4YZ ve...@mts.net
To: 'AMSAT-BB' amsat-bb@amsat.org
Sent: Friday, September 25, 2009 8:44 PM
Subject: [amsat-bb] Re: Arrow antenna reconfiguration
; Gary Joe Mayfield
Subject: [amsat-bb] Re: Arrow antenna reconfiguration results - UPDATE
Hi Charles and the group,
FB on the numbers. Interesting to say the least and thanks for taking the
time to look further into this topic.
Questions? I have a few after looking at these numbers
-
From: Charles Suprin
To: Jeff Yanko
Cc: Joe ; Gary Joe Mayfield ; AMSAT-BB
Sent: Thursday, October 01, 2009 1:09 PM
Subject: Re: [amsat-bb] Re: Arrow antenna reconfiguration results - UPDATE
Howdy Jeff,
Someone asked and here we go. A file attachment follows.
Actually
individually to give an accurate number for each.
73,
Jeff WB3JFS
- Original Message -
From: Joe n...@mwt.net
To: Gary Joe Mayfield gary_mayfi...@hotmail.com
Cc: 'AMSAT-BB' amsat-bb@amsat.org
Sent: Friday, September 25, 2009 6:42 PM
Subject: [amsat-bb] Re: Arrow antenna reconfiguration
*Sent:* Thursday, October 01, 2009 1:09 PM
*Subject:* Re: [amsat-bb] Re: Arrow antenna reconfiguration
results - UPDATE
Howdy Jeff,
Someone asked and here we go. A file attachment follows.
Actually the diplexer looks pretty good. Less than half a db of
loss at VHF
- Original Message -
From: Joe n...@mwt.net
To: Gary Joe Mayfield gary_mayfi...@hotmail.com
Cc: 'AMSAT-BB' amsat-bb@amsat.org
Sent: Friday, September 25, 2009 6:42 PM
Subject: [amsat-bb] Re: Arrow antenna reconfiguration results - UPDATE
as in the texts below, there is something else going
to endure!
Mike WB1AAT
-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Joe
Sent: Friday, September 25, 2009 6:43 PM
To: Gary Joe Mayfield
Cc: 'AMSAT-BB'
Subject: [amsat-bb] Re: Arrow antenna reconfiguration results - UPDATE
Hi Bruce and all,
No problem. Actually, I wouldn't call it research as much as curiosity.
Maybe the research will come later when developing something better. :) I
know the antenna works but can it be made to perform better? The antenna
itself is of great quality and workmanship, it's the
To: Gary Joe Mayfield gary_mayfi...@hotmail.com
Cc: 'AMSAT-BB' amsat-bb@amsat.org
Sent: Friday, September 25, 2009 6:42 PM
Subject: [amsat-bb] Re: Arrow antenna reconfiguration results - UPDATE
as in the texts below, there is something else going on here.
That Diplexor can not be all that bad
Jeff --
I really appreciate you doing this research for us. Two additional
ideas come to mind:
1. Those of us with FT-817s could configure its two RF ports to use
different bands and connect the rig directly to the beam's antenna
connectors, bypassing the duplexer. For this purpose,
On Sep 25, 2009, at 7:53 AM, Bruce Robertson wrote:
2. If I'm correct, your replacement duplexer is rather larger than the
one it is replacing. It would be a great topic for a Journal article
if someone with the necessary equipment and expertise were to design a
replacement with less loss.
- Original Message -
From: Bruce Robertson ve9...@gmail.com
To: Jeff Yanko wb3...@cox.net
Cc: AMSAT-BB amsat-bb@amsat.org
Sent: Friday, September 25, 2009 3:53 PM
Subject: [amsat-bb] Re: Arrow antenna reconfiguration results - UPDATE
Jeff --
snip
2. If I'm correct, your replacement
as in the texts below, there is something else going on here.
That Diplexor can not be all that bad. two reasons.
How many db down is the front to side of that antenna?
and I can not imaging someone would sell a diplexor that has greater
than 20 db of losses.
because of the statement that
will tell the condition
of the diplexer.
Art,
KC6UQH
-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Joe
Sent: Friday, September 25, 2009 6:43 PM
To: Gary Joe Mayfield
Cc: 'AMSAT-BB'
Subject: [amsat-bb] Re: Arrow antenna reconfiguration
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