[amsat-bb] Looking for users of 2M2CP22 & 436CP42 or similar

[Dimitry Borzenko]

Hi Luis.
I have use 2M2CP22 antenna as H and V with coax for each polarization 
routed  towards the end of the boom.
I have change F-type connectors on the each dipole to the N-type.
Antenna was connected to the external polarization switch box, all 
system was works GOOD, have many sat and EME QSOs.
If U do not need CP antenna why U bought it and not 2MXP22.

GL with ur project.

de 4z5cp

------ Original Message ------
From: "EC4TR Luis" <ec4tr.luis at gmail.com>
To: amsat-bb at amsat.org
Sent: 31.07.2018 11:53:06
Subject: [amsat-bb] Looking for users of 2M2CP22 & 436CP42 or similar

>Hi all
>I just bought these two antennas and I want to use them without the 
>phaser for circular polarization.
>
>I want to use a switch for H and V in the mast, the idea is to use it 
>for terrestrial & satellite with vertical rotor.
>
>I also wanted to know if routing the two coaxial cables along the boom 
>until the horizontal crossbeam can affect the radiation diagram etc.
>
>I have consulted with the guys from M2 and they advise to route the 
>coaxial cables towards the end of the boom and leave them hanging, but 
>that makes the installation very complicated and will cause the boom to 
>go awry.
>
>They also tell me about the possibility that VSWR does not match in UHF 
>due to the phasing cables.
>
>Have any of you made similar changes with M2 antennas?
>
>This is the email exchanged with them
>
>
>Hello Jose,
>
>If you route the feedlines down the boom, the gain, pattern and VSWR 
>will be degraded.  No metal can run parallel to the elements.  We 
>recommend our L-brace kit, http://www.m2inc.com/FGLBKAM so that your 
>coax is not hanging.  One L-brace kit is required per antenna.
>
>Additionally, if you remove all of the phasing cables, the VSWR may not 
>match the original settings (especially for 70cm).  The antenna 
>elements are tuned specifically to counteract any interaction with the 
>phasing cables.  You may (or may not) be able to achieve a reasonable 
>match when converted to V/H linear polarity.  We have not done any 
>engineering/testing in this configuration.
>
>Regards,
>*/Robert Brown, KR7O/*
>Marketing and Sales
>
>
>73 Luis
>EC4TR
>-- https://www.qrz.com/db/ec4tr https://www.facebook.com/ECfourTR 
>https://twitter.com/EC4TR?lang=es
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