[CQ-Contest] ICOM 7610 & C31XR

[Trent Sampson]

Hi Syl,


Have used a C31XR in CQWW SSB with Tri feed with two amplifiers - The only filters were W3NQN 300 watt filters between the Radio and the amplifier - no noticeable signal detected on either rig.


Coax was RG8X


RIG 1 was FT1000MP Emtron DX1

Rig 2 was a FT2000 VL1000


Good luck

Trent
VK4TS
PO Box 275
Mooloolaba 4557
0408497550



________________________________
From: CQ-Contest <cq-contest-bounces at contesting.com> on behalf of rjairam at gmail.com <rjairam at gmail.com>
Sent: Monday, 19 March 2018 05:13
To: .. VE5ZX
Cc: cq-contest at contesting.com
Subject: Re: [CQ-Contest] ICOM 7610 & C31XR

Hi Syl,

I am not sure what you mean. The IC7610 doesn't do full duplex,
therefore you cannot receive and transmit simultaneously.

If I were using the tri feed with two radios I would want nothing less
than the 4O3A combiner for full isolation plus individual bandpass
filters.

http://www.4o3a.com/products/high-power-filters/combiner/
Combiner – 4O3A Signature<http://www.4o3a.com/products/high-power-filters/combiner/>
www.4o3a.com
When analyzing a 4O3A Triplexer System investment bear in mind the savings in antennas, towers, feedlines and maintenance that will accrue. It’s worth noting that ...




In fact I don't know anyone who has a working tri-feed, and this
requires only a single coax from your tribander, better isolation too.

73
Ria, N2RJ

On Sun, Mar 18, 2018 at 9:05 AM, .. VE5ZX <ve5zx at hotmail.com> wrote:
> I am considering purchasing a Icom 7610 to use with my C31XR with separate
> feedlines and 500 watt linear.
>
> Any ideas how much filtering I need to ensure protection of the 7610 SDR frontend?
>
> I have a couple of ICE filters I could use
>
>   tnx - Syl - VE5ZX
>
>
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