[Flexradio] 6 meters receive on 5000

[Tim Ellison]

This is exactly the route I took.  I have approximately 160' of coax from the antenna to the transceiver, so I installed a SSB mast mounted preamp for 6m.  Works great.  No regrets.


-Tim


-----Original Message-----
From: flexradio-bounces at flex-radio.biz [mailto:flexradio-bounces at flex-radio.biz] On Behalf Of Philip M. Lanese
Sent: Saturday, June 27, 2009 12:45 PM
To: Bob McGwier; flex radio
Subject: Re: [Flexradio] 6 meters recieve on 5000

Also -- Everyone who gets seriously interested in weak signal VHF/UHF operation
quickly learns that the ONLY place to put a pre-amp, tailored for each band of
interest, is as close to the antenna as humanly possible (usually in an
enclosure close to the top of the tower).

This allows SHORT runs of *expensive*, LOW loss cable between the antenna and
the pre-amp and lower cost, more lossy, runs of cable between the pre-amp and
the receiver/transverter in use.

No manufacturer can build the kind of performance gain that is provided by this
simple "add-on" into a production radio.  PHYSICS rules the game.

Phil, K3IB

----- Original Message ----- 
From: "Bob McGwier" <rwmcgwier at gmail.com>
To: "flex radio" <FlexRadio at flex-radio.biz>
Sent: Saturday, June 27, 2009 10:53 AM
Subject: Re: [Flexradio] 6 meters recieve on 5000


> If you look outside of your own personal needs you will see that the
> Flex 5000 was Flex's first really serious entry into high performance
> transceivers.  As much as the SDR-1000 changed the world for me
> personally,  it was never meant to be a high end transceiver project.
> That it got as far as it did bespeaks of the tenacity and cleverness of
> its designer.
>
> On the Flex 5000, though it is Flex's first major entry, it made it at
> the top of the list of entries in receiver performance on Sherwood
> Engineering and ARRL test sites and is still in the top two or three.
> The Flex 5000 has extremely good performance for HF low bands.  Flex
> 5000 would not sell well if it had poor low band performance and there
> would be no 3000 if that were the case is my short version of my
> opinions on this matter.  The 3000 does NOT equal the 5000 in receiver
> performance on the low bands.  I think most will agree that operating
> well on 160m-20m is more important to sales than 6m.
>
> It takes a very inexpensive preamp for 6m to make it a top performer and
> it is a complete triviality to hook it into the loop provided on the
> back of the radio and adjust the operation to automatically use that
> preamp on 6 and on 6 only.
>
> Bob
> N4HY



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