[UK-CONTEST] What is the best VHF Radio

[John Lemay]

Neil

If you do a Google you will find :- 

http://lea.hamradio.si/~s53rm/JAVORNIK%20144.htm

Take care with the FT1000mp. Overall it's a very good rig, but the dynamic
range on 28MHz (the frequency most of us use for transverting) is much
poorer than on 14MHz (where most of the reviewers do the receiver testing).

I believe there is a general feeling these days that it is often your
neighbours transmit signal which is the limiting factor, rather than your
receiver. However, as Jiri says, most black boxes are a compromise, and
operating with a noise blanker on can make even the best signals sound awful
!

GL

John G4ZTR




-----Original Message-----
From: uk-contest-bounces at contesting.com
[mailto:uk-contest-bounces at contesting.com] On Behalf Of G3RIR
Sent: 08 September 2008 10:32
To: uk-contest at contesting.com
Subject: Re: [UK-CONTEST] What is the best VHF Radio

Ian,

Thanks for the response. I have never heard of Javornik perhaps you can let
me have a link.

I have an FT1000mp as well as my FT847 and have a DEM transverter for 432
which was used with the FT1000mp. I moved to the FT847 for contesting on 432
as there are not too many very strong signals on 432 from our NFD location
(G3SDC/P on the Norfolk coast (JO02st)) and it is much more convenient and
smaller that the FT1000mp etc!!

I have recently been active on 144 and that is where the FT847 might not
have a robust enough receiver. However I found only one signal splattering
during the weekend from my home qth in IO92 so I am not blaming the rx just
yet.

What did you find wrong with the FT1000mp transverter output? Could it be
cleaned up with filtering? When using the FT1000mp for a transverter I
switch off the pa completely from inside the little top lid as this is safer
than someone accidentally running too much power from the pa into an
attenuator.

Neil, G3RIR


-----Original Message-----
From: uk-contest-bounces at contesting.com
[mailto:uk-contest-bounces at contesting.com] On Behalf Of Ian Burns
Sent: 08 September 2008 09:13
To: uk-contest at contesting.com
Subject: Re: [UK-CONTEST] What is the best VHF Radio

I can thoroughly recommend the FT100MP and Javornik II transverter 
combination. The receiver is not totally bomb proof but is noticeably 
better than my FT847. We used the setup at G0FBB in the 2m trophy this 
weekend and had no real problems despite some very loud signals on the band.

The only drawback of this combination is that the transverter output of 
the FT1000 can be too dirty to use on a crowded band. It's a fair way 
off the VHFCC recommendations of -100dBc... The main o/p is clean enough 
to use via a suitable attenuator though.

73
Ian.

Dave wrote:
> At 20:21 07/09/2008 +0100, G3RIR wrote:
>
> There is a useful comparison of HF Tcvrs here 
> http://www.df9ic.de/tech/trxtest/trxtest.html
>
> 73 Dave G4RGK
>
>   
>> Earlier today I reported to a station on 144MHz that his signal was very
>> wide. I could hear splatter about 12kHz either side of his signal.
>>
>> I turned off my mast-head pre-amp, switched in an attenuator and turned
my
>> beam side on so that I only had s7 registered on my s-meter. The splatter
>> was still noticeable.
>>
>> The station concerned said he was definitely not over-driving anything.
He
>> asked what receiver I was using and on being told it was an FT847 he
>> suggested that it was my receiver at fault. This may of course be the
>> problem but he wasn't the only loud signal on the band but was by far the
>> widest.
>>
>> What are the group members' views on the FT847 in handling such
situations
>> and indeed what is the best receiver around for 144 and 432?
>>
>> I am also interested to know what is the specified noise figure for the
>> FT847; of course the manual only refers to sensitivity!
>>
>> Neil, G3RIR
>>
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>>     
>
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