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From: "captbrian" <captbrian@ukonline.co.uk>
To: <rsgb_lf_group@blacksheep.org>
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Date: Fri, 9 Jun 2006 13:33:27 +0100
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Subject: LF: Re: IC706 vs TS850
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Thanks for that.  It certainly helps _me_.   I have a 706/2/g but no 850.

The front end of my 706 is so wide it recieves all the world at the same
time !  but I am only one mile from a MW broadcast station .

  I can see I need at least a V.  narrow tuned pre-amp.  Any ideas where to
find one? [ Newbury Rally next week ]

I too consider the 706's inability to switch off its own AGC is bad designer
error. Someone ought to be able to think up a rig mod. ?

Bryan  - G3GVB / AC4UA


----- Original Message -----
From: "Mike Dennison" <mike.dennison@ntlworld.com>
To: <rsgb_lf_group@blacksheep.org>
Sent: 09 June 2006 09:41
Subject: LF: IC706 vs TS850


> Having changed my main station radio from an IC706 Mk1 to a TS-
> 850SAT, I have been able to compare the two at LF.
>
> The TS-850 is better than the IC-706 because:
> * It is much more sensitive at LF (even better than the IC-706 plus
> LF pre-amp). It works well down to 30kHz, though not specified.
> * Strong signal handling is better.
> * The AGC can be switched off.
> * More selectivity options (variable bandpass, notch).
>
> The IC-706 is better than the TS-850 because:
> * Frequency readout is down to 1Hz, rather than the 850's 10Hz.
> * Tuning is in 1Hz steps. The 850 is 10Hz, even on so-called 'Fine'
> which does not fine tune, it just reduces the Hz/revolution.
> * Frequency stability is better.
> * Frequency accuracy is better. My old and battered 706 could be set
> accurately to within 1Hz anywhere in its spectrum. I could
> confidently measure frequency with Argo down to 0.1Hz after
> calibrating the radio against 198kHz. By contrast, my 850 has an
> error varying from zero to several Hz from one end of each 500kHz
> 'chunk' to the other.
> * The tuning knob has a finger hole which makes frequency changes
> much easier, both when fine tuning and rapidly changing frequency.
>
> In short, the TS-850 is a better radio, but the synthesiser and its
> tuning knob are poorer than the IC-706.
>
> Hope this helps someone.
>
> 73 de Mike, G3XDV
> ==============
>
>
>