Re: LF: FW: powered down from "4" to "2" on IC706mk2G due to interference with home routers es QRM from XYL es kids

[Wolfgang Büscher <dl4yhf@freenet.de>]

Yes of course Mal, but a simple low-Q LC tank will do.

See http://www.qsl.net/dl4yhf/mf/mf.html#IC706_on_MF

(shows the waveform seen on "my" old IC706. The FET driver turns this into square wave anyway)

Am 11.01.2016 um 23:22 schrieb Mal Hamilton:

Wolf

Old 706 mk1 not too good either maybe needs a band pass filter before amp

Mal/g3kev

Sent from my iPhone

On 11 Jan 2016, at 19:48, Wolfgang Büscher <dl4yhf@freenet.de> wrote:

Hi all,

Beware with the output waveform - my IC 706 MK 2 G produces more "Volts peak peak" on MF than an older IC706 (first model), but on a 50 Ohm dummy load, most of the energy was emitted on harmonics ! From the old 706, it was almost a sinewave, so that's what I usually use as the 'exciter' for a linear MF PA.

Cheers,
  Wolf . 

Am 11.01.2016 um 12:20 schrieb James Cowburn:

HI all

Interesting expt.  I’ve had to wind back the power setting on the IC706mk2g from “4” to “2” so assuming a halving i.e. 3dB.  (this was because the MF RF was making my kids skype and XYL’s netflix run rough!, one wonders who pays the bills round here!!)

So far it seems to have made a -1dB to -2dB change in some more Dx reports while others have not changed or increased even.

I’ll stick with “2” for now.

Cheers

Jim G7NKS IO92ub