Here are some outputs as promised; it is definitely the 30MHz LPF in circuit above 15MHz, but I am surprised by the amplitude of the LO even when it is as high as 49MHz.
I will check, check, check! Mark On 30/01/2014 16:05, Ashhar Farhan wrote:
mark,note that the audio is 'hissier' than a usual transceiver, this is due to larger bandwidth. you could try a 0.1 across the two ends of the volume control to reduce the bandwidth.- farhanOn Thu, Jan 30, 2014 at 5:44 PM, Mark G0MGX <mark.g0mgx@xxxxxxxxx <mailto:mark.g0mgx@xxxxxxxxx>> wrote:I'm very pleased with how it sounds; can't wait for the 1st QSO! I've just done some experiments this morning with a new design/replacement for the 15MHz LPF, which I can't get quite right as Farhan designed: http://g0mgx.blogspot.co.uk/2014/01/minima-remaking-15mhz-lpf.html I'll do the sweep requested later today as I move onto TX testing... Mark G0MGX On 30/01/2014 10:33, jerry@xxxxxxxxxxxxxxxx <mailto:jerry@xxxxxxxxxxxxxxxx> wrote: Good job Mark, the audio sounds great.I can't wait to finish mine. Jerry K5LRU -------- Original Message -------- Subject: [minima] Re: My Minima is Alive and well From: "Steve VK2SJA" <vk2sja@xxxxxxxxxxx <mailto:vk2sja@xxxxxxxxxxx>> Date: Thu, January 30, 2014 4:13 am To: minima@xxxxxxxxxxxxx <mailto:minima@xxxxxxxxxxxxx> Way to go Mark! I knew you'd finish before I even turned on the iron!! Good audio on the video. Thanks for posting. 73, Steve. Morning Team An update from me, RX demo video here: http://g0mgx.blogspot.co.uk/2014/01/my-minima-is-alive-and-well.html the RX sounds great! Mark G0MGX
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