[minima] Re: My Minima is Alive and well
- From: Mvs Sarma <mvssarma@xxxxxxxxx>
- To: minima@xxxxxxxxxxxxx
- Date: Thu, 30 Jan 2014 21:59:06 +0530
these LPFs have good attenuation around the stop point but after some
increase again allow
why not we check behavior of LPF, 50% above the band under consideration,
say upto23MHz for a 15mhZ LPF.
On Thu, Jan 30, 2014 at 9:47 PM, Mark G0MGX <mark.g0mgx@xxxxxxxxx> wrote:
> 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.
>
> - farhan
>
>
> On Thu, Jan 30, 2014 at 5:44 PM, Mark G0MGX <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 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>
>>> Date: Thu, January 30, 2014 4:13 am
>>> To: 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
>>>>
>>>>
>>>>
>>
>>
>
>
--
Regards
Sarma
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