Re: Simple spur fix
Yes and no Nick.? The parts either side are matching netwoeks and not required based on results. Can you wait for instructions?? Your trying to make simple complicated. IF you have a filter to do it
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ajparent1/kb1gmx
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#58807
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Re: Simple spur fix
---> 45mhz crystal filter
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Nick VK4PP
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#58806
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Re: Stone Soup
Topic wander extreme,? example, we have.? Babble we must!
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ajparent1/kb1gmx
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#58805
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Re: Simple spur fix
Ah, yes I see that, Y1 is just the 45mhz crystal. , but what bout all the other components around the actual crystal? The inductors and capacitors too. So when I talk about a complete 45mhz filterIi
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Nick VK4PP
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#58804
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Re: Simple spur fix
On Wed, Sep 5, 2018 at 05:58 PM, Fanima Dekoi wrote: The way I am understanding what I've read on it so far, it would seem the simplest solution to the worst of the issues would be just to tear out
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ajparent1/kb1gmx
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#58803
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Re: Simple spur fix
On Wed, Sep 5, 2018 at 05:54 PM, Nick VK4PP wrote: Would it not be even better to then implement the complete 45mhz filter prior to the mixer? See the device on he board labeled Y1, that is a complete
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ajparent1/kb1gmx
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#58802
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Re: Simple spur fix
The way I am understanding what I've read on it so far, it would seem the simplest solution to the worst of the issues would be just to tear out the pcb traces between the relays and the ends of the
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Fanima Dekoi
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#58801
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Re: Simple spur fix
That's what I am asking: would leaving in the R and C disrupt the circuit less?
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Nick VK4PP
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#58800
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Re: Simple spur fix
I suggest looking at these:
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Dr. Flywheel
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#58799
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Re: Simple spur fix
Hi Allison. Thanks for the explanation, I see where I was confused now... So is a?TOYOCOM 612S07? just a crystal, a filter, an oscillator? can find much on that part... Would it not be even better
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Nick VK4PP
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#58798
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Re: si5351 crosstalk
#radiuno
Farhan, Testing says buffers work The SN74AUP1T04 inverter one per package (4 pins like the mmbt3904s) or the 74LVT04 (6 per)work well. I can do that with transistor or Fet but then I need bias and
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ajparent1/kb1gmx
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#58797
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Re: Simple spur fix
Nick, Seriously?? ?The easy way is remove the part.? To put it inline you have to cut a trace, no?? Sure you could? but why? Could someone with some technical understanding give us a quick
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ajparent1/kb1gmx
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#58796
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Re: Stone Soup
Gee, I grew up with Lafayette radio and Harrison radio so that goes well back over a half century. Never mind other places like that. Pretty much post WWII the industry for parts and radios existed.?
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ajparent1/kb1gmx
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#58795
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Re: Stone Soup
Du machts einer Witz ??? ?Perhaps a stone in a a settled pond.. and interference patterns will radiate..
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Timothy Fidler <engstr@...>
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#58794
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Re: Ubitx V3 Please Help, ANTENNA Pins on PCB have SHORTED no Receive
#ubitx
#ubitx-help
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Guy WB7SZI <sgbridge@...>
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#58793
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Re: Stone Soup
a 45mhz crystal is a stone....
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Nick VK4PP
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#58792
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Re: si5351 crosstalk
#radiuno
All may not be lost. The spurs start as you start to draw power. So, don't draw power. A source/emitter follower will lightly load the si5351 outputs. Buffering helps. There are other ways to use
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Ashhar Farhan
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#58791
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Re: Stone Soup
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jim <ab7vf@...>
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#58790
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Re: Version 4 PCB
#ubitx-help
#ubitx
I'm sure you missed the question from the person asking for the same thing of the V3 board.? The answer is does not exist or has not been published. Allison
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ajparent1/kb1gmx
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#58789
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Re: Personal Best Distance, SSB Phone
#ubitx
Thanks! David A Posthuma, President E-Church Essentials, LLC <http://www.assessme.org/> AssessME.org Author: <http://www.clcpublications.com/shop/product_info.php?products_id=767> Made for a Mission
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David Posthuma
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#58788
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