Search found 118 matches

by Len Spyker
Wed Apr 18, 2018 6:45 am
Forum: Yahoo groups backup
Topic: Now fully committed...
Replies: 7
Views: 2449

Re: Now fully committed...

<t>Attachments :[/list](Warning advertising content) &nbsp;Hello committedApart from sales of Coax filters (80+) to this group &nbsp;I designed and sold 20+ of my custom designed MSA CB with the plug in custom cypress CPU:USB PCB This earlier 2 part board was called BOARD1 other variants wer...
by Len Spyker
Thu Apr 05, 2018 11:45 pm
Forum: Yahoo groups backup
Topic: SMA Connectors Sources
Replies: 9
Views: 2709

Re: SMA Connectors Sources

Hi Group &nbsp;For years I have used this Chinese RF site with very helpful people. &nbsp; &nbsp;Len Spyker &nbsp;
by Len Spyker
Sat Nov 18, 2017 2:56 am
Forum: Yahoo groups backup
Topic: Master Oscillator Phase Alignment
Replies: 3
Views: 1586

Re: Master Oscillator Phase Alignment

<t>Hi I have used some quite good &#8220; zero phase&#8221; IC buffers, up to 100 MHz?.These IC were used by me in PXI backplanes, high speed serial peripheral busses and fibre optics projects. I will try to find the out the IC details from my client and let you know.Regards Len Spyker &...
by Len Spyker
Wed Nov 15, 2017 6:33 am
Forum: Yahoo groups backup
Topic: Info
Replies: 5
Views: 1970

Re: Info [7 Attachments]

<t>Hi Re 0.5MH 1.0 1.5 noise &nbsp;The 0.5MHz may be coming from the &nbsp;LM2733 switchmode flyback IC used as the VCO 23V generator.Depending on the model the fundamental frequency &nbsp;can be from 0.6 MHz &nbsp;to 1.8 MHzEnough has already been in the group said about using prope...
by Len Spyker
Wed Nov 08, 2017 10:01 am
Forum: Yahoo groups backup
Topic: Cavity filter versus Saw filter
Replies: 3
Views: 1751

Re: Cavity filter versus Saw filter

<r>Attachments :<LIST type="decimal"><s>[list=1]</s><LI>[url=file:///C:\Users\jose\AppData\Local\PG Offline 4\Attachments\spectrumanalyzer\DSCN0317-12790.JPG t=_self]DSCN0317-12790.JPG[/url]</LI><e>[/list]</e></LIST>[/list]Hello Group &nbsp;For the MSA I have sold 20 or so of the 2 cavity coax f...
by Len Spyker
Mon Oct 02, 2017 2:57 am
Forum: Yahoo groups backup
Topic: Voltage Booster
Replies: 16
Views: 4101

Re: Voltage Booster

<t>Dear groupSo yet another nasty tantalum cap failure in near rated voltage.20 years ago in designing subsea oil-gas wellheads controls and other PCBs I banned the use of all tantalum caps! 15 years later on there have been no cap failures. &nbsp;A small step for a PCB a large &#8230;Len Sp...
by Len Spyker
Tue Sep 19, 2017 8:40 am
Forum: Yahoo groups backup
Topic: MSA and QT (straw poll)
Replies: 6
Views: 2042

MSA and QT (straw poll)

<t>Hello &nbsp;Claudio I also think that a MSA QT GUI version would be a real good thing. QT is multi-target platform and is embedded orientated.I want a common GUI compiler tool that is a joy to use and hopefully productive. For a MSA -> QT project to succeed we need a TEAM + TESTERS with at le...
by Len Spyker
Sat Sep 16, 2017 1:16 pm
Forum: Yahoo groups backup
Topic: MSA CB EZ-USB Cypress PCB update
Replies: 4
Views: 1871

Re: MSA CB EZ-USB Cypress PCB update [3 Attachments]

<t>Hello Jeroen PE1RGE1. Price for 2 of my 4 layer blank MSA EZ-USB PCB including 2 x EZ-USB [10x2] socket connectors U$24 + U$18 postage.<br/> My Digikey BOM estimate qty 1 around U$30<br/> <br/> 2. To aid my physical recovery and also bored out of my head I made up 10 x BOM parts kits for this EZ-...
by Len Spyker
Mon Jul 24, 2017 11:34 pm
Forum: Yahoo groups backup
Topic: MSA Coax filters
Replies: 0
Views: 2345

MSA Coax filters

<r>Hello group. Re MSA Coax filters. So far I have made 81 of the MSA 1.013GHz coax cavity filters for this group.<B><s>[b]</s>SSA-MSA 1013 MHz coax filter prices.<e>[/b]</e></B>4 cavity coax filter, &nbsp;fully built and tested is U$90 plus postage. Kit of coax parts is U$45 plus postage. 2 cav...
by Len Spyker
Sat May 20, 2017 7:32 am
Forum: Yahoo groups backup
Topic: new PCB: MSA CB EZ-USB
Replies: 11
Views: 3653


<t>Hi Group(1)I have ordered 10 MSA CB EZ-USB boards from SeeedStudio to play with.The reason for the FX2 plugin instead of putting the parts on the board directly is cost and time saving for my customers.Just the FX2 parts alone bought through Digikey channels are 2-3 time the cost of the whole FX2...