Re: [Repeater-Builder] Re: Looking for Vicor dc-dc converter module for IFR repair
Try on ebay.com i found them recently. And there they can be MUCH cheaper than buying new one... - Originalna poruka - Pošiljalac: wspx472 Datum: Utorak, Januar 12, 2010 14:39 Tema: [Repeater-Builder] Re: Looking for Vicor dc-dc converter module for IFR repair Primalac: Repeater-Builder@yahoogroups.com > Actually, that's not goofy at all. Quite common, actually to > step up the rectified line voltage, then step it down again. I > have encountered the same problem with out of production parts. > Seems there are folks who attempt to buy up remaining quantities > of obsolete parts and re sell them at a premium. I remember > paying $2.50 a piece for some 1/8 watt carbon comp resistors a > few years ago. Ridiculous. > > > > --- In Repeater-Builder@yahoogroups.com, DCFluX wrote: > > > > Sounds like a goofy design, the only reason you'd do something > like that was > > because a world voltage input SMPS didn't exist. > > > > Is the 300 volts used for some other purpose like the monitor? > > > > If not I'd replace the 2 modules with a single 15V 200W SMPS > such as the > > Meanwell SP-240-15, assuming it would fit in the serivce > monitor, never seen > > the inside of one. > > > > > > > > > > > Yahoo! Groups Links > > >
Re: [Repeater-Builder] Tools
And nothing originally about trimming tools?
I should travel to Au in a week or so, and then will take a look there, but if
anyone have other ide for quality trimming tool
Milan YU7XW
- Originalna poruka -
Pošiljalac: Ray Brown
Datum: Subota, Septembar 12, 2009 5:34
Tema: Re: [Repeater-Builder] Tools
Primalac: Repeater-Builder@yahoogroups.com
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> .ygrp-photo-title {
> CLEAR: both; FONT-SIZE: smaller; OVERFLOW: hidden; WIDTH: 75px; HEIGHT:
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> DIV.ygrp-photo {
> BORDER-RIGHT: black 1px solid; BACKGROUND-POSITION: center 50%;
> BORDER-TOP: black 1px solid; BORDER-LEFT: black 1px solid; WIDTH: 62px;
> BORDER-BOTTOM: black 1px solid; BACKGROUND-REPEAT: no-repeat; HEIGHT: 62px;
> BACKGROUND-COLOR: white
> }
> DIV.photo-title A {
> TEXT-DECORATION: none
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> DIV.photo-title A:active {
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> DIV.attach-table DIV.attach-row {
> CLEAR: both
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> DIV.attach-table DIV.attach-row DIV {
> FLOAT: left
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> P {
> CLEAR: both; PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM:
> 3px; OVERFLOW: hidden; PADDING-TOP: 15px
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> DIV.ygrp-file {
> WIDTH: 30px; valign: middle
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> DIV.attach-table DIV.attach-row DIV DIV A {
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> I think this one is it.
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> Thank you all. :-)
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> Ray, KB0STN
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> - Original Message -
> From:
> Derek
> J. Lassen
> To: Repeater-Builder@yahoogroups.com
>
> Sent: Friday, September 11, 2009 10:46
> AM
> Subject: RE: [Repeater-Builder]
> Tools
>
> The
> tool you want...
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=27013661&ru=http://search.ebay.com:80/27013661_W0QQampsspagenameZhQ3ahQ3aadvsearchQ3aUSQQcatrefZC5QQdfspZ32QQfclZ3QQfromZR7QQfrppZ50QQfsooZ2QQfsopZ32QQnojsprZyQQpfidZ0QQsacatZQ2d1QQsofocusZbsQQfviZ1
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> At 09:15 9/11/2009 -0400, you wrote:
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> > Speaking of tools,
>how about the specialized wrenches that
> > can take the SMA
>connector
> > nut loose on, oh, say, Yaesu VX 5 or FT-50's?
> >
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> > Ray, KB0STN
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> I don't have either of those radios, but are you
>talking about a spanner
> wrench or spanner driver?
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> Retaining ring
>pliers sometimes work too. The ones with interchangable tips
> are the most
>versatile.
>
> --- Jeff WN3A
>
>
> Individual
> Email|Traditional ID required)
> Change settings via email: Switc
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> Visit Your Group_._,___
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Re: [Repeater-Builder] Tools
to cheap to be true ceramics... And also, cannot be used for hexa type of small coils. I am looking maybe for Belzer or Bernstein trimming tools - Originalna poruka - Pošiljalac: DCFluX Datum: Cetvrtak, Septembar 10, 2009 17:58 Tema: Re: [Repeater-Builder] Tools Primalac: Repeater-Builder@yahoogroups.com > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Doesn't RF parts have some ceramic ones? > > On Thu, Sep 10, 2009 at 2:09 AM, mpavlica wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > Hello! > I am looking for some QUALITY RF trimming tools. > Here I can find only plastic rubbish and want to get some nice ceramic tools > (whole set of them, for trimming capacitors and those hexa for coils). > Any suggestions? > > Thanks in advance! > > Milan Pavlica > YU7XW > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
[Repeater-Builder] Tools
Hello! I am looking for some QUALITY RF trimming tools. Here I can find only plastic rubbish and want to get some nice ceramic tools (whole set of them, for trimming capacitors and those hexa for coils). Any suggestions? Thanks in advance! Milan Pavlica YU7XW
Re: RE: [Repeater-Builder] Re: UHF antenna
This is how it goes. First, i had high SWR, by any calculations. I try to made two versions of antennas: One with just hot on top of 1/4 element and one version with 1/4element with short hot and cold end. with Slim Jim, i got good results, SWR a little bit high but ok (1.6) and had good range. With co-co antenna i had problem with sensitivity. Yes, it was only 4 elements. SWR issue is solved with NO turns, rings or whatsoever! Point is than when cable EXIT from balun (copper tube) (i used rg58, .66 v factor) it has to have some xx cm length before cut and connect to connector (i didnt have female N so used SO239). There i connected RG213 and with a few different lengths of RG213 i got SWR between 1.1 to 1.3 max on same band. BUT swr is not a big problem (usually hams magnify that problem) i am couriouse, since i have my Rohde & Schwarz CMS54 here, i can try to generate some low power signal and to do measurements with co-co and some simple 1/4 element to see difference. BUT, is there anything that i am doing wrong? any tips? As you can see below, there are two links for antennas that i made... maybe i did something wrong? If anyone can help me, i can upload some pictures of mine antennas to see what problem is... Thanks in advance! - Originalna poruka - Posiljalac: Peter Dakota Summerhawk <[EMAIL PROTECTED]> Datum: Cetvrtak, Jul 31, 2008 8:58 Tema: RE: [Repeater-Builder] Re: UHF antenna Primalac: Repeater-Builder@yahoogroups.com > A real simple test I had for deaf antenna: this was on 2M so I > stripped a > section of coax off eh end to form a 1/4 wave antenna and > connected it to > the original run of coax to make sure I could be heard with a > few short > tests. Turns out it was the antenna in the end and not the coax > like I > thought. Might give it a try and see if that doesn't work for > you in a > pinch. > That way you know if it's the antenna or another problem. > Just throwing out ideas. > > -Original Message- > From: Repeater-Builder@yahoogroups.com > [mailto:[EMAIL PROTECTED] On Behalf Of Milan Pavlica > Sent: Wednesday, July 30, 2008 8:32 AM > To: Repeater-Builder@yahoogroups.com > Subject: [Repeater-Builder] Re: UHF antenna > > Is it possible that no one have pictures of its home made antennas? > As i wrote, i have a problem with sensitivity, think that > antenna is > "deaf". Will try to compare with Celwave antenna and Rohde&Schwarz > CMS54 test-set as receiver to see differences > Please help me... TNX in advance! > > > --- In Repeater-Builder@yahoogroups.com, "Milan Pavlica" > <[EMAIL PROTECTED]> wrote: > > > > Hello! > > I made UHF coax collinear antenna, two version, one is from > > http://www.repeater-builder.com/antenna/wa6svt.html > > and second is from > > > http://www.para.org.ph/membersarticles/DU1ANV/VHF%20Collinear%20Antennas.htm > > in both cases i can get good SWR but i am not so sure did i > made it OK > > (have a feel that it is deaf on receive) > > I am asking, if anyone played with this stuffs (i made > 4elements, for > > start only with RG58), maybe with some tips and pictures, just > to see > > am i doing something wrong > > THANKS IN ADVANCE! > > Not to disturb list, please use private mail. > > THANKS AGAIN! > > YU7XW > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > Yahoo! Groups Links > > > mailto:Repeater-Builder- > [EMAIL PROTECTED]
