K3EXREF and NavSync CW12-TIM GPS Module
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This is an inquiry I sent to Elecraft, along with their response:
I’ve been considering adding the K3XREF to my K3. Can you tell me if the device listed in this link is a suitable 10MHz source? (Re: Navsync CW12-TIM GPS Timing Module. Price and technical details at the link:) http://www.semiconductorstore.com/cart/pc/viewPrd.asp?idproduct=41718 Thanks, Jon / KF5TFJ ===== Jon, We have not tested that unit with the K3XREF. Looking at the specs, it's uses a square wave (most use a sign) and the output is a little higher output then 0dBM which most units use. I would recommended asking on our Elecraft reflector if anyone has used and tested it with the K3. Regards Howard K6IA ===== So, has anyone used the CW12-TIM with K3EXREF? ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: K3EXREF and NavSync CW12-TIM GPS Module
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If Howard is correct on the output level, it's a little low for the
K3EXREF's input. From the manual: Connect the external 10 MHz signal source to the K3 rear panel REF. connector. The 10 MHz source should have a signal level between +4 dBm and +16 dBm, nominal. For square wave sources, 2VDC to 3.3VDC peak is optimum. If the source is a 5V logic level, use a 50-ohm resistor in series with the input. Caution: To avoid damage to the K3EXREF, do not exceed these levels. Many K3EXREF users have Trimble Thunderbolt units. These work quite well and have an output level of about 12.5 dBm, sine wave. Thunderbolt units can be acquired surplus for $40 - $100 and are readily available on eBay, etc. I'd recommend you buy one of the later models, because these have an integrated 12V-input power supply. 73, matt W6NIA On Wed, 8 Jan 2014 10:00:46 -0600, you wrote: >This is an inquiry I sent to Elecraft, along with their response: > >Ive been considering adding the K3XREF to my K3. Can you tell me if the device listed in this link is a suitable 10MHz source? (Re: Navsync CW12-TIM GPS Timing Module. Price and technical details at the link:) > >http://www.semiconductorstore.com/cart/pc/viewPrd.asp?idproduct=41718 > >Thanks, > >Jon / KF5TFJ >===== >Jon, > >We have not tested that unit with the K3XREF. >Looking at the specs, it's uses a square wave (most use a sign) and the output is a little higher output then 0dBM which most units use. >I would recommended asking on our Elecraft reflector if anyone has used and tested it with the K3. > >Regards >Howard K6IA >===== >So, has anyone used the CW12-TIM with K3EXREF? >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:[hidden email] > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: K3EXREF and NavSync CW12-TIM GPS Module
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Small correction below.
On Wed, 08 Jan 2014 08:21:37 -0800, you wrote: >If Howard is correct on the output level, it's a little low for the >K3EXREF's input. From the manual: > Quote >Connect the external 10 MHz signal source to the K3 rear panel REF. >connector. The 10 MHz source should have a signal level between +4 dBm >and +16 dBm, nominal. For square wave sources, 2VDC to 3.3VDC peak is >optimum. If the source is a 5V logic level, use a 50-ohm resistor in >series with the input. Caution: To avoid damage to the K3EXREF, do not >exceed these levels. Unquote > <This paragraph is not in the K3EXREF manual; it's just my comment. -mz> >Many K3EXREF users have Trimble Thunderbolt units. These work quite >well and have an output level of about 12.5 dBm, sine wave. >Thunderbolt units can be acquired surplus for $40 - $100 and are >readily available on eBay, etc. I'd recommend you buy one of the >later models, because these have an integrated 12V-input power supply. > >73, >matt W6NIA > >On Wed, 8 Jan 2014 10:00:46 -0600, you wrote: > >>This is an inquiry I sent to Elecraft, along with their response: >> >>Ive been considering adding the K3XREF to my K3. Can you tell me if the device listed in this link is a suitable 10MHz source? (Re: Navsync CW12-TIM GPS Timing Module. Price and technical details at the link:) >> >>http://www.semiconductorstore.com/cart/pc/viewPrd.asp?idproduct=41718 >> >>Thanks, >> >>Jon / KF5TFJ >>===== >>Jon, >> >>We have not tested that unit with the K3XREF. >>Looking at the specs, it's uses a square wave (most use a sign) and the output is a little higher output then 0dBM which most units use. >>I would recommended asking on our Elecraft reflector if anyone has used and tested it with the K3. >> >>Regards >>Howard K6IA >>===== >>So, has anyone used the CW12-TIM with K3EXREF? >>______________________________________________________________ >>Elecraft mailing list >>Home: http://mailman.qth.net/mailman/listinfo/elecraft >>Help: http://mailman.qth.net/mmfaq.htm >>Post: mailto:[hidden email] >> >>This list hosted by: http://www.qsl.net >>Please help support this email list: http://www.qsl.net/donate.html >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:[hidden email] > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: K3EXREF and NavSync CW12-TIM GPS Module
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In reply to this post by KF5TFJ
I was one of the beta testers on the K3EXREF. I am using a surplus
OCXO bought for about $45 on e-bay. Its output was a distorted sinewave (appears to have strong second harmonic). I removed the harmonic by running the 10-MHz thru a DEMI model 10-4 distribution amp that uses 10-MHz bandpass filters on each of the four outputs (which are 10 dBm). The K3EXREF runs very nicely with this. Refer to: http://www.kl7uw.com/K3EXREF.htm 73, Ed - KL7UW http://www.kl7uw.com "Kits made by KL7UW" Dubus Mag business: [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by Matt Zilmer-3
Hi All
Just seen a smart idea at CES 2014, a micro power supply 65W wall plug style and dream one day to see a 12v/20A (240+W or so) wallplug switching PS eventually build-in my K3. Yeah I know filtering and harmonics could be an issue (there are good solutions this days) but when you have to travel a "vacation style" micro PS could save big $$ on flight. Still at home my 1st choice is a linear big and heavy PS to stay on the safe side. http://www.youtube.com/watch?v=eLQB67RqZsk vy 73 de VE3GNO Daniel ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Here's what I use for travel. Only thing I changed was the output plug to PowerPoles... http://www.gammaresearch.net/hps-1a.html 73 Jeff KB2M ----- Original Message ----- From: VE3GNO Daniel <[hidden email]> To: Matt Zilmer <[hidden email]>, Jon Noxon <[hidden email]>, [hidden email] Sent: Wed, 08 Jan 2014 18:08:35 -0000 (UTC) Subject: [Elecraft] CES2014 micro power supply Hi All Just seen a smart idea at CES 2014, a micro power supply 65W wall plug style and dream one day to see a 12v/20A (240+W or so) wallplug switching PS eventually build-in my K3. Yeah I know filtering and harmonics could be an issue (there are good solutions this days) but when you have to travel a "vacation style" micro PS could save big $$ on flight. Still at home my 1st choice is a linear big and heavy PS to stay on the safe side. http://www.youtube.com/watch?v=eLQB67RqZsk vy 73 de VE3GNO Daniel ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Here is what I use. 12.8 VDC 29A $45. http://www.lightobject.com/Electronics-C13.aspx
Mel, K6KBE On Wednesday, January 8, 2014 11:14 AM, "[hidden email]" <[hidden email]> wrote: Here's what I use for travel. Only thing I changed was the output plug to PowerPoles... http://www.gammaresearch.net/hps-1a.html 73 Jeff KB2M ----- Original Message ----- From: VE3GNO Daniel <[hidden email]> To: Matt Zilmer <[hidden email]>, Jon Noxon <[hidden email]>, [hidden email] Sent: Wed, 08 Jan 2014 18:08:35 -0000 (UTC) Subject: [Elecraft] CES2014 micro power supply Hi All Just seen a smart idea at CES 2014, a micro power supply 65W wall plug style and dream one day to see a 12v/20A (240+W or so) wallplug switching PS eventually build-in my K3. Yeah I know filtering and harmonics could be an issue (there are good solutions this days) but when you have to travel a "vacation style" micro PS could save big $$ on flight. Still at home my 1st choice is a linear big and heavy PS to stay on the safe side. http://www.youtube.com/watch?v=eLQB67RqZsk vy 73 de VE3GNO Daniel ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by VE3GNO Daniel
> Here's what I use for travel. Only thing I changed was the output plug to
> PowerPoles... > > http://www.gammaresearch.net/hps-1a.html > > 73 Jeff KB2M > Interesting... "Your radio uses power only 35% of the time when transmitting CW, and about 25% during normal Voice SSB operation." But a lot higher percentage if you run RTTY or some other digimodes. Or you have "a lot" of speech processing and play with contests! (They do an adapter from Molex to PP anyway for the DC side.) Like your contrymen say about automotive stuff. "There's no substitute for Cube's" if you want power. Take care peep's. There's no mention of CE, FCC or UL (safety) approvals, or if there is any over-voltage protection (for your expensive radio, and/or other DC powered kit.) I suspect too, that small fan might make an anoying noise. (If it shifts enough air to do any good.) 73. Dave G0WBX. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Well I've had my Gamma for maybe 5 years, used it with several brands of
transceivers, and don't do anything stupid like try to run RTTY, FM, or AM modes at full power, or run excessive speech processing. I do run PSK31 a lot when operating with it, but only at 30 watts or so. This is all common sense. I have never heard the fan, it is quiet. I don't have it here right now(it is at my summer home) but I think there is a CE or UL sticker on it, or both. I have experienced NO problems. Depending on your operating habits YMMV... 73 Jeff kb2m -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of [hidden email] Sent: Friday, January 10, 2014 5:00 AM To: [hidden email] Subject: Re: [Elecraft] CES2014 micro power supply > Here's what I use for travel. Only thing I changed was the output plug > to PowerPoles... > > http://www.gammaresearch.net/hps-1a.html > > 73 Jeff KB2M > Interesting... "Your radio uses power only 35% of the time when transmitting CW, and about 25% during normal Voice SSB operation." But a lot higher percentage if you run RTTY or some other digimodes. Or you have "a lot" of speech processing and play with contests! (They do an adapter from Molex to PP anyway for the DC side.) Like your contrymen say about automotive stuff. "There's no substitute for Cube's" if you want power. Take care peep's. There's no mention of CE, FCC or UL (safety) approvals, or if there is any over-voltage protection (for your expensive radio, and/or other DC powered kit.) I suspect too, that small fan might make an anoying noise. (If it shifts enough air to do any good.) 73. Dave G0WBX. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: CES2014 micro power supply
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no CE or UL on my Gamma...
input ( since it is a switcher ) is marked on back 85-264...\ I put powerpoles on the front on mine and a big sticker reminding me 30 watts rtty/psk it IS a 4 A switcher inside... bill At 10:30 AM 1/10/2014, Jeff Griffin wrote: >Well I've had my Gamma for maybe 5 years, used it with several brands of ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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