2-30 MHz Transmit?
Locked
 
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Can someone furnish the exact "unlocked" or MARS transmit frequency
specifications for the K2, KX3 and K3? I think some of these radios may have gaps - due to RF filtering, IF, etc. Also, what about the unlocked transmit specs for VHF in these radios? Thanks, Jay W6CJ ______________________________________________________________ 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 Message delivered to [hidden email] |
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Jay,
The K2 is ham bands only, but it will tune (and transmit) slightly outside the ham bands - how far depends on the particular K2. There is no way to "open it up" further. The K3 blocks transmit (and receive) in the region of the 1st IF at 8.215 kHz - I forget how wide the guard band really is. The CB band at 25MHz is also blocked. If you must operate well outside the ham bands, you may want to install the KBPF3 option because the stock bandpass filters are peaked in the ham bands and receive will fall off as you move further away from the ham band edges. The KX3 can be opened for transmit (except for the CB band) most anywhere in the RF spectrum. If you have a valid need to transmit outside the ham bands (MARS licensee or other), contact K3support to obtain the instructions. I do not know about the unlocked VHF spectrum. 73, Don W3FPR On 4/6/2015 12:37 PM, J wrote: > Can someone furnish the exact "unlocked" or MARS transmit frequency > specifications for the K2, KX3 and K3? > > > > I think some of these radios may have gaps - due to RF filtering, IF, etc. > > > > Also, what about the unlocked transmit specs for VHF in these radios? > > > ______________________________________________________________ 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 Message delivered to [hidden email] |
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In reply to this post by J
Hi Jay,
I use my older K3 and a newer one on MARS frequencies. The KX3 is used as a MARS ECOM / mobile unit with the KXPA100 amp. The K3 has a TX donut hole around the 8.2 MHz IF. I think TX is locked out from 7.5 to 9.0 MHz (if memory serves). The KX3 has no such restriction, being a Zero IF transceiver. Elecraft customer support can assist you with the unlock programs needed. You may have to supply your MARS credentials, but I'm not sure how that is handled today. It's been a while since I unlocked my radios here. Except for the K3's IF range, I've found no problems with TX and RX from around 2.8 MHz to 25 MHz. KBPF3 use is recommended though, so that you have enough gain between ham bands. Otherwise, the sensitivity falls off in between bands. Note: There is very little MARS / SHARES activity above 20 MHz. I'm also using the KX3's 2m module to work an above-and-below MARS VHF repeater split, plus the odd set of simplex frequencies NMCM has around 2m. Again, from memory, Elecraft specifies performance inside the ham bands. I don't believe there are any published specs for general coverage. I haven't found any problems with between-band operation - plenty of sensitivity and dynamic range, etc. 73! matt W6NIA / NNN0UET On Mon, 6 Apr 2015 09:37:12 -0700, you wrote: >Can someone furnish the exact "unlocked" or MARS transmit frequency >specifications for the K2, KX3 and K3? > > > >I think some of these radios may have gaps - due to RF filtering, IF, etc. > > > >Also, what about the unlocked transmit specs for VHF in these radios? > > > >Thanks, > > > >Jay > >W6CJ > >______________________________________________________________ >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 >Message delivered to [hidden email] -- "Always store beer in a dark place." -R. Heinlein ______________________________________________________________ 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 Message delivered to [hidden email] |
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Hello,
Just for me as a Kraut, what is MARS? Christian Von meinem iPad gesendet > Am 06.04.2015 um 19:04 schrieb Matt Zilmer <[hidden email]>: > > Hi Jay, > > I use my older K3 and a newer one on MARS frequencies. The KX3 is > used as a MARS ECOM / mobile unit with the KXPA100 amp. > > The K3 has a TX donut hole around the 8.2 MHz IF. I think TX is > locked out from 7.5 to 9.0 MHz (if memory serves). The KX3 has no > such restriction, being a Zero IF transceiver. > > Elecraft customer support can assist you with the unlock programs > needed. You may have to supply your MARS credentials, but I'm not > sure how that is handled today. It's been a while since I unlocked my > radios here. > > Except for the K3's IF range, I've found no problems with TX and RX > from around 2.8 MHz to 25 MHz. KBPF3 use is recommended though, so > that you have enough gain between ham bands. Otherwise, the > sensitivity falls off in between bands. Note: There is very little > MARS / SHARES activity above 20 MHz. > > I'm also using the KX3's 2m module to work an above-and-below MARS VHF > repeater split, plus the odd set of simplex frequencies NMCM has > around 2m. > > Again, from memory, Elecraft specifies performance inside the ham > bands. I don't believe there are any published specs for general > coverage. I haven't found any problems with between-band operation - > plenty of sensitivity and dynamic range, etc. > > 73! > matt W6NIA / NNN0UET > > > >> On Mon, 6 Apr 2015 09:37:12 -0700, you wrote: >> >> Can someone furnish the exact "unlocked" or MARS transmit frequency >> specifications for the K2, KX3 and K3? >> >> >> >> I think some of these radios may have gaps - due to RF filtering, IF, etc. >> >> >> >> Also, what about the unlocked transmit specs for VHF in these radios? >> >> >> >> Thanks, >> >> >> >> Jay >> >> W6CJ >> >> ______________________________________________________________ >> 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 >> Message delivered to [hidden email] > Matt Zilmer, W6NIA > -- > "Always store beer in a dark place." -R. Heinlein > > ______________________________________________________________ > 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 > Message delivered to [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 Message delivered to [hidden email] |
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A longer version of EME? No it stands for Military Amateur Radio Service.
Before fiber optics made overseas calling cheap most US overseas bases had a MARS station to facilitate phone patches to the dependents. Now they are mostly an emergency backup or auxiliary. 73 Fred, AE6QL -----Original Message----- From: Elecraft [mailto:[hidden email]] On Behalf Of web.de Sent: Tuesday, April 07, 2015 1:53 AM To: [hidden email] Cc: [hidden email] Subject: Re: [Elecraft] 2-30 MHz Transmit? Hello, Just for me as a Kraut, what is MARS? Christian Von meinem iPad gesendet > Am 06.04.2015 um 19:04 schrieb Matt Zilmer <[hidden email]>: > > Hi Jay, > > I use my older K3 and a newer one on MARS frequencies. The KX3 is > used as a MARS ECOM / mobile unit with the KXPA100 amp. > > The K3 has a TX donut hole around the 8.2 MHz IF. I think TX is > locked out from 7.5 to 9.0 MHz (if memory serves). The KX3 has no > such restriction, being a Zero IF transceiver. > > Elecraft customer support can assist you with the unlock programs > needed. You may have to supply your MARS credentials, but I'm not > sure how that is handled today. It's been a while since I unlocked my > radios here. > > Except for the K3's IF range, I've found no problems with TX and RX > from around 2.8 MHz to 25 MHz. KBPF3 use is recommended though, so > that you have enough gain between ham bands. Otherwise, the > sensitivity falls off in between bands. Note: There is very little > MARS / SHARES activity above 20 MHz. > > I'm also using the KX3's 2m module to work an above-and-below MARS VHF > repeater split, plus the odd set of simplex frequencies NMCM has > around 2m. > > Again, from memory, Elecraft specifies performance inside the ham > bands. I don't believe there are any published specs for general > coverage. I haven't found any problems with between-band operation - > plenty of sensitivity and dynamic range, etc. > > 73! > matt W6NIA / NNN0UET > > > >> On Mon, 6 Apr 2015 09:37:12 -0700, you wrote: >> >> Can someone furnish the exact "unlocked" or MARS transmit frequency >> specifications for the K2, KX3 and K3? >> >> >> >> I think some of these radios may have gaps - due to RF filtering, IF, >> >> >> >> Also, what about the unlocked transmit specs for VHF in these radios? >> >> >> >> Thanks, >> >> >> >> Jay >> >> W6CJ >> >> ______________________________________________________________ >> 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 Message delivered to >> [hidden email] > Matt Zilmer, W6NIA > -- > "Always store beer in a dark place." -R. Heinlein > > ______________________________________________________________ > 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 Message delivered to > [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 Message delivered to [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 Message delivered to [hidden email] |
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I think it's actually "Military Affiliate Radio System", but your
explaination is correct. If you look at the official emblems, it is spelled out, although the words "Amateur" or "Auxilliary" are also commonly interchanged for "Affiliate". (Another possibility is a connection with the Barsoomian Radio Society) 73, Charlie k3ICH ----- Original Message ----- From: "Fred Townsend" <[hidden email]> To: "'web.de'" <[hidden email]>; <[hidden email]> Cc: <[hidden email]> Sent: Tuesday, April 07, 2015 5:34 AM Subject: Re: [Elecraft] 2-30 MHz Transmit? >A longer version of EME? No it stands for Military Amateur Radio Service. > Before fiber optics made overseas calling cheap most US overseas bases had > a > MARS station to facilitate phone patches to the dependents. Now they are > mostly an emergency backup or auxiliary. > 73 > Fred, AE6QL > ______________________________________________________________ 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 Message delivered to [hidden email] |
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In reply to this post by web.de
Military Auxiliary Radio System.
73, matt W6NIA On Tue, 7 Apr 2015 10:53:26 +0200, you wrote: >Hello, > >Just for me as a Kraut, what is MARS? > >Christian > >Von meinem iPad gesendet > >> Am 06.04.2015 um 19:04 schrieb Matt Zilmer <[hidden email]>: >> >> Hi Jay, >> >> I use my older K3 and a newer one on MARS frequencies. The KX3 is >> used as a MARS ECOM / mobile unit with the KXPA100 amp. >> >> The K3 has a TX donut hole around the 8.2 MHz IF. I think TX is >> locked out from 7.5 to 9.0 MHz (if memory serves). The KX3 has no >> such restriction, being a Zero IF transceiver. >> >> Elecraft customer support can assist you with the unlock programs >> needed. You may have to supply your MARS credentials, but I'm not >> sure how that is handled today. It's been a while since I unlocked my >> radios here. >> >> Except for the K3's IF range, I've found no problems with TX and RX >> from around 2.8 MHz to 25 MHz. KBPF3 use is recommended though, so >> that you have enough gain between ham bands. Otherwise, the >> sensitivity falls off in between bands. Note: There is very little >> MARS / SHARES activity above 20 MHz. >> >> I'm also using the KX3's 2m module to work an above-and-below MARS VHF >> repeater split, plus the odd set of simplex frequencies NMCM has >> around 2m. >> >> Again, from memory, Elecraft specifies performance inside the ham >> bands. I don't believe there are any published specs for general >> coverage. I haven't found any problems with between-band operation - >> plenty of sensitivity and dynamic range, etc. >> >> 73! >> matt W6NIA / NNN0UET >> >> >> >>> On Mon, 6 Apr 2015 09:37:12 -0700, you wrote: >>> >>> Can someone furnish the exact "unlocked" or MARS transmit frequency >>> specifications for the K2, KX3 and K3? >>> >>> >>> >>> I think some of these radios may have gaps - due to RF filtering, IF, etc. >>> >>> >>> >>> Also, what about the unlocked transmit specs for VHF in these radios? >>> >>> >>> >>> Thanks, >>> >>> >>> >>> Jay >>> >>> W6CJ >>> >>> ______________________________________________________________ >>> 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 >>> Message delivered to [hidden email] >> Matt Zilmer, W6NIA >> -- >> "Always store beer in a dark place." -R. Heinlein >> >> ______________________________________________________________ >> 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 >> Message delivered to [hidden email] -- "Always store beer in a dark place." -R. Heinlein ______________________________________________________________ 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 Message delivered to [hidden email] |
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Wikipedia has a pretty good explanation on the history and current mission
of the MARS services: http://en.wikipedia.org/wiki/Military_Auxiliary_Radio_System On Tue, Apr 7, 2015 at 7:05 AM, Matt Zilmer <[hidden email]> wrote: > Military Auxiliary Radio System. > > 73, > matt W6NIA > > > On Tue, 7 Apr 2015 10:53:26 +0200, you wrote: > > >Hello, > > > >Just for me as a Kraut, what is MARS? > > > >Christian > > > >Von meinem iPad gesendet > > > >> Am 06.04.2015 um 19:04 schrieb Matt Zilmer <[hidden email]>: > >> > >> Hi Jay, > >> > >> I use my older K3 and a newer one on MARS frequencies. The KX3 is > >> used as a MARS ECOM / mobile unit with the KXPA100 amp. > >> > >> The K3 has a TX donut hole around the 8.2 MHz IF. I think TX is > >> locked out from 7.5 to 9.0 MHz (if memory serves). The KX3 has no > >> such restriction, being a Zero IF transceiver. > >> > >> Elecraft customer support can assist you with the unlock programs > >> needed. You may have to supply your MARS credentials, but I'm not > >> sure how that is handled today. It's been a while since I unlocked my > >> radios here. > >> > >> Except for the K3's IF range, I've found no problems with TX and RX > >> from around 2.8 MHz to 25 MHz. KBPF3 use is recommended though, so > >> that you have enough gain between ham bands. Otherwise, the > >> sensitivity falls off in between bands. Note: There is very little > >> MARS / SHARES activity above 20 MHz. > >> > >> I'm also using the KX3's 2m module to work an above-and-below MARS VHF > >> repeater split, plus the odd set of simplex frequencies NMCM has > >> around 2m. > >> > >> Again, from memory, Elecraft specifies performance inside the ham > >> bands. I don't believe there are any published specs for general > >> coverage. I haven't found any problems with between-band operation - > >> plenty of sensitivity and dynamic range, etc. > >> > >> 73! > >> matt W6NIA / NNN0UET > >> > >> > >> > >>> On Mon, 6 Apr 2015 09:37:12 -0700, you wrote: > >>> > >>> Can someone furnish the exact "unlocked" or MARS transmit frequency > >>> specifications for the K2, KX3 and K3? > >>> > >>> > >>> > >>> I think some of these radios may have gaps - due to RF filtering, IF, > etc. > >>> > >>> > >>> > >>> Also, what about the unlocked transmit specs for VHF in these radios? > >>> > >>> > >>> > >>> Thanks, > >>> > >>> > >>> > >>> Jay > >>> > >>> W6CJ > >>> > >>> ______________________________________________________________ > >>> 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 > >>> Message delivered to [hidden email] > >> Matt Zilmer, W6NIA > >> -- > >> "Always store beer in a dark place." -R. Heinlein > >> > >> ______________________________________________________________ > >> 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 > >> Message delivered to [hidden email] > Matt Zilmer, W6NIA > -- > "Always store beer in a dark place." -R. Heinlein > > ______________________________________________________________ > 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 > Message delivered to [hidden email] > -- Owner, worldwidedx.com AE6LX, Amateur Radio NNN0ITA, Navy MARS NNN0GAF FOUR, Southern CA Director Assistant for Training, Navy MARS ______________________________________________________________ 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 Message delivered to [hidden email] |
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