Re: [Elecraft] H mode mixer
As I recall Jim, he championed the "220, Use it or Lose It" campaign. There was a lot of commercial interest in the band in the 70s, probably the same is true now as well. Folks had strong emotions, one way or the other, when it came to Wayne. 73, Julius n2wn --- [EMAIL PROTECTED] wrote: > In a message dated 5/14/07 8:43:46 AM Eastern > Daylight Time, > [EMAIL PROTECTED] writes: > > > > We do owe Wayne gratitude for keeping 220 mHz > > available for ham use. > > > > How did he do that? > > 73 de Jim, N2EY > > > ** > See what's free at > http://www.aol.com. > ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] H mode mixer
In a message dated 5/14/07 8:43:46 AM Eastern Daylight Time, [EMAIL PROTECTED] writes: > We do owe Wayne gratitude for keeping 220 mHz > available for ham use. > How did he do that? 73 de Jim, N2EY ** See what's free at http://www.aol.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] H mode mixer
It would depend on your interests. I'd probably stick with QST because it covers more items of interest for me. These being ARRL sponsored contests, national events including legislation/regulation and regional activities. One could argue strongly for CQ magazine for the same reasons. If my bend was more technical than it is and I wanted to maintain contact with the entire spectrum of Amateur Radio activities, I'd be more inclined to go with RadCom. I already get NCJ, CQ and QEX, so have the US activities pretty well covered. There are a fair number of eZines from various contest groups, local clubs, QRP groups on the web. Still, I think RadCom would be a valuable addition, particularly if you're a serious Amateur ;o) It may be the only other English language radio publication, which would make a difference for many. 73, Julius n2wn --- Sam Morgan <[EMAIL PROTECTED]> wrote: > J F wrote: > > Actually Geoff, the ARRL has a decent deal going > on > > for RSGB membership: > > > > RadCom Magazine (RSGB) > > -- Subscriptions are now available on an exclusive > > deal from ARRL! > > any comments on which one would be your pick > if you could only read one or the other? > QST or RadCom > -- > GB & 73's > KA5OAI > Sam Morgan > ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] H mode mixer
J F wrote: Actually Geoff, the ARRL has a decent deal going on for RSGB membership: RadCom Magazine (RSGB) -- Subscriptions are now available on an exclusive deal from ARRL! any comments on which one would be your pick if you could only read one or the other? QST or RadCom -- GB & 73's KA5OAI Sam Morgan ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] H mode mixer
Actually Geoff, the ARRL has a decent deal going on for RSGB membership: RadCom Magazine (RSGB) -- Subscriptions are now available on an exclusive deal from ARRL! RadCom is the UK's biggest and best radio magazine. It is published by the Radio Society of Great Britain (RSGB). Enjoy 15 monthly issues for the price of 12 (new members only). And, Airmail Delivery! Subscribers enjoy: # Technical Topics # Short Wave Listening # Construction Articles Galore # IOTA # HF # QRP # WWW and many, many more features! #RSGB -- $79.00 Certainly worth considering... 73, Julius n2wn --- Geoffrey Mackenzie-Kennedy <[EMAIL PROTECTED]> wrote: > If you became a member of the RSGB you would get > Radcom every month :-) > > 73, > Geoff > GM4ESD > > J F <[EMAIL PROTECTED]> wrote: > > > We always had access to all of the US magazines. > Wish > > it were easier to pick up a copy of none US radio > > magazines here (then and now) > > > > 73, > > Julius > > n2wn > > > ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] H mode mixer
If you became a member of the RSGB you would get Radcom every month :-) 73, Geoff GM4ESD J F <[EMAIL PROTECTED]> wrote: We always had access to all of the US magazines. Wish it were easier to pick up a copy of none US radio magazines here (then and now) 73, Julius n2wn ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] H mode mixer
In some ways, 73 represented a different side of Ham Radio. We do owe Wayne gratitude for keeping 220 mHz available for ham use. We always had access to all of the US magazines. Wish it were easier to pick up a copy of none US radio magazines here (then and now) 73, Julius n2wn --- Brian Lloyd <[EMAIL PROTECTED]> wrote: > > You are right on both. I have missed HamRadio .. > it > > died when it was sold to 73 ... a no technology > > booklet... > > Hey! I resent that! I wrote the "Packet Talk" column > for 73 around > 1988/1989. I tried to ensure that it had some useful > technical content! > > (Just kidding. No offense taken. :-) > > 73 de Brian, WB6RQN > Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT com > > > ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] H mode mixer
Hi Brian, thanks for your message. --- Brian Lloyd <[EMAIL PROTECTED]> wrote: > > You are right on both. I have missed HamRadio .. > it > > died when it was sold to 73 ... a no technology > > booklet... > > Hey! I resent that! I wrote the "Packet Talk" column > for 73 around > 1988/1989. I tried to ensure that it had some useful > technical content! > > (Just kidding. No offense taken. :-) I am sorry for my comment and glad you did a good work on the Packet Talk column... I did not mean to offend and please excuse me even you are kidding too. During my travels to US from 98 to 2004 (at least 4 times a year, I was always looking for 73 Mag ... when I was finding it there was not much of interest for me. Sorry for the editor(s). 73 Gian I7SWX > > 73 de Brian, WB6RQN > Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT com > > > Give spam the boot. Take control with tough spam protection in the all-new Yahoo! Mail Beta. http://advision.webevents.yahoo.com/mailbeta/newmail_html.html ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] H mode mixer
Although I have not myself had any serious "hands on" experience with the Tayloe mixer, from private correspondence exchanged several years ago I understand that the Tayloe while being a good performer in terms of IIP3 is not as "good" as the H-Mode. I have the comparative data in France along with most of my design "stuff". Not too long ago the H-Mode was described by a qualified individual as 'still being at the top of the heap'. 73, Geoff GM4ESD Brian Lloyd <[EMAIL PROTECTED]> wrote On Friday, May 11, 2007 10:37 PM Subject: Re: [Elecraft] H mode mixer And just to confuse things even more, what about the Tayloe mixer? 73 de Brian, WB6RQN ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] H mode mixer
You are right on both. I have missed HamRadio .. it died when it was sold to 73 ... a no technology booklet... Hey! I resent that! I wrote the "Packet Talk" column for 73 around 1988/1989. I tried to ensure that it had some useful technical content! (Just kidding. No offense taken. :-) 73 de Brian, WB6RQN Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] H mode mixer
On May 11, 2007, at 5:37 AM, J F wrote: Geoff & Gian, To play devil's advocate (I'm decent in this role), if the H-mode mixers is as simple and as effective as you both suggest. Why hasn't it been more widely adopted? And just to confuse things even more, what about the Tayloe mixer? 73 de Brian, WB6RQN Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] H mode mixer
Hi Julius, --- J F <[EMAIL PROTECTED]> wrote: > Hi Gian, > > > > The H-Mode Mixer (3 transformers) using both > SD5000 > > and FST3125, referred to the TRIAD (W7AAZ, W4ZCB > and > > G3SBI) is reported in the ARRL Book EMRF Design. > > Perhaps I missed these, been reading more about > antennas than Rx design, particularly if it was SDR. > Mea Culpa here... You should not feel bad ... there are many people that missed articles ...hi You can read it in another time ... > > > Intellectual rights on the H-Mode Mixer belong to > > Colin Horrabin, G3SBI, and manufacturers do not > like > > to pay some extra or or (Euro) ... > > or > > maybe they try not to use someone else "brain > > products" ... I guess ... hi. > > I know how this goes, still, if the need and demand > was there, some fee seems better than not having a > good product. Still, maybe it's because many > equipment > manufacturers, like many hams, are adverse to change > at times... It is not clear ... the design of a commercial Ham equipment is finalized by the accountants and not the engineers. Removing 50$ of components reduces the product of 200$ ... for 1000 units they saved or gained 200.000$ (I believe this second solution maybe the right one ... hi) > > > > The H-Mode Mixer has been used in two important > > European Designs, as already mentioned, CDG2000 > > (G3SBI > > part of the team) and Pic-A-Star or STAR by G3XJP. > > In > > both designs you will see the "presence" of Bill, > > W7AAZ and Harold, W4ZCB, particularly in the STAR. > > Many European homebrewer designs have included the > > H-Mode mixer in both 3T and 2T configurations. A > > couple of projects are also been undertaken in > > JA-land > > (see JA9TTT webpage). > > Also several mods to commercial equipment have > been > > undertaken mainly in Europe and a couple in > W-land. > > When I published the I7SWX 2T H-Moder Mixer > > configuration, LZ1OV produced the PCBs and if I do > > recall over 200 pieces were sold all over Europe > and > > some in W-land and JA. > > I am aware of the STAR (had forgot about it) As I > recall there were some personality issues that may > have stunted growth or wider adoption. I could be > wrong... Yes... some issue but not "personality". The issue are associated to the PCBs that the STAR homebrewer has to make himself. I suggested to G3XJP to arrange for a STAR PCBs kit... I have a friend that could manage that (like done for the N2PK-VNA original kit). G3XJP was clear on this point and then I understood why he was and still contrary The STAR project is not for everyone that may know how to keep a soldering iron on his hand. You need knowledge of hdw and sw ... imagine 500 kit are sold out some of the buyers will never complete the STAR ... some will make it and have it running as expected .. some others may do some wrong assy ... Star will not work ... there would be two reactions from these users: 1) An unnecessary overload for G3XJP to help fixing the problems ... but not due to the project, and he would be right to refuse support 2) Upset people talking badly about STAR Project, his designer (G3XJP), who would haved produced the PCB kit and who else... I agreed on Peter's decision of no commercially produced PCB. If aq group of hams would like to make a commercila like PCB kit for each member I believe there would not bee any problem if there would be a group support and in case of genuine problems only one of the groupo wwould interface with G3XJP ... maybe I am wrong on this too. > > > > Why the H-Mode Mixer is not so well known in > W-Land? > > this is a question people may ask --- maybe is due > > to > > the fact that QST is OK to publish NE602 projects > > and > > less available to just a little more complex ones. > > An article on the H-Mode Mixer was published in > QEX > > by > > IK4AUY ... but I am sure it did not "wake-up" the > > interest in too many readers () > > Actually, I've read IK4AUY's article(s) with much > interest. QEX is not as widely read as say QST or > CQ. Yes, this is the main problem. Only fiddlers would extend their membership to receive QEX > These days those types of articles are considered > too > specialized for the mainstream. We could use a > publication like "Ham Radio" again. You are right on both. I have missed HamRadio .. it died when it was sold to 73 ... a no technology booklet... It is rare to > see > a RadCom at any but the large hamfests. That seems > to > keep technical and non-technical in the same rag, > versus the segmenting that is so popular here. RadCom for me is the best Ham magazine. There are inetersting articles although some times RSGB has similar problems as other Radio Societies... One of the best column in RadCom is Technical Topiocs manage by Pat Hawker, G3VA, where you have a world wide share of knowledge. I would suggest people should ask their own Radio Club to pay for a membership to RSGB and all the members would bene
Re: [Elecraft] H mode mixer
Hi Julius, J F <[EMAIL PROTECTED]> wrote: It seems strange to me that it lingers more on the fringes than moving into the mainstream. If it's been around for 15 or more years, one would think something could have been negotiated regarding any intellectual rights. I think that it has, but not into the amateur mainstream. Will reply to your other comments off list, this is 'Off Topic'!! 73 Geoff GM4ESD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] H mode mixer
Hi Gian, > The H-Mode Mixer (3 transformers) using both SD5000 > and FST3125, referred to the TRIAD (W7AAZ, W4ZCB and > G3SBI) is reported in the ARRL Book EMRF Design. Perhaps I missed these, been reading more about antennas than Rx design, particularly if it was SDR. Mea Culpa here... > Intellectual rights on the H-Mode Mixer belong to > Colin Horrabin, G3SBI, and manufacturers do not like > to pay some extra or or (Euro) ... > or > maybe they try not to use someone else "brain > products" ... I guess ... hi. I know how this goes, still, if the need and demand was there, some fee seems better than not having a good product. Still, maybe it's because many equipment manufacturers, like many hams, are adverse to change at times... > > The H-Mode Mixer has been used in two important > European Designs, as already mentioned, CDG2000 > (G3SBI > part of the team) and Pic-A-Star or STAR by G3XJP. > In > both designs you will see the "presence" of Bill, > W7AAZ and Harold, W4ZCB, particularly in the STAR. > Many European homebrewer designs have included the > H-Mode mixer in both 3T and 2T configurations. A > couple of projects are also been undertaken in > JA-land > (see JA9TTT webpage). > Also several mods to commercial equipment have been > undertaken mainly in Europe and a couple in W-land. > When I published the I7SWX 2T H-Moder Mixer > configuration, LZ1OV produced the PCBs and if I do > recall over 200 pieces were sold all over Europe and > some in W-land and JA. I am aware of the STAR (had forgot about it) As I recall there were some personality issues that may have stunted growth or wider adoption. I could be wrong... > > Why the H-Mode Mixer is not so well known in W-Land? > this is a question people may ask --- maybe is due > to > the fact that QST is OK to publish NE602 projects > and > less available to just a little more complex ones. > An article on the H-Mode Mixer was published in QEX > by > IK4AUY ... but I am sure it did not "wake-up" the > interest in too many readers () Actually, I've read IK4AUY's article(s) with much interest. QEX is not as widely read as say QST or CQ. These days those types of articles are considered too specialized for the mainstream. We could use a publication like "Ham Radio" again. It is rare to see a RadCom at any but the large hamfests. That seems to keep technical and non-technical in the same rag, versus the segmenting that is so popular here. I might consider modifying one of my K2s (assuming I don't sell one off for the K3!). It will be interesting to see how this morphs. H-mode and tinkering forever ;o) Ciao bello! Julius n2wn ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] H mode mixer
Hi Geoff, It seems strange to me that it lingers more on the fringes than moving into the mainstream. If it's been around for 15 or more years, one would think something could have been negotiated regarding any intellectual rights. It certainly sounds interesting based on what I've read. 'Twould be interesting to see it implemented for more of a mass market... Hope you're doing well in loverly France... Cheers, Julius n2wn --- Geoffrey Mackenzie-Kennedy <[EMAIL PROTECTED]> wrote: > Hi Julius, > > It might have something to do with Intellectual > Title, but not being well > versed in such matters I could well be wrong. I have > read very recently that > the H-Mode is being used in a new receiver for > military use, and I know that > Rhode & Schwarz use a very similar mixer in one of > their "Professional" > receivers designed during the mid or late 1990s - I > would have to look up > the model. Perhaps the differences in the R&S mixer > are sufficient to > prevent legal problems. I have asked myself the same > question as yours > because the original H-Mode design appeared at least > 15 years ago and has > been "maturing" ever since, and without any doubt is > a high class performer. > > In the European amateur press the H-Mode has > received good coverage which > includes the publication of rceiver designs in which > the mixer is used. The > ARRL Hanbook 2001 includes a description of the > "Triad" receiver, a relative > of the receiver in the CDG2000, the latter was > offered as a kit if memory > serves me right. > > 73, > Geoff > GM4ESD > > > Julius N2WN wrote: > > > > Geoff & Gian, > > > > To play devil's advocate (I'm decent in this > role), if > > the H-mode mixers is as simple and as effective as > you > > both suggest. Why hasn't it been more widely > adopted? > > > > For the most part, I've seen a couple mixers > boards > > and mostly references to homebrew building, but > > nothing in the way of kits or commercially offered > > radios. > > > > Considering how difficult the 40M situation is in > > Europe, and how large the ham population is, > certainly > > one would think that someone would have championed > the > > technology by now... > > > > Any thoughts on this? > > > > Cheers, > > > > Julius > > n2wn > > > ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] H mode mixer
Hi Julius and Geoff and all. Thanks again for your notes. I hope to be clear on all of them. I will reply to both Geoff and Julius notes and these will match Geoff comments/questions (I hope). --- Geoffrey Mackenzie-Kennedy <[EMAIL PROTECTED]> wrote: > Hi Julius, > > It might have something to do with Intellectual > Title, but not being well > versed in such matters I could well be wrong. I have > read very recently that > the H-Mode is being used in a new receiver for > military use, and I know that > Rhode & Schwarz use a very similar mixer in one of > their "Professional" > receivers designed during the mid or late 1990s - I > would have to look up > the model. Perhaps the differences in the R&S mixer > are sufficient to > prevent legal problems. NO, that is not an H-Mode Mixer althought it was a simple switched single balanced demodulator using CD4066. > I have asked myself the same > question as yours > because the original H-Mode design appeared at least > 15 years ago and has > been "maturing" ever since, and without any doubt is > a high class performer. > > In the European amateur press the H-Mode has > received good coverage which > includes the publication of rceiver designs in which > the mixer is used. The > ARRL Hanbook 2001 includes a description of the > "Triad" receiver, a relative > of the receiver in the CDG2000, the latter was > offered as a kit if memory > serves me right. The H-Mode Mixer (3 transformers) using both SD5000 and FST3125, referred to the TRIAD (W7AAZ, W4ZCB and G3SBI) is reported in the ARRL Book EMRF Design. > > 73, > Geoff > GM4ESD > > > Julius N2WN wrote: > > > > Geoff & Gian, > > > > To play devil's advocate (I'm decent in this > role), if > > the H-mode mixers is as simple and as effective as > you > > both suggest. Why hasn't it been more widely > adopted? Good to know you are an "advocate" ... I may have to use your services if some friends may blow-up their equipments when volunteering on Mixers mods...hi The answer maybe simple... see below > > For the most part, I've seen a couple mixers > boards > > and mostly references to homebrew building, but > > nothing in the way of kits or commercially offered > > radios. > > > > Considering how difficult the 40M situation is in > > Europe, and how large the ham population is, > certainly > > one would think that someone would have championed > the > > technology by now... > > > > Any thoughts on this? Intellectual rights on the H-Mode Mixer belong to Colin Horrabin, G3SBI, and manufacturers do not like to pay some extra or or (Euro) ... or maybe they try not to use someone else "brain products" ... I guess ... hi. The H-Mode Mixer has been used in two important European Designs, as already mentioned, CDG2000 (G3SBI part of the team) and Pic-A-Star or STAR by G3XJP. In both designs you will see the "presence" of Bill, W7AAZ and Harold, W4ZCB, particularly in the STAR. Many European homebrewer designs have included the H-Mode mixer in both 3T and 2T configurations. A couple of projects are also been undertaken in JA-land (see JA9TTT webpage). Also several mods to commercial equipment have been undertaken mainly in Europe and a couple in W-land. When I published the I7SWX 2T H-Moder Mixer configuration, LZ1OV produced the PCBs and if I do recall over 200 pieces were sold all over Europe and some in W-land and JA. Why the H-Mode Mixer is not so well known in W-Land? this is a question people may ask --- maybe is due to the fact that QST is OK to publish NE602 projects and less available to just a little more complex ones. An article on the H-Mode Mixer was published in QEX by IK4AUY ... but I am sure it did not "wake-up" the interest in too many readers () Have a nice weekend and up with the H-Mode Mixer ... hi 73 Gian I7SWX > > > > Cheers, > > > > Julius > > n2wn > > > Ready for the edge of your seat? Check out tonight's top picks on Yahoo! TV. http://tv.yahoo.com/ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] H mode mixer
Hi Julius, It might have something to do with Intellectual Title, but not being well versed in such matters I could well be wrong. I have read very recently that the H-Mode is being used in a new receiver for military use, and I know that Rhode & Schwarz use a very similar mixer in one of their "Professional" receivers designed during the mid or late 1990s - I would have to look up the model. Perhaps the differences in the R&S mixer are sufficient to prevent legal problems. I have asked myself the same question as yours because the original H-Mode design appeared at least 15 years ago and has been "maturing" ever since, and without any doubt is a high class performer. In the European amateur press the H-Mode has received good coverage which includes the publication of rceiver designs in which the mixer is used. The ARRL Hanbook 2001 includes a description of the "Triad" receiver, a relative of the receiver in the CDG2000, the latter was offered as a kit if memory serves me right. 73, Geoff GM4ESD Julius N2WN wrote: Geoff & Gian, To play devil's advocate (I'm decent in this role), if the H-mode mixers is as simple and as effective as you both suggest. Why hasn't it been more widely adopted? For the most part, I've seen a couple mixers boards and mostly references to homebrew building, but nothing in the way of kits or commercially offered radios. Considering how difficult the 40M situation is in Europe, and how large the ham population is, certainly one would think that someone would have championed the technology by now... Any thoughts on this? Cheers, Julius n2wn ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] H mode mixer
Geoff & Gian, To play devil's advocate (I'm decent in this role), if the H-mode mixers is as simple and as effective as you both suggest. Why hasn't it been more widely adopted? For the most part, I've seen a couple mixers boards and mostly references to homebrew building, but nothing in the way of kits or commercially offered radios. Considering how difficult the 40M situation is in Europe, and how large the ham population is, certainly one would think that someone would have championed the technology by now... Any thoughts on this? Cheers, Julius n2wn ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
