[Elecraft] Re: Elecraft Digest, Vol 30, Issue 5 New Transverters
Yes, I meant transverters from Elecraft!!
While other tranverters (from a diversity of companies) are now offered even
up approaching the millimeter wavelength bands, no one offers a nice neat
commonality of an "IF" radio package, with a NO BAND GAP for band set-up for
all
of our 26 bands.
While I would not expect Elecraft {or any other manufacturer} to take up
this mantel in one swell foop, it would be quite an incentive to buy Elecraft!
A
902 MHz band transverter would of course be the hot ticket for this point in
time, but other bands might be added in a timely manner, and perhaps even be
easier as the SHF bands were approached. Frequency stability would be the
watch-word at these shorter wavelengths, so a somewhat different scheme might
be
addressed up above say 2.3 GHz.
73! de John WA6BFH DM15ej
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[Elecraft] Re: Elecraft Digest, Vol 30, Issue 4 -- New Transverters
Is there any company interest in further extending the model line of Elecraft transverters into the higher UHF and SHF regions? ___ 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] Re: Elecraft Digest, Vol 27, Issue 17 Concerning 10 Meter Openings
These are Sporadic E-layer skip. This is not unusual at all at this time of year. 50 MHz is also open quite often by this same mechanism. Follow the "MUF" by listening to beacons, Muzak broadcast in the 48 MHz region, or 28.885 MHz for announcements. The 6 Meter Band web reflectors are also good sources of what Mother Nature is up to! ___ 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] Re: Elecraft Digest, Vol 20, Issue 24 Under Eve Loop vs. Verical Omni
It certainly sounds as if your more recent plans represent a rather different vector of concept, than those presented by your near vertical incident 3/100ths wavelength high loop. I think that if you pick a DX band, say 20, 17, or 10 Meters, and make one or more ¼ wavelength whip antennas from copper tubing (16.5 feet at 20 Meters) you will find that the antenna will be very efficient, and soon disappear as the copper tarnishes! ___ 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] Re: Elecraft Digest, Vol 19, Issue 19 -- Transverter Portable (satellite) Use
As far as satellite use, I think your question has been answered, although
perhaps, not satisfyingly so! This is a valid point for R&D.
I am personally happy to see the progression of such transverters! I hope to
as soon {as economically feasible} see transverters for 1.2, 2.3, 3.2, 5.6
GHz etc, etc. Oh yea, 902 MHz too!
73! de John
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[Elecraft] Re: Elecraft Digest, Vol 18, Issue 7 Low Angle Radiation Pattern Antennas
Your thought for the broadside/endfire array sounds like a good idea! On the other hand, I am always amazed at the amount of credence that is given to antenna modeling programs. Unless you know all of the factors and conditions of the surrounding area and environment of the antenna, these programs simply don’t work. Even at the relatively short wavelength of 20 Meters, what conductive, resistive, and capacitive objects will be within ¼ wavelength. You will have your house and outbuildings, other folks nearby homes and buildings, probably surrounding wires or plumbing within the house etc. Antennas for the UHF bands often present anomalies that are seen on otherwise barren test ranges. So if these things occur at a wavelength of 1 Meter, what do you think the environment looks like at 10 or 20 Meter wavelength? I’m sure that your new location is not so far out in the boonies that you will find it impossible to engineer your station to be able to communicate on 20 Meters etc. A good sensitive and selective receiver, along with a transmitter of adequate power, and your best antenna design ideas for your situation ought to work Ok! 73! de John ___ 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] Re: Elecraft Digest, Vol 17, Issue 17 -- New Elecraft Transverters
Subject: Re: [Elecraft] Future Elecraft transverters Michael, what is your perspective? What have you built, and where do you want to go? Most Hams that I encounter these days seem quite happy to pretty much stay on 20 Meters or a few other HF bands. Not many seem to look at the RF spectrum at large. 73, and my truly best thoughts and wishes! John ___ 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] Re: Elecraft Digest, Vol 17, Issue 9 -- iCW and Data-Light Savings Time
Guys, why don’t we please just keep THIS REFLECTOR oriented to Elecraft products and discussion! ___ 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] Re: Elecraft Digest, Vol 17, Issue 4 On the iCW Debate
I was not going to comment on this issue on such a forum, but the last most recent question and similar that I have seen on other Ham radio web forums prompts me to. We should be more concerned with the technical standards, conceptual knowledge of Ham’s on matters of electronics and radio physics, and not at all about a motor-memory skill. As a matter of choice iCW is fine for those that enjoy it, or might use it in light of its ability to provide as high as a 16 dB signal advantage over some other modes. That is how I use it, and when I do am comfortable between 16 to about 23 words per minute. We should be innovators of technology, which is our history and charter. Read FCC 97.1, particularly parts B, C, D. Worry less about iCW, it will survive on its own. This all is a matter of character and conscience! ___ 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] Re: Elecraft Digest, Vol 16, Issue 31 -- Toroid Use and History
What is the theory, or greater breadth of physics about toroid transformers? When did they come about, and what was the logic in replacing “C” or “E” frames (for non-RF applications). I had an old Uti-Com Communications radio that used a toroid switcher, and many other aspects of the radio were of quite modern design for its time frame. It even used a strip-line of 6360’s as buffer/multipliers, one as the driver, and two as the final. I saw a transformer design once for an “intrinsically safe” isolator for “DC ” analog lines, and the toroids used in this “phased switcher/rectifier” were covered with ferrite covers. I also seem to remember that design in the Western Electric 247B tone decoder. ___ 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] Re: Elecraft Digest, Vol 14, Issue 26 -- Future "XV" Transverters
Yes I too would like to see a 432 MHz transverter! Then, after some reasonable time hence, a 1.2 and 10 GHz transverter! 73! de John ___ 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] Re: Elecraft Digest, Vol 14, Issue 24 70 cm and Higher Transverters
I asked this question (sort of) a few months ago. I was told that the market was not yet supporting such development -- yet! Well, I guess that I can understand that but, I still think that having a K2 along with all transverters from VHF to blue light would be really cool! The ultimate -- build it yourself station! DC up through SHF right? ___ 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] Re: Elecraft Digest, Vol 14, Issue 19 --- S-meter & S-units
One very important consideration of the use of “S-meters”, and “S-units” is remembering that signals are heard as a “Square Law Function” Every time you double or lengthen the communications path by twice the distance, the signal has fallen to one-fourth, or a 6 dB change! It is good to know how many dB per S-unit your receiver‘s meter indicates. This will probably not be a linear consideration -- and don’t believe the old wives tale about 6 dB’s per S-unit. It is the rare radio indeed where that is true! Even better than using “S-units”, give other stations reports in (ACCURATE) dBm! You will need the use of a calibrated signal generator to assess your receiver. ___ 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] Re: Elecraft Digest, Vol 14, Issue 10 -- Dummy Loads
I have never understood “the thinking” with many Ham’s when the discussion of Dummy Loads comes up. Some Ham’s will tell you, the minute they hear you tune up on a frequency that you just made a QRL inquiry on, “GET A DUMMY LOAD, WHAT ARE YOU TUNING UP ON THE AIR FOR”! Well, what if my antenna represents several hundred Ohms on one wavelength, and only several Ohms on another? I have a Bird Model 43 Wattmeter, and a Bird Dummy Load. From a “DC” perspective, it measures 50.0 Ohms. From and “AC” stand point it also measures 50.0 Ohms from 1.8 MHz to 902 MHz. It has very little error even at 1300 MHz. That is a good thing, because I depend upon it for real work, like assessing line losses etc! ___ 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] Re: Elecraft Digest, Vol 14, Issue 3 -- Transverter Sequencer
I am working on a keying scheme/sequencer that will work with several different model radios, and also function to safely provide excitation drive and over-drive protection. It is not oriented toward the Elecraft radios but, I am keeping them in mind as well. Let me know if you don’t find a more specific answer! ___ 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] Re: Elecraft Digest, Vol 13, Issue 30 On 70 cm Transverter Thought
PA0V, I'm sorry but, I did not understand your transverter thought or question. Could you elaborate? ___ 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] Re: Elecraft Digest, Vol 13, Issue 27 Balanced Automatic Tuners
Balanced Line Tuners
I don’t think you really want an Automatic tuner from Elecraft -- unless
they perhaps decide to venture into a new nitch in terms of a superb KW tuner
that works well with their and other radios.
First the reason that I say KW TransMatch is that you have to think in terms
of at least 100 Watt power levels of the K2100 and most other transmitters
of our day. If you are going to tune out what may well be a 10:1 or even
greater reactance at 100 Watts, that could be thousands of volts. The tuner
design
must accommodate this.
I would welcome seeing Elecraft or any manufacturer produce a software
driven ‘truly balanced tuner’. Nothing like this now exists on the market.
There
are and have been some such unbalanced tuners that will match an antenna in
the middle hundreds of Ohms. Even these won’t go beyond 600 or 800 Ohms, and
that is simply not enough for a well engineered station.
A software {or firmware} driven TransMatch that would tune from about one
half Ohm, to about 2000 Ohms, and handle the reactive voltages that may be
imposed at considerably higher power levels would be quite intriguing!
73! de John WA6BFH
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[Elecraft] Re: Elecraft Digest, Vol 13, Issue 22 -- Denatured Alcohol
Good thoughts Jerry! Be careful guys! ___ 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] Re: Elecraft Digest, Vol 13, Issue 7 Swing Arm Magnifiers & Benches
Since I also work on commercial FM radios (I own 3 repeaters) my Tech Bench
is built upon those shelf units that you find in home discount stores etc.
I have two shelf units on either side {and perpendicular} of my work area,
and they support my main work area shelf. My work surface area is about 5 feet
wide by 4 feet deep. I have enough room for my scope, signal generators
(General Radio) and Service Monitor to live on the adjacent shelves, as well
as
all my tools and stuff.
The rest of the room contains an otherwise retired computer to write
articles on, and also stereo equipment -- so that I don't go too crazy!
Try it! I live in that room! de John
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[Elecraft] Re: Elecraft Digest, Vol 13, Issue 5 ---- SWING ARM MAGNIFIERS
Be cautious with the “Swing Arm Magnifiers” (or even visor magnifiers)! I build a lot of proto-types, so I am not only soldering, but also doing a board layout (as well as possible) at the same time (on the fly). This makes for a lot of concentration and ‘focus’ (HiHi)! As my eyesight gets poorer (and older -- life begins at 40 my ass!) I find that the instantaneous puff of rosin smoke at each solder pad connection makes my eyes instantaneously re-focus. This repeated and magnified change of eye focus can give you some awful and whopping head aches! I have best mitigated this problem by controlling the speed and direction of a ventilating fan. This way, I’m not breathing lead and solder fumes, and I can minimize the puff of smoke eye focus problem! 73! de John PS For the chap in Fresno -- visit M2 Antennas! You can get some good VHF beams and other hardware, when you get your transverters! ___ 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] Re: Elecraft Digest, Vol 13, Issue 1
Ken, KG0WX, I noticed that you included your grid square, even all 6 digits! I hope you will soon think of the transverters as well! I'm feel'in kinda lonesome out here! 73! de John WA6BFH DM13bu ___ 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] Re: Elecraft Digest, Vol 12, Issue 38
I am surprised, and somewhat disillusioned to hear ‘questioning voices’ along the lines of modifying the K2 radio design! I do believe there is even a portion of the company’s main page where they recommend the radio, just because SINCE YOU BUILT IT, you will be well acquainted to improve upon its design! Anyone that has ever designed any circuit device knows that there is always Revision A, Revision B, revision C etc. This is true of simple “DC” circuits, and is more likely with “AC” circuits. Besides, it has already come to the fore that there are certain design deficiencies! I don’t fault the manufacturers for this, its simply bound to happen! So, fire up the soldering irons guys. Make your design modifications, and document them! That’s why you got a Ham license right, so as to get into the nitty gritty of electronics and radio science? .. Anyone else have any thoughts on my previous transverter post? 73! de John ___ 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] Re: Elecraft Digest, Vol 12, Issue 30
I am interested in chatting with anyone using the Elecraft transverters with their K2100. I am asking in the context of: 1) From the person or person's that have them all. Plus, maybe others from SSB Electronics, or DEMI etc. 2) From looking at the K2 as only an I.F. albeit a 28 MHz I.F. 3) I in fact, to a large extent, am thinking of the transverters as I.F.'s at 144 MHz etc! Anybody out there playing in the same sand box? 73! de John WA6BFH ___ 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
