RE: [Elecraft] Potential Elecraft Kit
Actually, Larry, the Italian VNA can be used for filters, etc. On the analyzer web site, Davide posted info on adding a second BNC fitting to provide IN and OUT ports for this purpose. I finally got my unit working. Thought there was a problem with it, but it turned out to be in my laptop instead. I'll be making that mod in my unit. 73, Bob N6WG -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Larry Phipps Sent: Wednesday, April 13, 2005 9:07 AM Cc: Elecraft List Subject: Re: [Elecraft] Potential Elecraft Kit This looks like a nice little analyzer. I have used the AD8302 and it does a decent job within its 60 dB range limitation, which should be enough for most measurements. Since it has its own oscillator, I assume the levels are permanently set to maximize dynamic range. Note that it is a one port device, however, so it can't measure DUT input vs. output parameters such as gain and phase and other parameters between input and output. Larry N8LP Stewart Baker wrote: On Wed, 13 Apr 2005 09:28:56 -0400, Larry Phipps wrote: They may get another one going, but it was a lot of work and I wouldn't count on it. There's also a VNA project underway in Italy, but I can't recall the details. The Italian VNA project is at http://www.qsl.net/iw3hev/Antenna%20Analyzer%201.8-60%20MHz-Eng.htm After much internal debate, mainly because of available time, I have placed an order for a built one (shame!). I will let the group know how it performs when I get it. 73 Stewart G3RXQ . ___ 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 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] Potential Elecraft Kit
Yes, that was pointed out to me later. It looks like a useful device, and if the software is good might be worth it to have in addition to the N2PK, especially at the price. Larry N8LP Robert Tellefsen wrote: Actually, Larry, the Italian VNA can be used for filters, etc. On the analyzer web site, Davide posted info on adding a second BNC fitting to provide IN and OUT ports for this purpose. I finally got my unit working. Thought there was a problem with it, but it turned out to be in my laptop instead. I'll be making that mod in my unit. 73, Bob N6WG -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Larry Phipps Sent: Wednesday, April 13, 2005 9:07 AM Cc: Elecraft List Subject: Re: [Elecraft] Potential Elecraft Kit This looks like a nice little analyzer. I have used the AD8302 and it does a decent job within its 60 dB range limitation, which should be enough for most measurements. Since it has its own oscillator, I assume the levels are permanently set to maximize dynamic range. Note that it is a one port device, however, so it can't measure DUT input vs. output parameters such as gain and phase and other parameters between input and output. Larry N8LP Stewart Baker wrote: On Wed, 13 Apr 2005 09:28:56 -0400, Larry Phipps wrote: They may get another one going, but it was a lot of work and I wouldn't count on it. There's also a VNA project underway in Italy, but I can't recall the details. The Italian VNA project is at http://www.qsl.net/iw3hev/Antenna%20Analyzer%201.8-60%20MHz-Eng.htm After much internal debate, mainly because of available time, I have placed an order for a built one (shame!). I will let the group know how it performs when I get it. 73 Stewart G3RXQ . ___ 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 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] Potential Elecraft Kit
In a message dated 13/04/05 01:44:15 GMT Daylight Time, [EMAIL PROTECTED] writes: One of the insturments I always wanted for home use was a spectrum analyzer. Nice to have sound card analyzers with software and all, but a real rf analyzer in a small, functional package would be so great. With some careful trade off decisions it might even be affordable! The display is a big headache if you don't have a good Oscope handy but a creative designer [or two] might be able to do the job. I suppose it would not have the broad appeal of a K1, 2 or even a very compact antenna tuner, but it might appeal to a few hundred hams and others who do bench work. Wayne K9NE Yes, I know about the projects already on the web, but how many of you have actually rounded up all the stuff to build that one? -- Al Helfrick, K2BLA did a series of articles in the 1980's on just such an idea. The one published in RF Design, January 1988 had a 3 chip design for use with a cheap general purpose oscilloscope and was based on the MC3356 chip as the heart of the project. In November 1989, Radcom published an article by Roger, G4PMK that expanded on Al's ideas with a practical version that would cover 1 - 90MHz with a logarithmic display, 50dB dynamic range and a built in marker generator. The MC3356 converts the incoming 1 - 90MHz up to 145Mz where a Toko helical filter provides some selectivity. Is then down converted to 10.7 IF with an NE602, at which point the main selectivity is achieved with filters. The clever bit after this is the use of the second section of the MC3356 chip to provide a logarithmic IF and detector. A kits of parts and a PCBs were offered at the time so one was built. My basic analyser covers up to 97 MHz and have extended the range with external converters up to the 70cm UHF band. Believe the MC3356 chip is now obsolete so could be difficult to replicate. A handy tool for tracking down RF spurii and interference problems within it's capability. Commercial small spectrum analysers tend still to command a premium price on the surplus market and the main that are available tend to be large and heavy. I have such a one, the HP 141T/8554B combination. Can make your eyes bulge carrying the instrument, but still has a good performance considering it's age. This was our instrument of choice up to recent years with the HP 8555A plug in for maintaining analog microwave systems. For my own personal use at home tend to use the homebuilt device first and only pull out the HP 141T when circumstances force me to. Noticed a more recent design offered at a hamfest last year that covered up to 500MHz or more with what appeared to be a cable TV tuner at the front end. There are probably other built and kit versions of these spectrum analyser adapters available in the market. Bob, G3VVT ___ 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] Potential Elecraft Kit
On Wed, 13 Apr 2005 02:50:19 EDT, [EMAIL PROTECTED] wrote: In November 1989, Radcom published an article by Roger, G4PMK that expanded on Al's ideas with a practical version that would cover 1 - 90MHz with a logarithmic display, 50dB dynamic range and a built in marker generator. I built one of these simple spectrum analysers, and it works well within it's design spec, however I find that I don't use it. This is because of the Wide Resolution Bandwidth, it is OK for harmonics and widely spaced spurious, but for in-close (50kHz) measurements it does not cope. With DDS and support chips now available at reasonable prices it should be possible to produce a performance spectrum analyser (including good IF filtering) at a modest cost. How about it Elecraft ? 73 Stewart G3RXQ ___ 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] Potential Elecraft Kit
TAPR has a nice VNA project going, www.tapr.org... it was featured in a July/August QEX. They are also going to offer it assembled I think thru Ten-Tec. It does a lot more than an antenna analyzer to boot, but requires a computer so is not portable. It does all the complex impedance measurements, but since it has its own DDS signal source, it can also display gain/loss type measurements, differential phase and gain error, etc. Larry N8LP Julian, G4ILO wrote: If Elecraft is going to get into making kits for more sophisticated test equipment, I'd like to see an antenna analyzer. The MFJ ones are ridiculously overpriced over here, and it's not practical to bypass rip-off UK dealers and buy direct because MFJ levy a deliberately inflated international shipping charge. Besides, I'm sure an Elecraft product would be higher quality. 73, ___ 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] Potential Elecraft Kit
I would second the Antenna Analyzer. I have an MFJ unit, but it really can't be difficult to design a better unit. My requirements are as follows: - I don't care for portability (Although the Elecraft one would likely be small and portable anyway) - The ability to calibrate out a certain piece of feedline. - PC control, reporting - Frequency sweeps, with graphing (on PC), sweep PC controlled - Did I mention PC control? - Preferably standard RS232 comms, to facilitate developing new software. - Freq range up to 145 MHz (2m) at leas, pref to 500MHz. - OH, and PC control Cheers! 73 de ZR6SW -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Julian, G4ILO Sent: 13 April 2005 13:28 To: Elecraft List Subject: Re: [Elecraft] Potential Elecraft Kit If Elecraft is going to get into making kits for more sophisticated test equipment, I'd like to see an antenna analyzer. The MFJ ones are ridiculously overpriced over here, and it's not practical to bypass rip-off UK dealers and buy direct because MFJ levy a deliberately inflated international shipping charge. Besides, I'm sure an Elecraft product would be higher quality. 73, -- Julian, G4ILO G4ILO's Shack: http://www.tech-pro.net/g4ilo Stewart Baker [EMAIL PROTECTED] wrote: I built one of these simple spectrum analysers, and it works well within it's design spec, however I find that I don't use it. This is because of the Wide Resolution Bandwidth, it is OK for harmonics and widely spaced spurious, but for in-close (50kHz) measurements it does not cope. With DDS and support chips now available at reasonable prices it should be possible to produce a performance spectrum analyser (including good IF filtering) at a modest cost. How about it Elecraft ? ___ 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 -- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.9.7 - Release Date: 12/04/2005 ___ 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] Potential Elecraft Kit
May I suggest that people consider the N2PK Vector Network Analyzer. http://groups.yahoo.com/group/N2PK-VNA/ So far, I think it is a better design and is cheaper. Bob N4HY Larry Phipps wrote: TAPR has a nice VNA project going, www.tapr.org... it was featured in a July/August QEX. They are also going to offer it assembled I think thru Ten-Tec. It does a lot more than an antenna analyzer to boot, but requires a computer so is not portable. It does all the complex impedance measurements, but since it has its own DDS signal source, it can also display gain/loss type measurements, differential phase and gain error, etc. Larry N8LP Julian, G4ILO wrote: If Elecraft is going to get into making kits for more sophisticated test equipment, I'd like to see an antenna analyzer. The MFJ ones are ridiculously overpriced over here, and it's not practical to bypass rip-off UK dealers and buy direct because MFJ levy a deliberately inflated international shipping charge. Besides, I'm sure an Elecraft product would be higher quality. 73, ___ 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 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] Potential Elecraft Kit
I have one and it's great, definitely better than the tapr one... but I didn't mention it because the project is currently closed unless you are willing to take one of a handful of left over boards, which require installation of some mighty small SMD parts. The original project had those parts already installed. They may get another one going, but it was a lot of work and I wouldn't count on it. There's also a VNA project underway in Italy, but I can't recall the details. Larry N8LP Robert McGwier wrote: May I suggest that people consider the N2PK Vector Network Analyzer. http://groups.yahoo.com/group/N2PK-VNA/ So far, I think it is a better design and is cheaper. Bob N4HY Larry Phipps wrote: TAPR has a nice VNA project going, www.tapr.org... it was featured in a July/August QEX. They are also going to offer it assembled I think thru Ten-Tec. It does a lot more than an antenna analyzer to boot, but requires a computer so is not portable. It does all the complex impedance measurements, but since it has its own DDS signal source, it can also display gain/loss type measurements, differential phase and gain error, etc. Larry N8LP Julian, G4ILO wrote: If Elecraft is going to get into making kits for more sophisticated test equipment, I'd like to see an antenna analyzer. The MFJ ones are ridiculously overpriced over here, and it's not practical to bypass rip-off UK dealers and buy direct because MFJ levy a deliberately inflated international shipping charge. Besides, I'm sure an Elecraft product would be higher quality. 73, ___ 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 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 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] Potential Elecraft Kit
On Wed, 13 Apr 2005 09:28:56 -0400, Larry Phipps wrote: They may get another one going, but it was a lot of work and I wouldn't count on it. There's also a VNA project underway in Italy, but I can't recall the details. The Italian VNA project is at http://www.qsl.net/iw3hev/Antenna%20Analyzer%201.8-60%20MHz-Eng.htm After much internal debate, mainly because of available time, I have placed an order for a built one (shame!). I will let the group know how it performs when I get it. 73 Stewart G3RXQ ___ 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] Potential Elecraft Kit
This looks like a nice little analyzer. I have used the AD8302 and it does a decent job within its 60 dB range limitation, which should be enough for most measurements. Since it has its own oscillator, I assume the levels are permanently set to maximize dynamic range. Note that it is a one port device, however, so it can't measure DUT input vs. output parameters such as gain and phase and other parameters between input and output. Larry N8LP Stewart Baker wrote: On Wed, 13 Apr 2005 09:28:56 -0400, Larry Phipps wrote: They may get another one going, but it was a lot of work and I wouldn't count on it. There's also a VNA project underway in Italy, but I can't recall the details. The Italian VNA project is at http://www.qsl.net/iw3hev/Antenna%20Analyzer%201.8-60%20MHz-Eng.htm After much internal debate, mainly because of available time, I have placed an order for a built one (shame!). I will let the group know how it performs when I get it. 73 Stewart G3RXQ . ___ 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] Potential Elecraft Kit
Thanks Stewart, I missed that... the website was exceedingly slow here and I got tired of waiting for the manual to download. That makes it definitely worth a look, especially at that price. I love the N2PK, but it's a bit slow and needs better software... but for detailed measurements it's awesome. Larry N8LP Stewart Baker wrote: On Wed, 13 Apr 2005 12:06:59 -0400, Larry Phipps wrote: Note that it is a one port device, however, so it can't measure DUT input vs. output parameters such as gain and phase and other parameters between input and output. There is a mod that permits 2 port i.e transmission measurements to be made. 73 Stewart G3RXQ . ___ 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] Potential Elecraft Kit
Julian, G4ILO wrote: If Elecraft is going to get into making kits for more sophisticated test equipment, I'd like to see an antenna analyzer. Here is a nice one if you are looking for a kit. 73, Johan on4aeb http://www.amqrp.org/kits/kits.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] Potential Elecraft Kit
One of the problems with designing and selling kits is the production volume. Will enough of the kits be sold to justify the cost of developing the product. I don't know if there is enough demand in amateur radio to justify the development cost of a spectrum analyzer. Let me state the design specifications of a hypothetical high-performance HF-VHF spectrum analyzer that could be developed as a kit that would retail for $500. To keep the cost down, the analyzer would use a PC for control and display; the control of the RF portion would be done through a USB interface. The parts to do this design are available today - no great invention is required. Specifications Frequency coverage: 100 kHz to 160 MHz Resolution bandwidth: 100 kHz to 1 Hz Video bandwidth: 10 kHz to 1 Hz Dynamic range: 80 dB Power measurement error: 1 dB Maximum sweep speed: 10 MHz/second Maximum input power: +20 dBm Input noise figure: 20 dB Windows software included for control, display, printing and saving data; user supplies the PC. Option for $150 Tracking generator to make instrument into scalar network analyzer It would take about a person-year of effort to design the hardware, write the software, and create manuals. However, I think you would only sell about a hundred units per year. That makes the development cost too high to justify the effort. -John KI6WX Gang, One of the insturments I always wanted for home use was a spectrum analyzer. Nice to have sound card analyzers with software and all, but a real rf analyzer in a small, functional package would be so great. With some careful trade off decisions it might even be affordable! The display is a big headache if you don't have a good Oscope handy but a creative designer [or two] might be able to do the job. I suppose it would not have the broad appeal of a K1, 2 or even a very compact antenna tuner, but it might appeal to a few hundred hams and others who do bench work. Wayne K9NE Yes, I know about the projects already on the web, but how many of you have actually rounded up all the stuff to build that one? ___ 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] Potential Elecraft Kit
Shouldn't be too hard to even have it use a PC as a display, much like the sound card analyzers and PC-based oscilloscopes do, and that should help keep costs down. Count me in! -- 72, Ron McDowell - W5RCM / ZS1MCD w5rcm at volente dot us Austin TX / Hermanus ZA On 12 Apr 2005 19:43:35 -0500, [Wayne Reed [EMAIL PROTECTED]] wrote: Gang, One of the insturments I always wanted for home use was a spectrum analyzer. Nice to have sound card analyzers with software and all, but a real rf analyzer in a small, functional package would be so great. With some careful trade off decisions it might even be affordable! The display is a big headache if you don't have a good Oscope handy but a creative designer [or two] might be able to do the job. I suppose it would not have the broad appeal of a K1, 2 or even a very compact antenna tuner, but it might appeal to a few hundred hams and others who do bench work. Wayne K9NE Yes, I know about the projects already on the web, but how many of you have actually rounded up all the stuff to build that one? ___ 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 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] Potential Elecraft Kit: Spectrum Analyzer, Specs?
Hi Wayne, That's sounds very interesting. What frequency range and resolution would you like to have in the spectrum analyzer? What dynamic range is required for it to be useful? Other specification? 73/ Bob - W5BIG - Original Message - From: Wayne Reed [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Tuesday, April 12, 2005 7:43 PM Subject: [Elecraft] Potential Elecraft Kit Gang, One of the insturments I always wanted for home use was a spectrum analyzer. Nice to have sound card analyzers with software and all, but a real rf analyzer in a small, functional package would be so great. With some careful trade off decisions it might even be affordable! The display is a big headache if you don't have a good Oscope handy but a creative designer [or two] might be able to do the job. I suppose it would not have the broad appeal of a K1, 2 or even a very compact antenna tuner, but it might appeal to a few hundred hams and others who do bench work. Wayne K9NE Yes, I know about the projects already on the web, but how many of you have actually rounded up all the stuff to build that one? ___ 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] Potential Elecraft Kit
There are a couple sources for boards for the W7ZOI spectrum analyzer project that ran in QST some years back. Also, for about $500-700 on eBay you can get a used HP or Tek SA that will blow the doors off an inexpensive kit version. If you do a lot of RF design work, it's a must. The two most useful pieces of rf test gear I have ever bought are an HP-8640B signal generator and Tektronix 7L14 spectrum analyzer... together they were less than a decently outfitted K2. Larry N8LP Ron McDowell - W5RCM / ZS1MCD wrote: Shouldn't be too hard to even have it use a PC as a display, much like the sound card analyzers and PC-based oscilloscopes do, and that should help keep costs down. Count me in! -- 72, Ron McDowell - W5RCM / ZS1MCD w5rcm at volente dot us Austin TX / Hermanus ZA On 12 Apr 2005 19:43:35 -0500, [Wayne Reed [EMAIL PROTECTED]] wrote: Gang, One of the insturments I always wanted for home use was a spectrum analyzer. Nice to have sound card analyzers with software and all, but a real rf analyzer in a small, functional package would be so great. With some careful trade off decisions it might even be affordable! The display is a big headache if you don't have a good Oscope handy but a creative designer [or two] might be able to do the job. I suppose it would not have the broad appeal of a K1, 2 or even a very compact antenna tuner, but it might appeal to a few hundred hams and others who do bench work. Wayne K9NE Yes, I know about the projects already on the web, but how many of you have actually rounded up all the stuff to build that one? ___ 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 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 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
