- ... Yes you could be right about it being too messy, I have not yet opened my prezzy and have not looked at the actual board and whether a modified board wouldMessage 1 of 8 , Jan 14, 2013View Source
> I suppose it could be done but I feel it would be very messy.Yes you could be right about it being too messy, I have not yet opened my prezzy and have not looked at the actual board and whether a modified board would fit in the KM5H box. I had assumed before I bought that it would just need the low pass filter changing, but I see from the circuit there are three main circuits that need changing which means 12+ wires going from the main board to a daughter board. Hum.
> Build something else if you want multi bands. Or more Ensembles.
OK so probably I just build a 20/30/40m unit (option B) have some fun with it and then later build a true multi-band version.
Shame the Ensemble RxTx does not have a low pass band switcher like the Ensemble 2 Rx. Anyway I expect lots of people have said that before. Are there any previous conversations on this subject?
Ensembles are no so cheap in the UK. The Kit including postage was £62.22, the KM5H Box £21.51 and the VAT + Royal Mail Charge £18.94. Total of £102.67.
73 David 2E0CQC
- David, I built mine a year ago Christmas for 40/30/20. I really like it a lot and have been happy with the band choice. I d advise against trying to modMessage 2 of 8 , Jan 14, 2013View SourceDavid,
I built mine a year ago Christmas for 40/30/20. I really like it a lot and have been happy with the band choice. I'd advise against trying to mod it; it's challenging enough just to get it all built correctly.
One tip: print out the individual build section notes and take a lot of your own notes as you go. I did, and it saved me some grief. It was especially helpful to jot down actual measured values in testing. Whenever I suspected something had gone wrong, I was able to go back through my test points and verify my earlier measurements.
You'll likely note my own question in this group regarding how to get it to transmit. Hopefully someone will step forward with some very clear explanation of this; I've been disappointed in the RXTX only in the sense that it's difficult to figure out what to do to transmit. I suspect that the device itself works fine but have not yet successfully navigated which software to use, or how to set it up.Best of luck,John
- Some variables: 1. What kind of operating do you want to do? If you want to do contest-type operation (either the big ones, or the smaller QRP events) you needMessage 3 of 8 , Jan 14, 2013View SourceSome variables:1. What kind of operating do you want to do? If you want to do contest-type operation (either the big ones, or the smaller QRP events) you need coverage of the original bands rather than the WARC bands (the ones that were added in a 1979 conference - 30, 17, and 12 meters). 40-30-20 is a good choice for that. If you prefer calm rag chews on a quieter band, you might like more coverage of the WARC bands, making 30-20-17 an appealing option.2. What time of day to you expect to operate? The lower frequency bands (80 and 160 meters, and 40 meters to a lesser extent) are most useful at night, so those bands would be good if your plan is to get in a day of hiking or climbing and then bring out the rig at camp. The higher frequency bands (17 meters and up) are mostly daytime bands, so if your plan is to climb a bit, spend time operating, and then go home, you'll want to focus on those. 30 and 20 are useful at almost any time of day.3. How much antenna are you willing to carry and put up? Antennas for the lower frequency bands are larger.4. A future consideration is the sunspot cycle. The highest bands like 12 and 10 meters have some potential now, but in a few years when we're back at a low point in the cycle there won't be much going on there.If I were going to have just one, my own recommendations would be (in my personal order of preference):1. 40-30-20: A strong all-around choice. You'll be able to contact somebody just about all the time. You'll be prepared for the popular QRP field operating contests; 40 and 20 are the busiest bands.2. 30-20-17: A good alternative for the non-contester, with two non-contest bands instead of one.3. 80-40: For the op who mostly plans to use it at base camp at night.When you build your second or third Ensemble you can think about the other options! For me 15-12-10 is too time-limiting (most days it will be useless after dark, and it will also be a brick during the low part of the sunspot cycle), and if you're a ham who wants the 160 version you already know who you are.I wouldn't consider the options with extra boards and relays for a field radio. You want simple, rugged, and reliable for your intended application of hilltopping. If you really want to cover more bands build a second one; that increases the overall reliability of your station rather than decreasing it.
- ... 20/30/40m it is then, I will let you know when I get to that stage :)Message 4 of 8 , Jan 14, 2013View Source
> I've been disappointed in the RXTX only in the sense that it's difficult to figure out what to do to transmit.20/30/40m it is then, I will let you know when I get to that stage :)
- Thanks for all the advice, 20/30/40m sounds like the all-around fav. I have no interest in contests! Mainly interested in just going for long walks andMessage 5 of 8 , Jan 14, 2013View SourceThanks for all the advice, 20/30/40m sounds like the all-around fav. I have no interest in contests! Mainly interested in just going for long walks and chatting to people QRP. The antenna will either be a long horizontal wire between two Audi £1 fibre glass poles or a large backpack whip. I guess I might need a small ATU as well!
> When you build your second or third Ensemble you can think about the otherI have no interest in building a second limited band machine. I will have to opt to design and build my own I think.
Thanks for all the answers guys