Bitcoin donations to: 1CE9UfWJcHBYkWPns7iqBqZgKhd5xfqEaM thanks!
Buy Bitcoins easily by clicking HERE!


Use coupon radiopreppers for 20% off on the above site.

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - caulktel

Pages: [1] 2 3 ... 10
1
I'm in line also, can't wait. Also waiting for the 40 meter Slop Bucket II to be released with the LCD display!

Joel
N6ALT

2
Morse Code / Re: Can Morse Code Still Save You?
« on: August 28, 2018, 03:07:19 PM »
Great article Gil, sure sparked a lot of opinions but that's great if it gets people thinking.

Joel
N6ALT

3
Stan,

Sorry, I meant to direct you to http://ubitx.net/ for more info regarding the uBitx problem. Farhan's rebuttal is there. Personally I don't think this is as big a problem as some individuals are trying to make us believe. I still use mine everyday.

Joel
N6ALT

4
Hi Stan,

I am aware about insulating the IRF510's from ground, I have done this on all 5 of my Bitx builds.

 As far as the harmonic/spur problems of the uBitx are concerned, its far too complicated for me to explain, and due to the fact that no two people can agree to anything on that group, it muddys  the water even further. Suffice it to say, something needs to be done and I'm waiting to see what Farhan comes up with, he always seem to find a simple solution to problems as opposed to these people that want to start from scratch and completely redesign the radio.

Joel
N6ALT

5
Oh yeah, a lot of guys doing FT8 and other modes. I'm just not in to digital modes so I haven't paid much attention to it.

Joel
N6ALT

6
Don't know if any of you have been following the debacle going on over at the bitx20.io group regarding the uBitx, but those few fortunate people who have quality Spectrum Analyzers and know how to use them, have found that the uBitx 'mostly' does not pass FCC specs, (US), for spectral purity, (some nasty spurs). Some are advising not to use them on the air until some kind of fix is figured out. Funny I have been using mine every since they came out and nobody has knocked at my door yet, but I don't want them to either. All of the EE's on the group are seeking to redesign the uBitx to meet specs. I find this whole thing to be rather disheartening after all the time and effort I put into my two radios. They are talking about cutting the traces going to the LPF section and adding a daughter board with a new LPF design to fixed the existing boards. Not quite sure what to do but wait and see what everybody comes up with. :( :-[ :-\

Joel
N6ALT

7
Antennas / Re: The 49:1 Half-Wave End-Fed Transformer Campain is ON!
« on: August 04, 2018, 05:18:21 PM »
Gil,

I agree, most of these groups have a select few people that like to hear themselves talk and are self professed experts. I have been using EFHW wires with 64:1 and 49:1 transformers with great results for 30 plus years. I continue to use them and will keep using them. As far as I'm concerned, I can't tell any difference between using a 49:1 vs a 64:1 transformer either, they both seem to work equally, just slightly different wire lengths. We use what works, including my Mag Loop which people say is a waste of time but mine works great.

Joel
N6ALT

8
Antennas / Re: Successful Wire Antennas.
« on: August 03, 2018, 10:19:38 AM »
Strange, there are 237 pages in that PDF but when I download it I can only look at 145 of them. I really wanted to the section on EFHW's.

Joel
N6ALT

9
Antennas / Re: The 49:1 Half-Wave End-Fed Transformer Campain is ON!
« on: July 28, 2018, 12:43:44 PM »
Gil,

I don't know if you will be able to read this thread or not, but it's all about EFHW and 49:1 transformers and the like. Some of the people were shouting at each other, but still some good information. https://groups.io/g/BITX20/topic/end_fed_antennas_w_ubitx/23807137?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,23807137

Joel
N6ALT

10
Antennas / Re: The 49:1 Half-Wave End-Fed Transformer Campain is ON!
« on: July 27, 2018, 11:15:44 AM »
Gil,

I like the idea of your campaign. I have a question though, for years I have been building EFHW auto transformers using this method, http://www.zendamateur.com/download/file.php?id=4051 which is a 60:1 transformer. Yours is a 49:1, whats the difference? Mine seem to work very well, would there be a advantage to using a 49:1 over the 60:1? Just curious.

Joel
N6ALT

11
I ordered another uBitx, it should be here in a few days. It will be the V4 board with some improvements incorporated into the new PCB. I will be using a 3.2 inch Nextion touch screen display on this one.
I'm going to make numerous case improvements to this one, like bolting the finals to the case for better heat dispersion. Gil, you wont like this one because it's going to have a higher idle current draw than the previous one, but it isn't intended for portable use.
I look forward to starting work on it. Ill post my progress.

Joel
N6ALT

12
Morse Code / Re: Yaesu CW Filters
« on: July 11, 2018, 01:19:26 PM »
I feel like have to defend the FT-817 :D I love my FT-817ND but I only use it for SSB and I'm very happy with the performance. I do have the Inrad SSB filter installed. YMMV.

Joel
N6ALT

13
General Discussion / Re: Have you tried the 160m band?
« on: July 04, 2018, 12:43:39 PM »
I always marvel at Peter Parker, VK3YE's videos running 160 meters AM/SSB QRP with a kite antenna and dipoles. https://youtu.be/ACiQlOThXR0 There always seems to be someone on the air in Australia and he always works from the beach with the wind blowing. It is a intriguing band alright. I wish I could try it out somehow, but kind of hard from a mobile home park.

Joel
N6ALT

14
General Discussion / Re: Have you tried the 160m band?
« on: June 28, 2018, 06:39:56 PM »
A QCX for 160 meters :) Could you imagine how many turns you would need to put on T1?

Joel
N6ALT

15
Looks great Andy, I love that gray finish. I wonder if a blue display might not look really sharp with the gray case. I just received my AGC and Click/pop kits today so I'm going to start in on building them and modifying my uBitx board Monday morning. I could put up with the pop every time I let go of the PTT, but this radio really needs AGC, so looking forward to finishing it. Keep us posted on your results.

Joel
N6ALT

Pages: [1] 2 3 ... 10