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Messages - caulktel

Pages: [1] 2 3
1
It is a good read. I've never thought of a guitar string as a antenna, but it was good for understanding it.

Joel
N6ALT

2
Radio Reviews, Questions and Comments. / Re: 40m Most Useful Single Band
« on: August 15, 2017, 11:14:50 AM »
I have used the MFJ and quite a few of the BitX's and Gil is right, unless your a techi kind of person, better steer clear of the BitX's. I have made some great DX contacts, (Antarctica on a BitX17), but not before a lot of work. The MFJs are great single band radios. My only gripe with them is they tend to drift a little bit as they warm up.

Joel
N6ALT

3
I was surprised to stumble across this thread because after owning just about every QRP rig out there, (no Elecrafts, too $$$), I decided to finally order a FT-817ND yesterday. I have built many QRP radios, CW and SSB and DSB too, but they all had drawbacks of one sort or another, so after watching a lot of YouTube videos and noticing that for the most part they most are running 817s, I decided to try one. I have a Hardrock 50 amp that I rarely use, but it might make the 817 more usable in bad conditions. I also have a Elecraft T1 tuner that I seldom use which interfaces real well with the 817. The radio will be here tomorrow, so we shall see.

Joel
N6ALT

4
General Discussion / Re: Chinese hf radio
« on: July 31, 2017, 07:11:04 PM »
Hi,

I have the FX-4A from the same guy and it is my favorite radio. I have thought about picking up a FX-9A. I have appealed to BG2FX, (the guy who designed and sells them), for schematics and firmware information about those radios, and he told me NO! because he is afraid people will copy his design, but he wont upgrade the firmware to fix minor problems, so I have held off buying another radio from him. I sure like mine though.

Joel
N6ALT

5
Antennas / Re: The PAR OA144 2m Omnidirectional Antenna.
« on: July 24, 2017, 06:55:05 PM »
Great video Gil,

I contacted Dale Parfitt about your antenna after watching your video and to get pricing and some info. He got right back to me with this:

These antennas are an entirely different design from the classical
  shortened  half wave loops.
   Omniangles use an electrical length LONGER than a half wave and an
  isosceles  triangle shape to synthesize a perfect omnidirectional pattern
  (within +/-
   0.5dB). The square and round loops have an elliptical pattern with front
  to  side ratios of 5dB and more! We hope to soon have plots taken at the
  Florida  Motorola anechoic chamber of all of the commercial "omnis" on our
  site
   Our largest clients are commercial and military. As a result, all of our
   hardware is stainless, all metal surfaces are either polished or
   jitterbugged. The connectors are silver/teflon. The Omniangles are the
  only  commercial series that have a built in balun and do not require an
  insulated  mast in order to prevent mast/feedline radiation.

I think I will be buying one of these as soon as I can afford it. I just bought a HF Mag Loop, so I have to recover from first.

Joel
N6ALT

6
I would love to buy your 817, but I have no $$$ right now:-( I saw it on QRZ also.

Joel
N6ALT

7
I use this for my main radio. I have a Hardrock 50 amp, but rarely use it. http://www.multus-sdr.com/index.php?main_page=product_info&cPath=65&products_id=190
It has the sound card built in and delivers 5 watts on all bands and is cheaper.

Joel
N6ALT

8
Morse Code / Re: Japanese Inspired minimalism and Morse Code
« on: July 06, 2017, 06:40:38 PM »
Ray,

That was very elegantly put, Thanks.

Joel
N6ALT

9
Antennas / Re: Trapped EFHW info
« on: July 01, 2017, 10:54:19 AM »
Hi Bob,

I agree with you about the LNR transformers, I have several, and have built at least five myself, they are 60:1. They are what I use most of the time. I will try the 63' wire you mentioned and see if I can get it resonate on both bands. Thanks for your help.

Joel
N6ALT

10
Antennas / Re: Trapped EFHW info
« on: June 30, 2017, 01:21:09 PM »
Well my trapped EFHW was a epic failure. After getting the 20 meter section perfectly tuned with the trap on the end of the wire, I added the 40 meter section. 20 was still fine but the 40 meter section was too long and resonating at about 6.8Mhz, so I started cutting it to get it in band, well that messed up the 20 meter side, so I had to add a foot to it to get it back in tune, then 40 was out again, so I cut some more off the 40 meter side, then the whole antenna became messed up. 20 was resonate in 2 places, neither of which were in the ham bands and 40 was no longer resonate at all. It got so hot outside, I packed up and went home:-( I don't know if I want to try this again, I may just stick with mono band EFHW antennas. Bob, are you saying a 63' wire is resonate on 40 and 20 without a tuner? I have used it that way, but always needed a tuner on 20.

Joel
N6ALT

11
VHF and Above / Re: VHF SSB for Local/Regional Comms? And IC-251E...
« on: June 25, 2017, 05:20:55 PM »
Thanks Gil, I'm rather proud of my IC-251A. I'm using it with a halo antenna right now and it seems to work very good with low SWR. I also have a small 40 watt 2 meter amp, but have not had to use it yet. I'm mostly working local SSB right now. Where did you find a CTCSS board? I would have though those would be hard to find by now. I had to completely rebuild the mic, but it sounds good now and has the DTMF pad in it. Great old radio.

Joel
N6ALT

12
Antennas / Re: Trapped EFHW info
« on: June 24, 2017, 01:02:12 PM »
 Lamewolf, that's the same transformer I use on all my EFHWs. Works great on all bands.

Joel
N6ALT

13
VHF and Above / Re: VHF SSB for Local/Regional Comms? And IC-251E...
« on: June 24, 2017, 12:58:15 PM »
Hi Gil,

A Ham friend of mine gave me the US version because it didn't work. I was able to restore it back to working order. It is a great radio.

Joel
N6ALT

14
Antennas / Re: Chameleon PLOOP 2.0.
« on: June 24, 2017, 12:47:56 PM »
I built one out of copper tubing and PVC pipe and a air variable cap from Ebay. $30 total. The problem is, it's not portable and wont fit in my car, so I guess that why they get the big $$$, portability.

Joel
N6ALT

15
General Discussion / Re: QRP Night, seems like a good idea...
« on: June 24, 2017, 12:43:19 PM »
I built a new Trapped EFHW for 20/40 meters to use for Field day, and planned to go portable today, but today is going to be the hottest day of the year, (about 110 F), so I decided to stay in my air conditioned shack and work a few people from here instead. I know, I gave up to easy:-(

Joel
N6ALT

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