Search found 134 matches
- Mon Nov 17, 2025 9:02 pm
- Forum: Questions & Advice
- Topic: No signal out of MFJ-1899t antenna
- Replies: 12
- Views: 1047416
Re: No signal out of MFJ-1899t antenna
I stand corrected - I'll update my saying!
- Mon Nov 17, 2025 9:01 pm
- Forum: General Discussion
- Topic: Dual operator CW POTA script
- Replies: 2
- Views: 71327
Re: Dual operator CW POTA script
What you're proposing isn't wrong or illegal or anything like that, but I would find it very confusing, and I'm not a new operator - which I think is kind of the target audience for POTA. Why not just take turns operating? Have one operator get 10 contacts and then turn it over? Or one of you act as...
- Fri Oct 31, 2025 3:03 pm
- Forum: Field Kits and Reports
- Topic: N7RCS Field Kit Evolution Part 2
- Replies: 4
- Views: 187730
Re: N7RCS Field Kit Evolution Part 2
Jim, I like the clear box idea! I see that you have (several) EFHW antennas in your kit. I always try to have a couple of different type antennas in my kit in case the location doesn't support a certain antenna. For example, I took my magloop to activate a park in Maryland, but the wind was blowing ...
- Wed Oct 29, 2025 7:51 pm
- Forum: General Discussion
- Topic: Weird homebrew antenna issue
- Replies: 4
- Views: 33044
Re: Weird homebrew antenna issue
Take a look at some of the designs on QRPGuys.com and QRPBuilder.com. They have designs that use easy to obtain parts and great documentation. You can either buy one of their antenna kits (DS1 at QRPGuys and QX1 at QRPBuilder) or look at their instructions and build your own.
- Wed Oct 29, 2025 7:46 pm
- Forum: Questions & Advice
- Topic: No signal out of MFJ-1899t antenna
- Replies: 12
- Views: 1047416
Re: No signal out of MFJ-1899t antenna
90% of a contact is due to propagation.
9% of a contact is due to your antenna.
1% of a contact is due to your power.
9% of a contact is due to your antenna.
1% of a contact is due to your power.
- Tue Oct 28, 2025 1:09 pm
- Forum: General Discussion
- Topic: 3D Printed Coffin Bug Cover
- Replies: 3
- Views: 26636
Re: 3D Printed Coffin Bug Cover
Don,
I'm glad it works!
I bought my coffin bug because I thought it would be more portable than my Vibroplex. It is, but it still weighs more than the rest of the gear in my bag!
73,
Mike, KL7MJ
I'm glad it works!
I bought my coffin bug because I thought it would be more portable than my Vibroplex. It is, but it still weighs more than the rest of the gear in my bag!
73,
Mike, KL7MJ
- Tue Oct 21, 2025 12:50 am
- Forum: Questions & Advice
- Topic: No signal out of MFJ-1899t antenna
- Replies: 12
- Views: 1047416
Re: No signal out of MFJ-1899t antenna
Before you toss the 1899 in the trash, try tuning it to resonance without a tuner. It's a marginal antenna, so you need as much RF as possible getting out. The ATU is probably consuming your power. I had a successful POTA activation with an 1899 last spring, so I know it can be done. Try it on 20m o...
- Tue Oct 21, 2025 12:44 am
- Forum: General Discussion
- Topic: Inexpensive (and fun) cootie/paddle
- Replies: 1
- Views: 8320
Re: Inexpensive (and fun) cootie/paddle
I bought the same one. It's very nice, but also requires a very light touch. I'm somewhat partial to the hacksaw blade cootie design for now.
73,
Mike, KL7MJ
73,
Mike, KL7MJ
- Tue Oct 21, 2025 12:40 am
- Forum: General Discussion
- Topic: Weird homebrew antenna issue
- Replies: 4
- Views: 33044
Re: Weird homebrew antenna issue
I have a $20 telescoping portable antenna (based on a thread on QRZ). It consists of a 17 foot vertical and four 18 foot radials.
A 17 foot (5.8m) vertical is resonant around 13MHz without any coil. Try bypassing (shorting out) the coil and see how that works.
73,
Mike, KL7MJ
A 17 foot (5.8m) vertical is resonant around 13MHz without any coil. Try bypassing (shorting out) the coil and see how that works.
73,
Mike, KL7MJ
- Tue Oct 21, 2025 12:33 am
- Forum: General Discussion
- Topic: 3D Printed Coffin Bug Cover
- Replies: 3
- Views: 26636
3D Printed Coffin Bug Cover
Here is a replacement cover for the Hi-Mound HK-100 Coffin Bug.
https://www.thingiverse.com/thing:7177743
Please let me know if I need to make any modifications.
73,
Mike, KL7MJ
https://www.thingiverse.com/thing:7177743
Please let me know if I need to make any modifications.
73,
Mike, KL7MJ