XPost: rec.radio.amateur.misc

Amateur/Ham Radio

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the new Hexbeam is alive...

Posted: 30 Jun 2022 06:58 PM PDT https://www.reddit.com/r/amateurradio/comments/vop253/the_new_hexbeam_is_alive/

submitted by /u/Last-Salamander-920
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Hey all! New tech KF0JRT. Bought a Feng UVS9+ and am finding the hard way
that I just cant talk to anybody. I live in a small farming town and any
active repeater is 25 to 30 miles away. Is it worth looking for a more
powerful HT connected to a bigger antenna, or should I skip right to 50W mobile?

Posted: 30 Jun 2022 11:24 AM PDT https://www.reddit.com/r/amateurradio/comments/vof6xv/hey_all_new_tech_kf0jrt_bought_a_feng_uvs9_and_am/

submitted by /u/Father_Togwood
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No spell check on label maker at Motorola service department

Posted: 30 Jun 2022 11:32 AM PDT https://www.reddit.com/r/amateurradio/comments/vofdey/no_spell_check_on_label_maker_at_motorola_service/

submitted by /u/n3fyi
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Can I use this power supply of mine with a Yaesu FT 450D for now on less
power than 100 watts until I can buy another power supply for my Yaesu
radio?

Posted: 30 Jun 2022 07:08 PM PDT https://www.reddit.com/r/amateurradio/comments/vop9kh/can_i_use_this_power_supply_of_mine_with_a_yaesu/

submitted by /u/Routine_Watercress76
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Family

Posted: 30 Jun 2022 03:19 PM PDT https://www.reddit.com/r/amateurradio/comments/vokl4e/family/


Sometimes on YouTube I see ham radio operators on 2 meters or HF letting
their family members communicate, is that allowed as long as you (the ham
radio operator of your station) is present with your family members?
submitted by /u/Routine_Watercress76
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Why do so many end fed calculators treat 2/2 lambda 4/2 lambda, 6/2 lambda, etc. as 'high impedance'?

Posted: 30 Jun 2022 08:43 AM PDT https://www.reddit.com/r/amateurradio/comments/vobg3l/why_do_so_many_end_fed_calculators_treat_22/


I am planning to experiment with my first custom built antenna, a simple
end fed.
The popular online calculators seem to caution against ALL half wavelength multiples, which is strange because 2/2 lambda = 1 lambda. In other words,
even multiple harmonics would resonate quite well, right?
Im scratching my head wondering why the popular calculators seem to ignore
this fact. There are MATLAB, SciLab, and C programs posted online that
ignore this aspect.
For what its worth, I am developing a similar end fed impedance calculator, taking into consideration that even half wave multiples resonate with low impedance. This opens up possibilities for many more practical antenna wire lengths, compared to earlier calculators.
https://mcandre.github.io/fluke/
Please check my math and my antenna theory. Eager to learn more about the craft. submitted by /u/n4jm4
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How is DSTAR not encryption if it is closed source?

Posted: 30 Jun 2022 09:40 AM PDT https://www.reddit.com/r/amateurradio/comments/voct00/how_is_dstar_not_encryption_if_it_is_closed_source/


From what I can find per the googles, the FCC allows the use of algorithms
to encode radio signals, but they must be widely available else it is encryption and not allowed. DSTAR isnt open source so how is it not
encryption and allowed?
Does anybody have any FCC decisions or anything on this issue? I am a big advocate for FOSS software and this irritates me. I believe it is
encryption and not encoding b/c I cant look at the source code, or at least
get a binary.
Im a lawyer so if all you have is a dense hard-to-read decision without explanation or just cite to a opinion Im fine with that. I can figure it
out from there submitted by /u/Marconi_and_Cheese
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How to charge a Bioenno LiFeP04 battery

Posted: 30 Jun 2022 10:36 PM PDT https://www.reddit.com/r/amateurradio/comments/vot52j/how_to_charge_a_bioenno_lifep04_battery/

submitted by /u/ContributionChoice68
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Anyone running 900 MHz?

Posted: 30 Jun 2022 01:24 PM PDT https://www.reddit.com/r/amateurradio/comments/vohyc1/anyone_running_900_mhz/


Ive been looking into getting a repurposed handheld and/or mobile. There
are some repeaters in my area, including one maybe a mile or two away from
me. Some with all-star links and some that are networked to other repeaters throughout the state of Texas. Used equipment doesnt seem that terribly expensive, I am mainly looking at the Kenwood TK 981 and NX 411. Not sure
about mobile antennas.
I currently have a mobile rig, and I dont know if I could fit a second
radio and antenna, but there are enough repeaters in the area that it could
be fun to play with. submitted by /u/SonicResidue
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Anyone Tried This Loop Antenna?

Posted: 30 Jun 2022 09:30 PM PDT https://www.reddit.com/r/amateurradio/comments/vorzrz/anyone_tried_this_loop_antenna/

submitted by /u/wd8dky
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Can you identify this tiny 12v connector?

Posted: 30 Jun 2022 12:38 PM PDT https://www.reddit.com/r/amateurradio/comments/vogxb7/can_you_identify_this_tiny_12v_connector/


I want to upgrade the fans on my radios to Noctuas. The noise is driving me crazy.
I have found the correct fans, but the connectors that come on the Noctura
do not fit the radio.
Yes, I can just splice them, but that will void my warranty on two very new radios.
So I thought I would buy the correct plug for the connector and use that on
the Noctura and not cut up the factory wiring so I could swap back to the factory fan if I ever have to send in for warranty work.
Google image search has led me the "Mini Micro JST PH 2 Pin Connector" ,
but I cannot tell if that is the correct size
Screenshots are from the excellent fan swap guide for the 2730A by KD9PAH.
Fan pics of the FT891 here, seem to be the same type of connector
Thanks! https://preview.redd.it/qw0fwol69t891.png?width=142&format=png&auto=webp&s=2a6057a138dba9de8b5f9afd2e0e0c49295208b6
https://preview.redd.it/em5sdrl69t891.png?width=72&format=png&auto=webp&s=d7ca998497167b4e01785fd8205ee4c6e9ab7ec1
https://preview.redd.it/jcgnppl69t891.png?width=147&format=png&auto=webp&s=bb1029607e4a3b07bfe44be2c0da44e502ef3bb3
submitted
by /u/Thetanir
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How will West Virginia vs EPA affect anything? The FCC is bound by the same concepts and now what little teeth they had just got filed down somewhat.

Posted: 30 Jun 2022 10:34 AM PDT https://www.reddit.com/r/amateurradio/comments/voe1kg/how_will_west_virginia_vs_epa_affect_anything_the/


The USSC just ruled that TLAs have some serious limits on the rules they
can impose. Anything that the FCC imposed that is now liable to be voided
out? submitted by /u/TheQuarantinian
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What's your perfect logging app?

Posted: 30 Jun 2022 08:01 PM PDT https://www.reddit.com/r/amateurradio/comments/voqb3i/whats_your_perfect_logging_app/


I recently made a lookup tool and was thinking of expanding it to include a logger. I dont really have experience with loggers, so I thought Id ask: If
you could have the perfect logging app, what features would it have?
submitted by /u/BinaryCipher
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More power captain?

Posted: 30 Jun 2022 07:53 PM PDT https://www.reddit.com/r/amateurradio/comments/voq5ig/more_power_captain/


I live midpoint on the side of a hill surrounded by other hills. If I walk
to the top of the hill I can hit 2 more repeaters I would not be able to otherwise using a 5W HT. If I purchase a 25W transmitter and antenna for my house, do you think it would help push my signal over the hills?
submitted by /u/lifeisbollocks
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Finally figured out my car's RFI... anyone dealt with noisy gauges?

Posted: 30 Jun 2022 07:52 PM PDT https://www.reddit.com/r/amateurradio/comments/voq5ad/finally_figured_out_my_cars_rfi_anyone_dealt_with/


I have an older diesel truck, thats about as non-electrically motivated as
any car could be made in the last 30 years, and its always had bad RFI on
2M. Sometimes its bad enough I get a 10 second long noise blast with max squelch on 2M (not 70cm).

And I finally figured out the cause, my a-pillar cluster of ISSPRO
(example) gauges. Its been staring me in the face this whole time while I
went about chasing everything but that. Doh.

Has anyone had this before? I kinda need the gauges when towing and in the mountains. I have direct leads to the battery, toroids on each end of every cable except the power (hmm...). Ill be reaching out to ISSPRO, just
curious if this is a common thing? Aside from the hydrometer, the other two
are largely mechanical aside from their backlights: fuel pressure and boost gauge. submitted by /u/Cyclic404
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Why end fed quarter wave but dipole half wave?

Posted: 30 Jun 2022 12:52 PM PDT https://www.reddit.com/r/amateurradio/comments/voh8rz/why_end_fed_quarter_wave_but_dipole_half_wave/


People online are saying that dipoles ideally target half wavelengths,
while end feds ideally target quarter wavelengths. That using half for end
fed or quarter for dipole, results in a poorly performing antenna. And may
even cause electrical damage to equipment. But why?
Isnt a dipole just two end feds joined at the hip? Why come joining two end feds into a dipole suddenly flips the quarter-vs-half impedance rule on its head?
Please explain like Im five years old. Because Im new to radio. Got my Technician license, but have only begun to dip my toes into the waters of antenna theory. submitted by /u/n4jm4
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DMR Radio

Posted: 30 Jun 2022 08:19 PM PDT https://www.reddit.com/r/amateurradio/comments/voqnpg/dmr_radio/


I’m looking into getting a TYT VHF/uhf DMR radio and getting more into it.
I can’t find a lot of info online about it. Can someone explain what DMR is used for in America? Also could it be used as a GMRS radio? Finally I have
some public safety frequencies around me that haven’t gone to digital. I’m able to pick them up on a UV5r(it’s set to receive only) . Could I maybe listen to those also with a DMR radio. Thank you. submitted by /u/Over_Ad_4550
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PCV antenna tower... maybe yes.

Posted: 30 Jun 2022 09:44 AM PDT https://www.reddit.com/r/amateurradio/comments/vocwkv/pcv_antenna_tower_maybe_yes/


I happened noticed an article in the January 1981 issue of QST about a PCV antenna tower. The author designed and built 30ft towers for a phased array antenna using CL 125 PVC sprinkler pipe and triangular wooden gusset plates (triangular spacers.) Light enough to be lifted with one hand it requires
some bracing or guys.
(Note: class and schedule are different. The author isnt clear about this.
CL 125 pipe is very thin wall. For 2" pipe the wall thickness of CL 125 is
only 0.073" while schedule 80 is 0.218" thick)
I think hes on to something. Im may try this with ABS pipe (not foam core)
and plates cut from ABS sheet so they can be cemented together. It would
then be painted for UV protection.
http://www.introni.it/pdf/QST%201981.pdf
Edit: January not July, thanks u/squeakyc submitted by /u/ArmstrongRotor
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Not amateur radio, but can anyone explain this? Wouldn't frequency
allocation prevent this harmful interference Starlink is prophesying?

Posted: 30 Jun 2022 10:16 AM PDT https://www.reddit.com/r/amateurradio/comments/vodm44/not_amateur_radio_but_can_anyone_explain_this/

submitted by /u/SamObius
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40' - 60' Telescoping aluminum masts

Posted: 30 Jun 2022 12:11 PM PDT https://www.reddit.com/r/amateurradio/comments/vogb1a/40_60_telescoping_aluminum_masts/


Do these telescoping aluminum masts made by Spiderbeam, Rohn, MFJ etc have grounding terminals on them? Anyone own one and knows for sure? submitted
by /u/AmmoCat52
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