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Author Topic: HT in shirt pocket gets better reception than mobile antenna...any suggestions?  (Read 4864 times)
KC9MGX
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Posts: 14




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« on: March 19, 2018, 12:12:07 PM »

Hey folks,

So I was riding with my HT (Baofeng UV-5R w/ 2.5" stubby antenna) in my shirt pocket. It was getting better reception than my mobile (BTech UV-25x2 w/ Nagoya Original mag mount).

I was thinking my part of the area just has lousy coverage, until my HT was picking up conversations that the mobile was not.

Any thoughts about what might cause the poor reception on the mobile, as compared to the HT?

The antenna gets good reviews, but perhaps at $27 I should try something more like a Diamond, etc.

73s. Dave/KC9MGX
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W8JX
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Posts: 13268




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« Reply #1 on: March 19, 2018, 12:45:35 PM »

Have you actually check SWR on it? It could have a short in it.
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Ham since 1969....  Old School 20wpm REAL Extra Class..
AI7PM
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Posts: 8




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« Reply #2 on: March 19, 2018, 01:36:46 PM »

Have you actually check SWR on it? It could have a short in it.

That ^^^^^^^.   Amateur radio isn't plug and play.
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N8EKT
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Posts: 689




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« Reply #3 on: March 19, 2018, 07:38:17 PM »

On 440 a HT on a duck can easily work better than a outside antenna especially with the small lossy coax used on the small magnet antennas for HTs.
But neither of those radios has a very selective front end so putting a antenna on them that picks up more signal can also bring in more interference which may cause desense at times.
Most cheap "dual band" mobile antennas are merely 2meter 1\4 wave whips being marketed as dual band.
If you want maximum performance, the Larsen NMO270B
would be the best choice.
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W8JX
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Posts: 13268




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« Reply #4 on: March 20, 2018, 04:08:59 AM »

On 440 a HT on a duck can easily work better than a outside antenna especially with the small lossy coax used on the small magnet antennas for HTs.

I have NEVER seen this in using HT's for  nearly 40 years!!!!
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Ham since 1969....  Old School 20wpm REAL Extra Class..
W1VT
Member

Posts: 3358




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« Reply #5 on: March 20, 2018, 07:48:49 AM »

You may have conducted noise on the 12 volt power cable. 

Zak W1VT
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KC9MGX
Member

Posts: 14




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« Reply #6 on: March 20, 2018, 07:55:31 AM »

Hey folks,

So, I've been riding around with the HT (Baofeng UV-5R w/ Hyperion 2.5" gummy stub) and the mobile (BTECH UV25x2 w/ Nagoya UT72 19" whip) tuned to the same frequencies (both watch 146.91 and 145.13 repeaters here in MKE). In a longer test I've seen that they tend to pick up at mostly overlapping and occasional complementary moments, like the ones in my OP. But in all honesty, I get pretty weak reception here on Milwaukee's North Shore, right along the lakeside bluff.

What I think is that over here on the northeast side of MKE, right along lake Michigan, we get refracted signals from repeaters further west and south. As I move along the lake with buildings, highways, hills, and forests between me and the repeaters the refracted signals hit both, or occasionally one or the other antenna.

Checking the SWR on the mobile antenna is a good idea. I appreciate the upgraded antenna suggestion, too. I may install one of those on a hood lip mount to my Cherokee (BTW: why don't lip mounts need direct metal contact for a ground plane?).

Thanks and best, Dave KC9MGX
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KB2WIG
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Posts: 630




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« Reply #7 on: March 20, 2018, 08:22:45 AM »



They do, they dont work well, but they do work.

Do they make a 2m Isotron ??

KLC
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EXTRALight  1/3 less WPM than a Real EXTRA
KC9MGX
Member

Posts: 14




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« Reply #8 on: March 20, 2018, 11:08:35 AM »

On 440 a HT on a duck can easily work better than a outside antenna especially with the small lossy coax used on the small magnet antennas for HTs.

I have NEVER seen this in using HT's for  nearly 40 years!!!!

I will say that for sure the coax on the mag mount unit does not inspire confidence.
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W8JX
Member

Posts: 13268




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« Reply #9 on: March 20, 2018, 11:17:37 AM »

I will say that for sure the coax on the mag mount unit does not inspire confidence.

Rubber ducks are basically negative gain antennas. Any loss from coax is easily over come by gain of antenna and its location on top of car. If it here worse there is a short in antenna or coax somewhere. SWR check would confirm this.
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Ham since 1969....  Old School 20wpm REAL Extra Class..
K0UA
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Posts: 4612




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« Reply #10 on: March 20, 2018, 11:49:47 AM »

Quote
If you want maximum performance, the Larsen NMO270B would be the best choice.

^^  This. 
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73  James K0UA
ARRL Missouri Technical Specialist
SOFAR
Member

Posts: 1477




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« Reply #11 on: March 20, 2018, 12:45:12 PM »

Quote
If you want maximum performance, the Larsen NMO270B would be the best choice.

^^  This. 

I'd like to know if they're still a solid purchase since being acquired by Pulse Electronics, and manufactured in China.

A majority of the eham reviews talk about antennas that were purchased years ago.

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KC9MGX
Member

Posts: 14




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« Reply #12 on: March 20, 2018, 01:15:21 PM »

Quote
If you want maximum performance, the Larsen NMO270B would be the best choice.

^^  This.  

I'd like to know if they're still a solid purchase since being acquired by Pulse Electronics, and manufactured in China.

A majority of the eham reviews talk about antennas that were purchased years ago.

I was wondering the same thing!

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N8EMR
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Posts: 248




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« Reply #13 on: March 20, 2018, 04:31:56 PM »

get a big shirt pocket for your mobile? Wink Wink Wink Wink Wink Wink
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