Heading Down the Black Hole

emsflyer84

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Mar 22, 2012
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73
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Central NH
Hey guys,

I’ve got a TRX-1 from Whistler that I have set up to broadcast online. It’s working great. Here is my antenna situation. I started with one of those all-purpose / all-band PVC pipe home made deals from MaxxTenna on Ebay and 50’ of RG6 running to my roof. It worked well for what it was. There were some folks online who told me I was probably not getting peak performance from an antenna like that, and it was probably just a rubber duck or tin foil inside a pvc tube.

So, then came the upgrade. A Centerfire folded dipole tuned to VHF specifically. With a 300 to 75 ohm transistor. Same location, same cable.

Same performance... In fact, it seems like the dipole has more background noise and less clean audio being received. There was one frequency (digital vhf) that was being picked up with the MaxxTenna but the transmissions were not readable (digital distortion). I was hoping the new antenna would grab this frequency more clearly. It hasn’t yet. Same digital noise.

Now I’m looking again. I’m hoping someone can talk me off the ledge here. I live in a mountainous area and it’s possible that the one signal I’m looking for is a lost cause unless I have significantly more height. It’s possible that I am picking up everything I’m going to get at this point, regardless of the antenna.

So basically I’m just looking for general thoughts on the situation from others who have been in the same boat.

My antenna restrictions basically are that I have to be able to mount it on an existing 1” metal pole on my roof. And I’m trying to keep it as low profile as possible to keep the wife happy.

Believe it or not, I’m thinking about going back to the all-band homemade PVC thing!

Thanks guys.
 

emsflyer84

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Mar 22, 2012
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Central NH
Well, after some more playing around with location, the reception with the dipole seems to be improved.
 

ka3jjz

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Jul 22, 2002
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Bowie, Md.
Be more specific about where you are (town/city and county is fine- folks can look up your location in our db) and what is this one frequency you are trying to hear? ... Mike
 

emsflyer84

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Mar 22, 2012
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Central NH
Hey there, I’m in Wolfeboro, NH in Carroll County. I was trying to listen to Conway PD, also in Carroll County. It’s strange, I won’t hear anything on their freq for days and they out of the blue I hear a few minutes of transmissions crystal clear, like we’re in the same town.
 

jim202

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Mar 7, 2002
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2,666
Location
New Orleans region
If your looking for anything to listen to, you might try the 2 meter ham band and the multitude of repeaters they have in your region. You can do a search on the Internet for sources such as the repeater book and other sources.
 

emsflyer84

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Central NH
Thanks, I'm actually working my my Amature license. We do have several active repeaters around here which is nice.
 

Ubbe

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Sep 8, 2006
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Stockholm, Sweden
I'm in a similar situation where a telescope antenna on a scanner gets my hardly anything to monitor. It's a huge difference for me going from a roof top 1/4 wave GP antenna to a vertical with a 9dB gain or a yagi with 13dB gain. Also using a low noise amplifier helps a lot, even when my coax has less than a 1dB loss. Even those low quality $10 CATV amplifiers made an improvement when I used my old crystal scanner in the 80's.

Not being able to receive any direct signals and only its reflections makes it extremly dependent of the wheather and time of year. Even when a nearby airplane pass by makes me hear signals that reflects from it that I normally do not hear.

To me in a weak signal situation at home makes antenna gain a very important factor.

/Ubbe
 

emsflyer84

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Mar 22, 2012
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Location
Central NH
Well guys, out of nowhere the frequency that wasn’t coming it at all or was only coming in digital before is working perfectly now. Like it’s right next door to my house.

I have no explanation. It’s like the scanner and antenna knew what I wanted to listen to. But it’s been several days now of clear transmissions. We’ll see if it keeps up.
 

DJ11DLN

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Mar 23, 2013
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Mudhole, IN
Well guys, out of nowhere the frequency that wasn’t coming it at all or was only coming in digital before is working perfectly now. Like it’s right next door to my house.

I have no explanation. It’s like the scanner and antenna knew what I wanted to listen to. But it’s been several days now of clear transmissions. We’ll see if it keeps up.
There could actually have been a problem with that station. Our instinct here is to start looking for problems with our equipment or programming when things twang out of tune but things do get out of whack on the other end sometimes.
 

trentbob

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Feb 22, 2007
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2,223
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Bristol, Pa.
Well guys, out of nowhere the frequency that wasn’t coming it at all or was only coming in digital before is working perfectly now. Like it’s right next door to my house.

I have no explanation. It’s like the scanner and antenna knew what I wanted to listen to. But it’s been several days now of clear transmissions. We’ll see if it keeps up.
A lot of smart people here to help you, wish we knew what you were trying to listen to. Maybe I missed it
 

WB9YBM

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May 6, 2019
Messages
444
Location
Niles, IL
I'm in a similar situation where a telescope antenna on a scanner gets my hardly anything to monitor. It's a huge difference for me going from a roof top 1/4 wave GP antenna to a vertical with a 9dB gain or a yagi with 13dB gain. Also using a low noise amplifier helps a lot, even when my coax has less than a 1dB loss. Even those low quality $10 CATV amplifiers made an improvement when I used my old crystal scanner in the 80's.
yeah, the telescopic antennas on the radios--at least for me--is just a "start-up" type of approach. For optimum reception the antennas still need to get outside away from the "ground clutter".
 
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