[TowerTalk] Cellphone signal boosters

Roger (K8RI) on TT K8RI-on-TowerTalk at tm.net
Fri Jul 28 00:54:11 EDT 2017

I tried that in my shop (metal lined) with the pickup inside and antenna 
on the roof. Never could get it to work. An HT behind the shop worked 
better (shop was between the HT and the repeater 6 miles away.

73, Roger (K8RI)

On 7/27/2017 Thursday 8:25 PM, Steve Maki wrote:
> On 7/27/2017 8:32 AM, Jim Thomson wrote:
>>      < When I was working on a cellular project in Haiti in the early 
>> 2000's,
>> <we installed a totally passive repeater system to improve coverage 
>> for the
>> <President's palace to tide us over while we worked to build a cell 
>> site for
>> <the purpose.  The passive system had a Yagi mounted on a wooden pole 
>> and
>> <pointed at the closest "donor" cell*.  The Yagi's coax feed then 
>> went to an
>> <omni antenna a few feet below the Yagi and behind it (in the Yagi's 
>> pattern
>> <null.)  Apparently this combo worked well enough that we had time to 
>> build a
>> <full minicell for the area and had no further complaints from Mr. 
>> Aristide's
>> <folks.
>> <73 de
>> <Gene Smar  AD3F
>> ##  passive repeater system !   Now that sounds like the ideal ticket.
>> 2 ants, and one short coax between em.
>> I assume kellys  remote cottage is for 2-4 months in the summer time, 
>> like
>> June to Sept.  Folks go to summer cottages to....get away from it all,
>> but still, phone service of some type, for emergencies is a must.
>> Jim  VE7RF
> Back in the olden days I tried that a few times and didn't have much 
> luck. We'd be installing a new cell site where ground level signals 
> from other sites were pitifully weak. Which is why we were installing 
> a new tower there I guess. Needing comms, we carried an 700 MHZ yagi 
> with us, and as soon as the tower went up, we'd slap that yagi up 
> there at 100' or so and search for the best Nextel signal, using a 
> direct connection to the phone (we had a modified phone with an 
> antenna jack).
> At 100' it was usually easy to get a reasonable signal. But there 
> never seemed to be enough radiated signal out of the ground omni to be 
> of much use as a repeater. If you connected the feedline directly to 
> our special phone, it was fine. But you could hold a regular Nextel 
> phone one inch from the omni repeater antenna, and it was of very 
> dubious value.
> It was disappointing.
> Nowadays, it's rare that I'm in a spot without usable signal level. I 
> carry both AT&T and Verizon phones. Usually I'm good on either 
> network, but in Michigan's U.P. for example, both carriers are needed 
> depending on location.
> -Steve K8LX
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Roger (K8RI)

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