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 Procomm P99

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NoMad
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NoMad


Call Sign : 26-CT-4253
Posts : 61
Times Thanked : 0
Join date : 2021-09-15
QTH or Location : Cambridge, Cambridgeshire
Equipment Used : CRT SS6900N, RTL-SDR Blog V3, Baofeng UV5R-3.

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PostSubject: Procomm P99   Procomm P99 Icon_minitimeMon Apr 25, 2022 2:46 pm

Hi all,

I was looking at the Procomm P99 antenna as an 'upgrade to my half-wave Di-Pole.

Its four sections, and with tuning rings.
Easy to set up and use.

[2.27 Kgs weight if anyone wonders, where a Sigma Dipole is 1.5 Kgs] so probably need another wall bracket.

My Question is, does the mast act as a ground plane, Is a vertical twig dependant on the mast - length - in anyway [besides holding it up.lol]

Would there be much difference on DX'ing ? Recieve and Transmit.

TIA.
73's.
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NoMad
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NoMad


Call Sign : 26-CT-4253
Posts : 61
Times Thanked : 0
Join date : 2021-09-15
QTH or Location : Cambridge, Cambridgeshire
Equipment Used : CRT SS6900N, RTL-SDR Blog V3, Baofeng UV5R-3.

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PostSubject: Re: Procomm P99   Procomm P99 Icon_minitimeSat May 21, 2022 6:32 pm

Really, no one has an opinion ?
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SangueG
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SangueG


Call Sign : 26-CT-3971 / 2E0LMI
Posts : 1183
Times Thanked : 68
Join date : 2021-01-30
QTH or Location : Cirencester, Gloucestershire
Equipment Used : Little radios, home-made antennas

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PostSubject: Re: Procomm P99   Procomm P99 Icon_minitimeSat May 21, 2022 9:38 pm

Hi Andy. I haven't used one, so would be wrong for me to voice much of an opinion. Others here have used though. HERE's one thread on it if by chance you haven't spotted it.

I believe it to be an end fed half wave, and being so the length of pole it is mounted on should make very little difference to how it performs.. except of course that a longer pole getting it higher will almost certainly help. I will stand corrected though if others who have experience using say otherwise.

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https://station-master.online/2E0LMI
RadioWavez
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Call Sign : 2-CT-210
Posts : 45
Times Thanked : 7
Join date : 2022-01-01
QTH or Location : Lexington, Kentucky
Equipment Used : Alinco DX-SR8

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PostSubject: Re: Procomm P99   Procomm P99 Icon_minitimeWed May 25, 2022 4:01 pm

Andy & All,
Usually, a ground plane is perpendicular-ish to the vertical element. The tower would have minimal effect as a ground plane. I am assuming you have mounted your Sigma dipole also in a vertical position.
The only real difference between these two antennas is the location of the feed point. Performance between the two should be similar. I don't think the P99 would be an 'up-grade' unless you added a ground plane to it. Either as the add-on kit or adding your own DIY bit of kit.
2CT210

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Marc
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Call Sign : 2-CT-224
Posts : 12
Times Thanked : 3
Join date : 2022-08-18
QTH or Location : Mound, MN
Equipment Used : Galaxy 959, President McKinley 2, Procomm PT99
Age : 61

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PostSubject: Re: Procomm P99   Procomm P99 Icon_minitimeMon Aug 29, 2022 9:16 pm

I've owned a Procomm PT99 the past year and have had it up on 2 different steel pipe masts.  The first being about 25 feet long and off the ground, the second recently about 8 feet long mounted on the roof.  Neither mast has made any difference at all in tuning, so the mast makes no difference and does not act as a ground plane.  There is a ground plane kit for this antenna.  Procomm and others (Walcott Radio here in the US) claim a 30% improvement in performance as the ground plane kit is supposed to lower the angle of radiation.  I am using the recommended ground plane kit and it seems to work better using it vs. not using it.  Overall the antenna is very easy to tune, is light weight, and does not require anything real heavy duty to mount it.

My 2 cents worth
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