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Antenna Sweeps


tweiss3
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I have the GP6 for my amateur rig. If performs much better on VHF than UHF. Works well for Amateur stuff, but not well for GMRS. I use use the GMRS version of the Comet 712 for use that.

I can perhaps take some screen hots of the VNA this evening and post them if someone does not get them for you before then.


Michael
WRHS965
KE8PLM

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20 minutes ago, mbrun said:

I have the GP6 for my amateur rig. If performs much better on VHF than UHF. Works well for Amateur stuff, but not well for GMRS. I use use the GMRS version of the Comet 712 for use that.

I can perhaps take some screen hots of the VNA this evening and post them if someone does not get them for you before then.


Michael
WRHS965
KE8PLM

Thanks. Both cut off their claimed performance at the edge of the band. I suspect the X300a would be better, as the dip on the GP6 looked pretty sharp.

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Thanks. Both cut off their claimed performance at the edge of the band. I suspect the X300a would be better, as the dip on the GP6 looked pretty sharp.

Here are the sweeps of my GP6 off a freshly calibrated VNA.


43c19573c40f1e6623548e7aee26abff.jpg
1571d657095e372d4bc25dcc960ee967.jpg
5d23434b121bb60d4c1543fd70f33277.jpg

GMRS band is tolerable. Not as bad as I recalling.

Good luck.


Michael
WRHS965
KE8PLM
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12 hours ago, mbrun said:


Here are the sweeps of my GP6 off a freshly calibrated VNA.


43c19573c40f1e6623548e7aee26abff.jpg
1571d657095e372d4bc25dcc960ee967.jpg
5d23434b121bb60d4c1543fd70f33277.jpg

GMRS band is tolerable. Not as bad as I recalling.

Good luck.


Michael
WRHS965
KE8PLM

That really isn't bad at all, actually quite comparable to the commercial UHF antenna I have. Actually looks similar to the Tram1480 I have for my base station. Thanks for the input.

 

 

Anyone have the X300a they could sweep?

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