Which rocket lens ?
Which rocket lens ?
Hi Guys,
just getting ready to build my dual feed and plan on trying both a copper pipe reducer horn and a rocket lens on the end of the 22mm pipe.
Looking on Amazon there's a few reasonable priced rocket LNBs and the dielectric lens looks to be about 35mm diameter - I was wondering if there's an optimum Rocket model I should be looking for or would any one of the 35mm lens be ok ?
As ever, any guidance gratefully received.
just getting ready to build my dual feed and plan on trying both a copper pipe reducer horn and a rocket lens on the end of the 22mm pipe.
Looking on Amazon there's a few reasonable priced rocket LNBs and the dielectric lens looks to be about 35mm diameter - I was wondering if there's an optimum Rocket model I should be looking for or would any one of the 35mm lens be ok ?
As ever, any guidance gratefully received.
Re: Which rocket lens ?
The Red Eagle Blackbuster is probably the most used one and works very well. Unfortunately like many other LNBs they are in short supply at the moment so you may struggle to find one.
Re: Which rocket lens ?
Another option is the Venton EXL-S. These at least seem to be available from Germany but with high postage charges.
Re: Which rocket lens ?
Tim I can confirm that the Rocket Black Buster Lnb lens fits
22mm copper pipe perfectly.
22mm copper pipe perfectly.
Re: Which rocket lens ?
Has anyone designed lenses in CAD that can be 3D printed? a few of us on here have 3D printers and can't see why it wouldn't work.
I've been printing with CPE HG100 lately which is a modified version of PETG so should stand up to the outdoors better than PLA etc.
I've been printing with CPE HG100 lately which is a modified version of PETG so should stand up to the outdoors better than PLA etc.
Re: Which rocket lens ?
You may like to try the AB LNB 01 as shown below, currently available on Ebay for £4.95 + postage. I have tried the feed lens on my dual-band G0MJW feed and it works.
73
Jen
73
Jen
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- AB01.jpg (1.3 MiB) Viewed 6490 times
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- AB01 disassembled.jpg (1.75 MiB) Viewed 6490 times
Last edited by g4hiz on Sat Apr 20, 2019 8:15 am, edited 1 time in total.
Re: Which rocket lens ?
That looks to be a PLL LNB ?
Re: Which rocket lens ?
It is a PLL type. The crystal is 25MHz.
Re: Which rocket lens ?
3D printing could produce something that looks like a dielectric lens but almost certainly wouldn’t work like one.
The dielectric constant of the material used will be very critical so different plastics or even different batches of the same plastic could vary. Even if you managed to measure and reproduce the exact formulation used in the commercial lenses the layered structure of a 3D printed lens would most likely affect the results.
The commercial lenses are actually made in two interlocking parts. I wouldn’t be surprised if the dielectric constant of the two plastics is different and the transition between them is also part of the design.
The dielectric constant of the material used will be very critical so different plastics or even different batches of the same plastic could vary. Even if you managed to measure and reproduce the exact formulation used in the commercial lenses the layered structure of a 3D printed lens would most likely affect the results.
The commercial lenses are actually made in two interlocking parts. I wouldn’t be surprised if the dielectric constant of the two plastics is different and the transition between them is also part of the design.