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Mikrotik LDF Dish Size

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KV3T
KV3T's picture
Mikrotik LDF Dish Size

My neighbor was throwing out a 1 meter dish. Is there a practical limit to the dish size for the ldf 5ghz? Or is bigger better?

http://nextcloud.caseydiers.com/index.php/s/c8NGbprxxXQ5kGa

Also, pressure washing is very cathartic

http://nextcloud.caseydiers.com/index.php/s/mzgC9ALK8Dmbw5W

w6bi
w6bi's picture
Dish

"If some is good, more is better"  :-)   As long as you can get the LDF 5 at the focal point, you should be good to go.  That's a nice looking dish!

Orv W6BI

KV3T
KV3T's picture
Thanks!

Thanks!

K9CQB
K9CQB's picture
Bigger is usually better

KV3T,
Bigger usually means more gain due to higher directionality. This means the lobe of the signal has a narrower beamwidth (both vertical and horizontal).
The only negative side of having a larger dish is that it is harder to point successfully, especially vertical adjustment on offset parabolic dishes. Orv said it perfectly when he said the key is to make sure you get the face of the LDF-5 perfectly aligned in the focal point of the dish before you begin pointing it.

- Damon K9CQB​

K6OQK
K6OQK's picture
Bigger is usually better

Not only does a larger dish give you more gain because of a narrower beamwidth, but that narrower beamwidth can also act as blinders to reduce seeing signals off the side.  Sometimes I use a larger dish, not for additional gain, but to reduce interference from incoming signals off the main beam.

Burt, K6OQK

KV3T
KV3T's picture
The LDF doesn't quite sit

The LDF doesn't quite sit back as far as i had hoped, but it looks like it is 'close enough'? The tv feed horn that was on there before actually stuck out further.

It is definitely stuck in there far enough to be secure, I'm just not sure if that change in distance will cause any problems with the signals.

http://nextcloud.caseydiers.com/index.php/s/zWXcQpjYy4eL7gk

http://nextcloud.caseydiers.com/index.php/s/beNg8RkAgsDfbsr

http://nextcloud.caseydiers.com/index.php/s/wqejGaTq8pFoFgz

http://nextcloud.caseydiers.com/index.php/s/RBWKHATedBLfsJw

http://nextcloud.caseydiers.com/index.php/s/xNnqRQRwHbizSsM

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