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<blockquote data-quote="s-band" data-source="post: 1042416" data-attributes="member: 407744">I tried a very offset feed on the 1.5m prime with some success on L band (25 degrees) but there is a lot more signal.&nbsp; Don't go&nbsp; to the trouble of making a&nbsp; proper fixing to start with. It's easy enough to use a tripod and clamp to play with a 2nd feed. I think that you will be lucky to get consistent Alphasat C band reception on a 1.2m, even with the feed at the focus but it is worth a go. I'd get yourself a C band LNBF (PLL for stability) and an offset feed. It seems that Titanium C1-PLL LNB sales are now only from the US.&nbsp; Aliexpress is cheap for feedhorns if you don't mind waiting e.g <a href="https://www.aliexpress.com/item/Free-shipping-100-aluminum-Conical-scalar-ring-65mm-C-Band-LNB-holder/32847779678.html" target="_blank">Free shipping 100% aluminum Conical scalar ring &amp; 65mm C Band LNB holder-in Satellite TV Receiver from Consumer Electronics on Aliexpress.com | Alibaba Group</a>As has been said, the Prodelin probably has an f/d of 0.8. I have found that normal (0.6 f/d) feeds work OK (on Ku &amp; Ka bands) but using the correct one gains a dB or 2. Attached is a list of the various Prodelin dish dimensions with their f/d.&nbsp; However, since you have it, just try it. If you take the SDR and laptop out to the dish you can tweak it in real time.</blockquote>

[QUOTE="s-band, post: 1042416, member: 407744"] I tried a very offset feed on the 1.5m prime with some success on L band (25 degrees) but there is a lot more signal. Don't go to the trouble of making a proper fixing to start with. It's easy enough to use a tripod and clamp to play with a 2nd feed. I think that you will be lucky to get consistent Alphasat C band reception on a 1.2m, even with the feed at the focus but it is worth a go. I'd get yourself a C band LNBF (PLL for stability) and an offset feed. It seems that Titanium C1-PLL LNB sales are now only from the US. Aliexpress is cheap for feedhorns if you don't mind waiting e.g [URL="https://www.aliexpress.com/item/Free-shipping-100-aluminum-Conical-scalar-ring-65mm-C-Band-LNB-holder/32847779678.html"]Free shipping 100% aluminum Conical scalar ring & 65mm C Band LNB holder-in Satellite TV Receiver from Consumer Electronics on Aliexpress.com | Alibaba Group[/URL] As has been said, the Prodelin probably has an f/d of 0.8. I have found that normal (0.6 f/d) feeds work OK (on Ku & Ka bands) but using the correct one gains a dB or 2. Attached is a list of the various Prodelin dish dimensions with their f/d. However, since you have it, just try it. If you take the SDR and laptop out to the dish you can tweak it in real time. [/QUOTE]

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