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UHF, S and X-Band equipment etc
X Band RX Equipment
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<blockquote data-quote="s-band" data-source="post: 1151335" data-attributes="member: 407744"><p>Here's a brief history of the things I tried.</p><p></p><p>A milsat X band helical feed on the IRTE 1.5m with a Miteq LNA</p><p>[ATTACH]151607[/ATTACH]</p><p>Soon replaced by a scalar feed, squashed tube polariser, home made 1st stage LNA and 2nd stage Miteq LNA. This was based on 35mm pipe for Milsat.</p><p>[ATTACH]151609[/ATTACH]</p><p></p><p>1st generation of block down converter for Milsat only. Following the signal path from top left:</p><p>Input isolator, LNA modified to 7.5GHz centre frequency, splitter, filter, mixer, low pass filter, buffer amplifier. The LO at the bottom is a Gilat Ka LNB with the synth output changed to 9GHz.</p><p>[ATTACH]151608[/ATTACH]</p><p></p><p>Current head end, optimised for 8.45GHz but usable 7-9GHz. Based on 28mm pipe, cone feed matched to 0.8f/d of the 1.2m Prodelin dish, squashed pipe polariser, LNA as above, isolator on output not shown.</p><p>[ATTACH]151611[/ATTACH]</p></blockquote><p></p>
[QUOTE="s-band, post: 1151335, member: 407744"] Here's a brief history of the things I tried. A milsat X band helical feed on the IRTE 1.5m with a Miteq LNA [ATTACH alt="X_Feed_DSC1463s.jpg"]151607[/ATTACH] Soon replaced by a scalar feed, squashed tube polariser, home made 1st stage LNA and 2nd stage Miteq LNA. This was based on 35mm pipe for Milsat. [ATTACH alt="X_feed_lna_DSC1771s.jpg"]151609[/ATTACH] 1st generation of block down converter for Milsat only. Following the signal path from top left: Input isolator, LNA modified to 7.5GHz centre frequency, splitter, filter, mixer, low pass filter, buffer amplifier. The LO at the bottom is a Gilat Ka LNB with the synth output changed to 9GHz. [ATTACH]151608[/ATTACH] Current head end, optimised for 8.45GHz but usable 7-9GHz. Based on 28mm pipe, cone feed matched to 0.8f/d of the 1.2m Prodelin dish, squashed pipe polariser, LNA as above, isolator on output not shown. [ATTACH alt="X_headend_cone_LNA_view_DSC2788s.JPG"]151611[/ATTACH] [/QUOTE]
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