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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
AV-Comm Polariser + Zinwell lnbf
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<blockquote data-quote="s-band" data-source="post: 1008366" data-attributes="member: 407744"><p>No tax, below limit and/or declared as returned goods</p><p>The good one has a piece of absorber on the 2nd stage. I tried adding some to the duff one, it didn't do much. The duff one has a low frequency oscillation which I don't have time or inclination to track down that's what stops it working for most things. The mixer/oscillator design is not very nice. Changes in match on the input alter the LO frequency and it is possible to stop the oscillator if a mis-match is presented to the input (sticking a finger up it in a critical position). This applies to good and bad. However, that doesn't stop it working under normal conditions.</p><p>The pics show the clean LO on the good one and the comb on the bad. The photo has the good one on the left.</p><p></p><p>[ATTACH]104671[/ATTACH] [ATTACH]104670[/ATTACH] [ATTACH]104672[/ATTACH]</p></blockquote><p></p>
[QUOTE="s-band, post: 1008366, member: 407744"] No tax, below limit and/or declared as returned goods The good one has a piece of absorber on the 2nd stage. I tried adding some to the duff one, it didn't do much. The duff one has a low frequency oscillation which I don't have time or inclination to track down that's what stops it working for most things. The mixer/oscillator design is not very nice. Changes in match on the input alter the LO frequency and it is possible to stop the oscillator if a mis-match is presented to the input (sticking a finger up it in a critical position). This applies to good and bad. However, that doesn't stop it working under normal conditions. The pics show the clean LO on the good one and the comb on the bad. The photo has the good one on the left. [ATTACH]104671[/ATTACH] [ATTACH]104670[/ATTACH] [ATTACH]104672[/ATTACH] [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
AV-Comm Polariser + Zinwell lnbf
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