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GET /hyperkitty/api/list/[email protected]/email/RKBPYDBB4OEQ4S7FH4I5YUQYTXTBUDH4/?format=api
{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/RKBPYDBB4OEQ4S7FH4I5YUQYTXTBUDH4/?format=api", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api", "message_id": "CAF3DnKgadBWu+Zs4gX1_yedz0EZBwLDwZGjmnQo972qG6cvMEA@mail.gmail.com", "message_id_hash": "RKBPYDBB4OEQ4S7FH4I5YUQYTXTBUDH4", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/I4DFGMIZP5DFPER4OE77LWA33FZJXQM4/?format=api", "sender": { "address": "dan (a) post.com", "mailman_id": "8fbd55eb51ed4663a4067933c1d26387", "emails": "https://mailman.amsat.org/hyperkitty/api/sender/8fbd55eb51ed4663a4067933c1d26387/emails/?format=api" }, "sender_name": "Daniel Cussen", "subject": "Re: [amsat-bb] duplexer used as a filter", "date": "2015-07-28T08:48:49Z", "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/I4DFGMIZP5DFPER4OE77LWA33FZJXQM4/?format=api", "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "For waterproofing I normally use IP67 rated boxes. If you make any\nholes in one, all connectors need to be IP67 rated and used within\ntheir specifications for cables.\n\nI normally use M20 electrical cable compression glands for the coax,\nbut the connector needs to be fitted after putting through the gland.\nAlways make any holes in the bottom as suggested to stop water running\ndownwards along the cable\n\nTwo other ideas to stop condensation. One is to totally airtight seal\nthe box and use desiccant. This absorbs moisture in the air, however\nif air EVER gets in again, the desiccant will soak up completely then\nre-release the moisture again. The trick is to replace the desiccant\nevery time you open the box. Just keep a spare one in a hot place like\non top of a water heater. Some change colour from white to blue to\nindicate if they are full or not. Heating them for example in an oven\nremoves the moisture and allows them to re-absorb next time. This is a\nmethod used regularly in double glazing. The desiccant is placed in\nthe frames of the window normally behind an aluminum edging with holes\nin it. The inside of the window stays condensation free until there is\na break in the outer edge and the desiccant fills up.\n\nAnother method to stop condensation is to heat the inside of the box\ncontinuously. If it is a pre-amp with a voltage regulator then leave\nit powered up 24/7 and the wasted heat should keep any moisture\nairborne, although depending on the location you may want resistors or\nother wasteful heaters to keep the internal temperature always above\nambient outside temperature. A similar thing is done in large security\ncameras to stop the glass from ever fogging up. Similar to a rear\nwindow heater on a car.\n\nA lot of amateur outdoor equipment use low quality cases and\nwaterproofing. I found a barrel type PL259 connector can be good at\nstopping one damaged cable from allowing water to feed down a long\ncoax cable and damaging an entire length of cable. Where possible\nsolder or remove all connections/connectors so even a little corrosion\nwon't matter.\n\nUsing an IP67 case with a transparent lid is a good way to see if\nwater is gathering inside or if condensation is forming. Having an LED\non power inputs showing through a clear case is useful to show it is\npowered up or the heater is working. Cheap kitchen containers are not\ndesigned for outdoor use and the plastics crack under UV light.\n", "attachments": [] }