George,
I used heat shrink to mount my BeeLine. It worked well. I built a sled for my nosecone. The base attached to a bulkhead on the bottom of the nosecone. I used an oak dowel; perpendicular to the base; with a small plywood sled, to mount the PCB. I attached the wire antenna to the dowel with heat-shrink. It held so well, that when the nylon post and wire-tie, securing the PCB broke, the antenna was severed from the PCB. So the antenna faired better than the PCB. If the antenna shared space with a parachute; I'd mount it against the airframe. Max From: altusmetrum [mailto:[email protected]] On Behalf Of George Shaiffer Sent: September 01, 2014 16:36 To: Altus Metrum Subject: Re: [altusmetrum] Selecting an antenna Clay and Max Have you considered using Heat Shrink tubing to protect the Antenna. The heat shrink should withstand the BP and protect the antenna. my 0.02 George Shaiffer > From: [email protected] <mailto:[email protected]> > To: [email protected] <mailto:[email protected]> > Date: Mon, 1 Sep 2014 15:13:03 -0700 > Subject: Re: [altusmetrum] Selecting an antenna > > Clay, > > Sounds like a good idea to me. I think if the antenna is mounted close to the airframe, rather than centered on a bulkhead; there would be room for parachutes and deployment charges. I would want a very rugged antenna; that would withstand the BP detonation. One could run wires to a charge ast the opposite end of the section with a parachute. That way; the parachute and Nomex blanket/bag would protect the antenna from the BP. > > Max > > -----Original Message----- > From: altusmetrum [mailto:[email protected]] On Behalf Of Clay and Carly Dunsworth > Sent: August 31, 2014 17:47 > To: Altus Metrum > Subject: Re: [altusmetrum] Selecting an antenna > > going to use something like this on the bulkhead. You can get them in almost any connector. So I am not really set on any particular connector. > it would be patch cable from the TM to the bulkhead. (I think I prefer > sma) > > http://www.datapro.net/products/sma-panel-mounting-coupler.html > > > yes the edge mount PCB sma, does work on the TM, at one time you could order them with that option. I really think this will put me back in the game. > > Wasn't sure if that short "wide band" duck would be worthless at altitude for packets. I think I can make any of those work. My longer... or oops my wifes, 4" darkstar, I fly a 8000ns (42")case in, the 14" whip would go nicely in the 1/4" bettween the motor and airframe!... but md rockets you cant do that. > > The other option would be stainless braided cable, like waltson trackers use. I cant seem to "make my own" antenna... I think I always get the length off just enough that the signal doesn't go very far. like no packets on the launch pad. I am able to verify ignitor continuity and battery during prep though and is nice. the stainless seems to stay strait fairly decently while being bendable... > I just use the becon rdf method. 20k abouts...nice tone.... > > -----Original Message----- > From: Kurt > Sent: Sunday, August 31, 2014 7:13 PM > To: Altus Metrum > Subject: Re: [altusmetrum] Selecting an antenna > > Clay, > > All those antennas have a different connector on them. When you make your final choice, were you going to pick a bulkhead connector pigtail? > > Something like this? > http://www.ebay.com/itm/cable-SMA-male-plug-to-SMA-female-jack-bulkhead-stra ight-RG174-6-pigtail-FPV-/281108847574?pt=US_Radio_Comm_Coaxial_Cables_Conne ctors <http://www.ebay.com/itm/cable-SMA-male-plug-to-SMA-female-jack-bulkhead-str aight-RG174-6-pigtail-FPV-/281108847574?pt=US_Radio_Comm_Coaxial_Cables_Conn ectors&hash=item4173649bd6> &hash=item4173649bd6 > > Nix the antennas from the baofeng radios as that would take a funky bulkhead connector. > The PL256 is pretty big.. > > You could consider an RP-SMA PC board connector but you'd have to order your bulkhead connector > accordingly: > http://www.ebay.com/itm/PCB-PC-Board-Panel-Mount-RP-SMA-Female-Straight-Sold er-Receptacle-Connector-New-/261127436055?pt=LH_DefaultDomain_0 <http://www.ebay.com/itm/PCB-PC-Board-Panel-Mount-RP-SMA-Female-Straight-Sol der-Receptacle-Connector-New-/261127436055?pt=LH_DefaultDomain_0&hash=item3c cc687717> &hash=item3ccc687717 > > As opposed to the female SMA the Beeline trackers use: > http://www.ebay.com/itm/5-Pcs-SMA-Female-Jack-Edge-Mount-PC-Board-PCB-Recept acle-Adapters-Connectors-New-/170703945976?pt=LH_DefaultDomain_0 <http://www.ebay.com/itm/5-Pcs-SMA-Female-Jack-Edge-Mount-PC-Board-PCB-Recep tacle-Adapters-Connectors-New-/170703945976?pt=LH_DefaultDomain_0&hash=item2 7bebf80f8> &hash=item27bebf80f8 > > I don't know what the edge of the PC board looks like on the telemetrum. > Can one solder an SMA socket like the ones above to the board? If so, would make cabling a little easier. > > I have one of those HH-S518 on an aft ebay bulkhead on a 3" Wildman I stretched the length and also used a 10" tube for the ebay. I painted the rocket metallic so I didn't get any packets at 10k' altitude. > I routed a connector to an SMA bulkhead socket so like you, the antenna would be exposed at apogee. > I haven't done a range test yet but I think it will be fine. The long antennas will likely get dorked when the rocket lands plus you gotta have a long sustainer to house them. > > WHOA........ I just found this one: > http://www.ebay.com/itm/Golden-Omni-TPEE-10W-UHF400-470MHz-Soft-Handheld-Rad io-Antenna-SMA-M-Male-/181384375740?pt=US_Radio_Comm_Antennas <http://www.ebay.com/itm/Golden-Omni-TPEE-10W-UHF400-470MHz-Soft-Handheld-Ra dio-Antenna-SMA-M-Male-/181384375740?pt=US_Radio_Comm_Antennas&hash=item2a3b 59edbc> &hash=item2a3b59edbc > > I'm going to order a couple. Looks promising even if the aft end hits, the wire spring will likely take it. Only thing is the all important range check. > > Kurt KC9LDH > > -------------------------------------------- > On Sun, 8/31/14, Clay and Carly Dunsworth <[email protected] <mailto:[email protected]> > wrote: > > Subject: [altusmetrum] Selecting an antenna > To: "Altus Metrum" <[email protected] <mailto:[email protected]> > > Date: Sunday, August 31, 2014, 12:37 PM > > My last flight pulled my whip antenna from my telemetrum, so I am going to put an sma connector on it. (it's a - patchwork fix I am rather good at by > now.) No use throwing away a 300.00 board cause of missing pcb trace... > > I have decided to mount an antenna on the aft bulkhead so it is exposed at the apogee. I came across this and wondered if anyone has used one of these? > http://www.ebay.com/itm/Dual-Band-VHF-UHF-SMA-M-145MHz-435MHz-Antenna-for-Ra dio-YAESU-VX-3R-VX-6R-VX-7R-/171297005651?pt=US_Radio_Comm_Antennas <http://www.ebay.com/itm/Dual-Band-VHF-UHF-SMA-M-145MHz-435MHz-Antenna-for-R adio-YAESU-VX-3R-VX-6R-VX-7R-/171297005651?pt=US_Radio_Comm_Antennas&hash=it em27e218e053> &hash=item27e218e053 > > The other option are these whips. they are sma or pl259(which might be better...?_ > > 14.4" > http://www.ebay.com/itm/High-Gain-14-4-SMA-Female-Dual-Band-Antenna-for-BAOF ENG-UV-5R-UV-5RA-UV-5RC/400638072298?_trksid=p2047675.c100005.m1851 <http://www.ebay.com/itm/High-Gain-14-4-SMA-Female-Dual-Band-Antenna-for-BAO FENG-UV-5R-UV-5RA-UV-5RC/400638072298?_trksid=p2047675.c100005.m1851&_trkpar ms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D23490%26meid%3D7a0bc47888e 3483f8b4e54b3899e943f%26pid%3D100005%26prg%3D10073%26rk%3D2%26rkt%3D6%26sd%3 D131180602475&rt=nc> &_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D23490%26meid%3D7a0 bc47888e3483f8b4e54b3899e943f%26pid%3D100005%26prg%3D10073%26rk%3D2%26rkt%3D 6%26sd%3D131180602475&rt=nc > > 7.56" > pl259 > http://www.ebay.com/itm/10W-uhf-400-470mhz-black-short-car-amateur-radio-ant enna-pl259-male-connector-/321260637411?_trksid=p2054897.l5665 > sma > http://www.ebay.com/itm/SMA-F-Dual-Band-UHF-Antenna-144-435MHz-for-BAOFENG-B F-666S-BF-777S-BF-888S-/131162111054?pt=US_Radio_Comm_Antennas <http://www.ebay.com/itm/SMA-F-Dual-Band-UHF-Antenna-144-435MHz-for-BAOFENG- BF-666S-BF-777S-BF-888S-/131162111054?pt=US_Radio_Comm_Antennas&hash=item1e8 9defc4e> &hash=item1e89defc4e > > cheap enough to buy all 3, but the stubby ducky would be good in my minimum diameter rockets that have almost zero room.. wondering if anyone has used them with any success and can advise on how they compare. > > > - > _______________________________________________ > altusmetrum mailing list > [email protected] <mailto:[email protected]> > http://lists.gag.com/mailman/listinfo/altusmetrum > > _______________________________________________ > altusmetrum mailing list > [email protected] <mailto:[email protected]> > http://lists.gag.com/mailman/listinfo/altusmetrum > > _______________________________________________ > altusmetrum mailing list > [email protected] <mailto:[email protected]> > http://lists.gag.com/mailman/listinfo/altusmetrum
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