Search String: Display: Description: Sort:

Results:

References: [ +from:mark@alignedsolutions.com: 225 ]

Total 225 documents matching your query.

161. Re: [VHFcontesting] Rover Battery Questions (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Thu, 20 Dec 2018 09:22:06 -0800
Sorry I hit send by mistake before I was finished my last email. Some takeaways for me: -If I decide to buy another vehicle that I plan to rove from I expect I will look inquire about various vehicle
/archives//html/VHFcontesting/2018-12/msg00032.html (9,269 bytes)

162. Re: [VHFcontesting] Rover Battery Questions (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Thu, 20 Dec 2018 09:54:24 -0800
Re the life of SLI batteries for vehicles. I used to believe that if I changed my batteries every five years I would be almost guaranteed of not having any battery issues. Often when replacing batter
/archives//html/VHFcontesting/2018-12/msg00033.html (13,019 bytes)

163. Re: [VHFcontesting] Rover Battery Questions (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Thu, 20 Dec 2018 13:12:10 -0800
Re Subaru's... If anyone owns a Subaru Forester and has measured the charging and float voltages with the engine running I wouldn't mind chatting off list.. I'm glad to hear lots of Subaru owners use
/archives//html/VHFcontesting/2018-12/msg00036.html (12,362 bytes)

164. Re: [VHFcontesting] Rover Battery Questions (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Fri, 21 Dec 2018 10:20:57 -0800
Nice post. I'll just add that if I was starting with a "clean sheet of paper" I'd take a long look at using LiFePO4 batteries as opposed to sealed lead acid batteries in the cab of my truck. In my ex
/archives//html/VHFcontesting/2018-12/msg00040.html (12,918 bytes)

165. Re: [VHFcontesting] 1296 Digital (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Tue, 15 Jan 2019 10:12:49 -0800
I would generally agree with using JT65 (sub mode C) on 1296. That has worked ok for me in the past for long haul terrestrial use on 1296. That being said I'd probably be inclined to practice sending
/archives//html/VHFcontesting/2019-01/msg00023.html (9,864 bytes)

166. Re: [VHFcontesting] FT8 contest frequencies for 144, 222, 432, 1296 (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Tue, 15 Jan 2019 17:30:53 -0800
In my experience in South West VE7 Land and the PNW during contests SSB / CW activity on 144 MHz generally seems to go up from 144.200 in 10 KHz steps. I realize in an area where significant SSB/CW a
/archives//html/VHFcontesting/2019-01/msg00029.html (12,387 bytes)

167. Re: [VHFcontesting] FT4 Mode (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Thu, 2 May 2019 09:59:26 -0700
It is interesting to me that the new JT modes seem to be emphasizing speed. From my perspective I view the digital modes as a means of completing qso's that can't be done with traditional analog mode
/archives//html/VHFcontesting/2019-05/msg00003.html (11,265 bytes)

168. Re: [VHFcontesting] FT4 Mode (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Thu, 2 May 2019 15:28:14 -0700
I'm thinking receiver AGC (if it is used) and or the dynamic range of typical "sound cards" may lead to very weak signals not being decoded if there are very strong signals present at the same time
/archives//html/VHFcontesting/2019-05/msg00017.html (13,159 bytes)

169. Re: [VHFcontesting] FT4 Mode (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Thu, 2 May 2019 16:17:37 -0700
I am glad someone else agrees with me about the potential effects of AGC in this context (: 73 Mark S VE7AFZ mark@alignedsolutions.com 604 762 4099 _______________________________________________ VHF
/archives//html/VHFcontesting/2019-05/msg00020.html (15,365 bytes)

170. Re: [VHFcontesting] Digital Modes (FT8) in January 2019 Contest (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Wed, 19 Jun 2019 16:04:22 -0700
I'm still un decided about the digital mode issue for VHF and up contesting. I like the process gain that the digital modes can provide for making contacts under difficult conditions and or exploitin
/archives//html/VHFcontesting/2019-06/msg00091.html (14,454 bytes)

171. Re: [VHFcontesting] Digital Modes (FT8) in January 2019 Contest (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Wed, 19 Jun 2019 16:42:41 -0700
Well they may not be "magic" but in my experience digital modes at times do seem to enable qso's that would be difficult or perhaps even impossible with traditional analog modes. For example I recall
/archives//html/VHFcontesting/2019-06/msg00095.html (12,941 bytes)

172. Re: [VHFcontesting] Digital Modes (FT8) in January 2019 Contest (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Thu, 20 Jun 2019 07:53:28 -0700
There have been some nice exchanges of ideas so far in this thread. The irony for me about the move to FT8 is that in practice I seem to struggle more to make FT8 contacts on 50 MHz from remote place
/archives//html/VHFcontesting/2019-06/msg00106.html (14,090 bytes)

173. [VHFcontesting] Mix 31 or 43 ferrite material for use at 50 MHz ? (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Sun, 21 Jul 2019 07:37:26 -0700
Hi: I'm curious if anyone has any thoughts about the relative merits of using mix 31 or mix 43 ferrite snap on cores for pro active use on interconnection cables at 50 MHz. Over the years I have used
/archives//html/VHFcontesting/2019-07/msg00036.html (7,217 bytes)

174. Re: [VHFcontesting] Mix 31 or 43 ferrite material for use at 50 MHz ? (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Sun, 21 Jul 2019 09:23:46 -0700
Thanks that is helpful. My use case is more along the lines of pro actively putting ferrite cores on USB, audio and other similar cables that are used in a typical portable 50 MHz station but I suspe
/archives//html/VHFcontesting/2019-07/msg00038.html (10,955 bytes)

175. Re: [VHFcontesting] FT8 contest mode incompatibly (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Wed, 24 Jul 2019 15:10:01 -0700
After reflecting a bit on a recent back country grid activation in an area known for Grizzly bears I do see some more merit in modes that don't require a lot of operator involvement. Initially during
/archives//html/VHFcontesting/2019-07/msg00064.html (13,068 bytes)

176. [VHFcontesting] Short 70cm mount 70 cm yagi antennas (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Mon, 5 Aug 2019 08:51:25 -0700
Hi: I'm curious does anyone have any recent experience with 70 cm antennas with a boom length of 6 feet or less that are centre mounted ? I'm looking for something light for backpacking that can be s
/archives//html/VHFcontesting/2019-08/msg00005.html (7,026 bytes)

177. Re: [VHFcontesting] Why not ask? (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Mon, 5 Aug 2019 12:21:10 -0700
Over the last five years or so that I have been moderately seriously engaging in VHF and up contesting I have yet to decide on a single approach to "running the bands" or not. I usually don't "run th
/archives//html/VHFcontesting/2019-08/msg00014.html (11,928 bytes)

178. Re: [VHFcontesting] Changing from WSJT to SSB... (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Tue, 17 Sep 2019 20:39:46 -0700
Some radios may also require an additional step to mute and un mute the microphone when switching between data modes and ssb. Not a huge issue but one more thing to worry about and it can be easy to
/archives//html/VHFcontesting/2019-09/msg00038.html (9,987 bytes)

179. Re: [VHFcontesting] Changing from WSJT to SSB... (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Wed, 18 Sep 2019 10:54:32 -0700
Interesting.. Back when I was more interested in WSJT I briefly ran two laptops in my rover (for 50 and 144 MHz.) It didn't occur to me to try and run both bands on a single computer. I will revisit
/archives//html/VHFcontesting/2019-09/msg00051.html (12,538 bytes)

180. Re: [VHFcontesting] Changing from WSJT to SSB... (score: 1)
Author: Mark Spencer <mark@alignedsolutions.com>
Date: Wed, 18 Sep 2019 11:11:46 -0700
Or perhaps be able to work a station twice on one band using any two separate modes (ie. Digital, Phone or CW) That way operators who didn't want to run digital could run Phone and CW and still be ab
/archives//html/VHFcontesting/2019-09/msg00053.html (12,127 bytes)


This search system is powered by Namazu