Altimeters: Comparison guide

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michaelrmonteith

Active Member
Great chart. It's my way of thinking to sort out what features I want and which fits the bill. Thanks Now it's added many more questions. Is there a detailed description of some of the terms? I know, more information. But looking at the pop-up on the Tele - telemetry output port on altimeter as an example. What does it mean? Not expecting an answer here but showing that some of us need a little more explanation. For that and some of the recorded output. Maybe just a page of terms and explanation might help to go along with it.

Maybe the option to get an Excel version. That way I can hide lines for altimeters I know don't fit my needs and narrow it down. That or maybe on the guide a way to hide or turn off lines.

Thanks for the great work.

Michael

azzie

Well-Known Member
Michael,

Many rocket altimeters have more features than an average rocketeer needs, especially the ones from premium class. I will add better descriptions, but the best way to learn about features is to click on "datasheet" link and read altimeter manual.

Telemetry output is ability of altimeter to send telemetry in real-time out of its serial port, usually 5 to 20 times per second. It can be connected to a radio transmitter for broadcasting, microprocessor for real-time analysis, and so on. I bet 99% of flights don't use it, so you probably won't need it either! but it's a nice feature for advanced users.

ksaves2

Michael,

Many rocket altimeters have more features than an average rocketeer needs, especially the ones from premium class. I will add better descriptions, but the best way to learn about features is to click on "datasheet" link and read altimeter manual.

Telemetry output is ability of altimeter to send telemetry in real-time out of its serial port, usually 5 to 20 times per second. It can be connected to a radio transmitter for broadcasting, microprocessor for real-time analysis, and so on. I bet 99% of flights don't use it, so you probably won't need it either! but it's a nice feature for advanced users.

Kenny

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ksaves2

Here is my screenshot from my LDRS Shreader flight. This is an eGGtimer Quantum .. the altimeter with a built in WiFi switch.

It tells me the battery voltage and if i have continuity on each channel when connected to my phone .. also can configure some basics like channel on/off , drogue delay (if any) and main altitude deployment with the phone.

I also used at LDRS to fire the charges in my L3 attempt deployment test performed onsite with the Quantums self test initiated from my phone.

DavieRockets

Well-Known Member
Great - Now from all you rocketeers who have used various models - What is your recommendation for getting started with dual deploy? The charts and specs tell one story - real life results tell another. If this is already a thread somewhere - please point to it - otherwise - what would you start with?

Thanks

Spence
My first DD altimeter was a Perfecflite MAWD. Since then I have tried other brands (Raven, Missile Works) but keep going back to buying more Perfectflites. Love the Stratologger CF. Why? Small footprint, easy to use, super reliable and for me, and I require separate terminals for Battery + and -, SWITCH, as well as MAIN and DROGUE. I use the Additive Aerospace universal sleds in all my latest builds. I do miss the on-board dip switches of the earlier MAWD model though. I recently tried the Missileworks RRC2+ because it has the dip switches. However it is larger, requires a proprietary Additive Aerospace sled which fits no other altimeters, has no SWITCH terminal and has REALLY long audio delays and pauses when booting up in my opinion. I guess I'm just used to the Perfectflites.

rharshberger

Well-Known Member
My first DD altimeter was a Perfecflite MAWD. Since then I have tried other brands (Raven, Missile Works) but keep going back to buying more Perfectflites. Love the Stratologger CF. Why? Small footprint, easy to use, super reliable and for me, and I require separate terminals for Battery + and -, SWITCH, as well as MAIN and DROGUE. I use the Additive Aerospace universal sleds in all my latest builds. I do miss the on-board dip switches of the earlier MAWD model though. I recently tried the Missileworks RRC2+ because it has the dip switches. However it is larger, requires a proprietary Additive Aerospace sled which fits no other altimeters, has no SWITCH terminal and has REALLY long audio delays and pauses when booting up in my opinion. I guess I'm just used to the Perfectflites.
The RRC2+ does not REQUIRE a proprietary sled, it is nice to have but the RRC2+ can be mounted just like any other baro altimeter. The Additive Aerospace sleds Missleworks sells are designed expressly for Missleworks, Landru ( Additive Aerospace) sells sleds of similar design for other altimeters on his website. Not having a seperate switch terminal really isnt a deal breaker, since by putting a switch on one leg of the battery wire suffices to completely isolate the battery from the alt and the e-matches.

I fly the RRC3, Eggfinder TRS, Eggtimer Quark, and soon the Eggtimer Quantum. I now use the Missleworks style screw switches exclusively.

DavieRockets

Well-Known Member
The RRC2+ does not REQUIRE a proprietary sled, it is nice to have but the RRC2+ can be mounted just like any other baro altimeter. The Additive Aerospace sleds Missleworks sells are designed expressly for Missleworks, Landru ( Additive Aerospace) sells sleds of similar design for other altimeters on his website.
To clarify, All my altimeters fit on any of Additive's universal sleds EXCEPT the Missile Works altimeters. I have Additive sleds in all sizes and can mount single or mixed models/brands of altimeters on any sled except for Missile Works altimeters. I therefore had to buy additional Missile Works sleds from Missile Works which I consider a waste of money, switches and space. Jim makes a good product. The Missile Works RRC2+ just doesn't work for my needs and preferences that's all.

Thanks

plugger

Well-Known Member
Kenny, let me know if there was anything you would like to improve n how the Raven works... I am working on a Java version but the windows FIP has a lot to reproduce...
Just to threadjack, Kevin, please don't stop with the standard FIP development when you get the Java version up and running. I prefer to not use Java if at all possible.