Monday, March 25, 2019

LiFePO battery purchase for FT-818

I recently purchased this battery to go with a FT-818 that I have been playing with the last month. It is a Bioenno Model# BLF-1203A which has a 12 volt 3 ah rating. Hamsource was having a Facebook special on it for $55. Hamsource webpage

I decided to test it out on a West Mountain CBA IV battery analyzer mainly so I could see the discharge curve everyone brags about on these batteries. Below are the results. You can see that the discharge is much flatter than a lead-acid battery and the steep drop off at the end of life. At the end of the test you can see the voltage dropped to zero! That appears to be a function of the battery management board built into the battery module. As soon as the charger was plugged back in the battery woke up. 

Sunday, February 24, 2019

Carolina in my mind

The Carolina QSO Parties

Sorry, I couldn't resist using this title as this weekend was both the South and North Carolina QSO Parties. I didn't do much score wise for these events but it was nice to get back to working QSO Parties from home.

Operation was mainly 40 meters and I was hoping for more on 80 meters but I may need to check out my vertical antenna. It has never been very good on 80 but something seems worse now so it is time for some antenna maintenance. The antenna is a 33ft antenna from DX Engineering and I will be looking into adding 10 feet to it and maybe install my LDG-100 remote tuner.

South Carolina QSO Party (Saturday)

CREATED-BY: N3FJP's SCQP Contest Log (Out of State) 2.3
QSO:  7182 PH 2019-02-23 2008 ND9E      59  IL       NC8N      59  AIKE
QSO:  7186 PH 2019-02-23 2010 ND9E      59  IL       W9DC      59  OCON
QSO:  7191 PH 2019-02-23 2013 ND9E      59  IL       WN4AFP    59  GVIL
QSO:  7244 PH 2019-02-23 2017 ND9E      59  IL       KF4GDX    59  PICK
QSO:  7036 CW 2019-02-23 2027 ND9E      599 IL       N4CW      599 GRWD
QSO:  7041 CW 2019-02-23 2029 ND9E      599 IL       N4AW      599 ANDE
QSO:  3848 PH 2019-02-24 0036 ND9E      59  IL       KI4MJK    59  CKEE
QSO:  3864 PH 2019-02-24 0038 ND9E      59  IL       WW4SF     59  DORC

North Carolina QSO Party (Sunday)

CREATED-BY: N3FJP's NCQP Contest Log (Out of State) 3.0
QSO:  7225 PH 2019-02-24 2033 ND9E              IL     K4MN              CUM
QSO:  7187 PH 2019-02-24 2055 ND9E              IL     WB4QOC            CAB
QSO:  7180 PH 2019-02-24 2058 ND9E              IL     N4ATJ             GAS
QSO:  7044 CW 2019-02-24 2100 ND9E              IL     K4MN              CUM
QSO:  7041 CW 2019-02-24 2101 ND9E              IL     KG4IKQ            MCD
QSO:  7037 CW 2019-02-24 2104 ND9E              IL     W4NC              FOR
QSO:  7070 PH 2019-02-24 2109 ND9E              IL     KK4NHC            AVE
QSO:  7070 RY 2019-02-24 2112 ND9E              IL     KK4HEG            GAS
QSO:  7070 RY 2019-02-24 2118 ND9E              IL     W4SDJ             CHE
QSO:  7179 PH 2019-02-24 2124 ND9E              IL     W4BBT             FRA
QSO:  7190 PH 2019-02-24 2128 ND9E              IL     W4SNC             IRE
QSO:  7229 PH 2019-02-24 2132 ND9E              IL     W4BFB             MEC
QSO:  7242 PH 2019-02-24 2133 ND9E              IL     W4DW              ORA
QSO:  3852 PH 2019-02-25 0037 ND9E              IL     K8AC              ASH
QSO:  3857 PH 2019-02-25 0038 ND9E              IL     W4DW              ORA
QSO:  3882 PH 2019-02-25 0047 ND9E              IL     W4YK              HEN
QSO:  3536 CW 2019-02-25 0049 ND9E              IL     N3CZ              BUN
QSO:  3545 CW 2019-02-25 0054 ND9E              IL     K4MN              CUM
QSO:  3547 CW 2019-02-25 0055 ND9E              IL     K4BSK             MEC

Thursday, January 31, 2019

Winter Field Day 2019

WFD 2019 - ND9E

We went with the same basic plan as last year meaning we would set up at the same location with the antennas basically the same as last year. The second year at the same location goes so much easier as you know which trees supported the Windom antenna as an example. We went with the 10-80m Windom and the 80 meter loop as our main antennas.

Friday night we got the pull strings in the trees and the camper leveled and plugged in so it could warm up. 

On Saturday we had 2 people available to start at 8AM by getting the Windom antenna in the air. We tried an untested inverted L as a multi-band antenna with the primary goal being a way to get on 160 meters. I use this same balun on my inverted L at home but there is definitely a sweet spot when tuning it and we did not have time to mess with it any longer so that will get tested once it warms up. Plan B was to put up the 80 meter loop we used last year. After the antennas were up we set up the generator, access point, and shelters. We added another ice fishing tent this year as it should be easier to heat. We also put thick moving blankets on the concrete pad first before putting the shelter down. This seemed to greatly help the heating issue and I know my feet were warmer this year! The shelter you see on the left held 2 operators and the one on the right was for a single operator. We had the normal PC issues just before the contest started such as N1MM needed updated again, working through the error messages and finally getting the section entries to be accepted. We got on the air about 20 minutes late but we were off and running. One operator working on phone contacts while the other one knocked out some multiplier hunting. 

We got some relief in the evening when AE0TT came to help out and he had some good runs on 80m phone. By Midnight pretty much folks were in bed for the night. We still need to solve the night shift operator issue but I am not sure there is enough activity to keep someone awake. 

Sunday morning I woke up to the sound of sleet hitting the camper which made it hard to get out of bed but things needed to get started again so we got up and started the generator and turned on the heat in the tents. AA0Z began operating while the eggs were cooking. 2 operators finished out the event and we started tearing down. My son Simon came to the park to help tear down antennas and tents plus he helped haul stuff back home. Thanks Simon!

AA0Z N1MM wifi access point below
(just plug it into power and let the laptops all sync up)

Final results

Operators AA0Z, KE0HXL, AE0TT, ND9E
22 CW contacts
374 Phone contacts
103 digital contacts
15 multipliers
1500 bonus points for emergency power
1500 bonus points for being outside
1500 bonus points for being away from home
Total claimed score was 23,070

Sunday morning indoor and outdoor temps below

AE0TT operating by the glow of the laptop screen