38, breadboard power module

38, breadboard power module.

MB102 Breadboard Specification

  • Locking ON / OFF Switch
  • LED Power Indicator
  • Input Voltage: 6.5 V to 12 V (DC)
  • Output Voltage: 3.3 V / 5 V
  • Maximum Output Current: 700 mA
  • Power Rails 0 V, 3.3 V, 5 V on Breadboard
  • Two Groups of Header Pins
  • Size: 5.3 cm × 3.5 cm

The MB102 is a breadboard power supply module manufactured by the YwRobot Corporation in China. This module has the marking 545043 and MB V2 on the back of the printed circuit board (PCB). It provides dual 5 V and 3.3 V power rails, and has a multi-purpose female USB socket.

PowerBoard

Breadboard from Jaycar – CAT.NO: PB8820

The AMS1117 is a voltage regulator manufactured by Advanced Monolithic Systems. There are two regulators where one regulator establishes a 3.3 V rail, whilst another establishes the 5 V rail.

The input voltage through the barrel socket must be between 6.5 V and 12 V. The maximum output current to be 700 mA.

The device provides voltage rails to both sides on the breadboard. The yellow jumpers are used to select the voltage levels desired 3.3 V or 5 V regulated)

There are also header pins for tapping off voltages, using a cable or jumper wires.

The green power LED is connected to the output rail.

20082017 – VK3/VC-018 Mt Bunnyiong

 20082017 – VK3/VC-018 Mt Bunnyiong

VK1 SOTA activation day and a test run for miniHFPA HF Packer Amp.

ViewOfKX3HFPacker

Noticed the alerts going up for VK1 2017 Winter SOTA Party so decided to go to local summit to play SOTA one what looked like a reasonable day to go out. Propagation recently has been terrible for NVIS so decided it was time to test my newest toy, a miniHFPA HF Packer Amp. This is a 35 watt linear amplifier designed for portable operations. 

Decided to a to build a lightweight amplifier that can be backpacked to sites and be powered by a light weight LIPO 3S battery. Did look at commercial options. There are several out there a assembled Chinese unit and there are several kits available from eBay but appeared not to have adequate filters and lacking harmonic suppression. Glenn VK3YY describes building a unit based on W6JLs designs. There are a lot of kits around which would be more accurately described as harmonic generators. 

I went for the HF Packer kit. I have decided to build as much as I can and not being a electronics engineer more that happy to assemble kits. The new 35w kit was announced and I put my name down for a unit. Not the cheapest options but was expecting a unit that was well designed and meet the conditions of my licence

The build went well. The biggest issue I had was using unleaded solder. My fixed temp iron was not hot enough. A new variable iron fixed the issue and the build progressed. Once completed had issues completing the testing process. The issue came down to incorrect marking of the RF ports. Once addressed (Thanks David) the device leapt into action.

So going from 5w to 35w output is a gain of 8.45dB. Given 6dB is a S point expecting an additional 2 sS points for my signal reports. VK7CW and VK2YW gave me a 599 with the amp in use.Off top a great start. Later without the amp in use I received a 559 from VK2WP. None of the contacts were soliciting reports as my CW is only good for making contacts not setting up experiments. Pre roll over SSB contact with VK1CT received 59 and post received 45. No one described poor signal so very happy with results.    

At 717grams it won’t be a frequent addition to SOTA activations but when conditions are not good and the trek supports the additional unit and battery 35W it will be available.

The 4500mAh 3S 30C LIPO was at 80% after hour of use. Time for new batteries so will be going for a 2500/3000 mAh unit. 

So the next is to develop a suitable antenna. Used a trapped 20/40 unit based on SOTABeams 100w traps for this activation.This unit is too heavy for SOTA however so looking at options.The AMP is rated at 35W for 60/40 & 30/20m bands. Will need a resonate antenna to avoid carrying a tuner so looking at a EFHW (End Fed Half Wave) instance. There is a lot of information out there. David VK3IL page describes a similar quest he went on and a search of the SOTA forum search pointed me towards HB9TVK. Thinking of using T80-6 for traps and a T140-43 for the matching transformer, RG178 coax and lightweight wire. Yes looking at grams here and the trap weight has to be trimmed else the wire will sag too much and can’t be seen on a summit with a sagging antenna!

More on antenna as options are finalised. Also will be building a CW radio for wet harsh conditions. Ordered the QRP-Labs single-band 5W CW transceiver kit and will build into a waterproof case.

 

Allen

Vk3ARH

 

13082017 – VK3/VC-003 & VK3/VN-030

13082017 – VK3/VC-003 Mt Ritchie in (VKFF-0556) Yarra Ranges National Park

Parked at the gate of Road Fifteen off Acheron Road. Got out, grated up and got on with the walk,

Mt Ritchie is a great walk. Your are walking down a maintained road that is seasonally shut. No issues with navigation or rough areas just a case of keep going up until you reach the summit.

WalkUpRitchie

Using a Garmin VirbX and still getting use to it. The mountain is square just my mount is not aligned.

MtRitchie 13082017

Not as much snow this year as previous. The summit is a clear open space with signs to use as squidpole mount and enough room for a long antenna. I took 41m end fed as expecting the use of 80M given recent conditions.

ViewDownAntenna

Looking down the antenna here to the operating position. 41m end fed. The KX3 tunes it to everything. 9 contacts. All CW. Two S2s. First for the day with VK5CZ on VK5/NE-082  and after a lot of work with VK4JAZ on VK4/SE-117. This contact demonstrated the value of CW. It was marginal at best but we managed to get through.  Two 80m contacts to work the local CW enthusiasts. Despite being 10℃ and being a ‘sunny’ day the wind was chilling and kept rugged up. Spent an hour on the summit and decided it was time to head home picking up another summit on the way.

VK3/VN-030 Mt Strickland

After reading Paul VK3HN blog I added Mt Strickland to the list for the day. Had been up  and yes it was was a clean run. 

 

RouteToStrickland

Headed back down Acheron Road to turn right into Feiglins road to Mt Strickland. 

DipoleonStrickland

Operating position on Mt Strickland. This is a open summit with enough room for the biggest antenna. I ran up the 20/40 dipole as was intending to qualify and keep heading home.

Park contact with VK4SMA in Mount Perry Conservation park and two ZL contacts. Headed back down to Acheron Road then into Healesville and home. Back in  time for tea.

2 Summits, 2 S2S and 22K steps for the day. 

23072017 – VKFF-1879 Woowookarung Regional Park

VKFF-1879 Woowookarung Regional Park

Woowookarung Regional Park is a brand new 641 hectare park in Ballarat.Previously called Canadian renamed to Woowookarung this week. So between the time Paul listed to it to when I updated the ParksnPeaks database it allready needed an update.

Spent the week adding new parks and updating site data with CAPAD data so keen to get out and play radio.

I was not quicked enough for first activations beaten by Peter VK3FPHG who got out Friday to claim the new park.

This site is 10 minutes up the road. Between SOTA peaks Mt Bunnyiong and Mt Warrienheap.

Subie VKFF1879

Recently added a HF radio to Subie. Had a bracket welded to the bullbar so now suporting a Terlin Outbacker vertical.
These parks activation are looking good. The day was gray so operated from the car with HF, VHF and computer at hand.

InSubie VKFF1879

22 contacts including 5 P2P contacts with VK2JNG at VKFF-0588, VK3PF at VKFF-1877, VK5NIG & VK5STU at VKFF-0017 and VK2HAX in VKFF-0017.

Went ot 20M to see if any VK6’s around. Poor conditiond so back to 40M to finish up and head home as still tasks to complete.

Qualified for VKFF but short of the 44 required for WWFF. No issues as will be back soon enough.

 



08072017 – VK3/VT-010

08072017 –  VK3/VT-010 (Talbot Peak)
In KRMNPA – 3NP-004, WWFFID – VKFF-0020,  Baw Baw National Park.

This is one of the closest 10 Pointer SOTA summit to me. Taking advantage of the winter bounus period to gain another 3 points. 13 in total.

I was planning to go into the Alpine for a new site but the cold weather (well it is winter) put an end to those plans. Decided to take this site instead.

Glenn VK3YY was keen to also get out and we had both been chased off this hill three years ago due to bad weather so both keen to revisit.

20140712 131640

VK3ARH July 2014 in different conditions.

Drove down and picked up Glenn on the way through Melbourne. We took Glenn’s car as I had already done 2hrs driving so happy to rest. The drive up was cold but no snow. Previous attempt to activation of this site was aborted due to harsh weather whoever this was to be text book.

VT010VK3ARHVK3YY

Glenn VK3YY and myself on the way up July 2017, much better conditions.

Good access. You park at the Mt Erica car park then follow the AAWT. We hit snow half way up and whilst it was cold it was a pleasant walk as all geared up.

We are looking for Talbot Peak with is just off track and behind Mt Erica.

AntennaOnvt010

The summit was not as open as I remembered and had to weaved the dipole through the trees. I worked CW whilst Glenn worked SSB. 

3 S2S contacts, VK1RX on VK2/SM-052, VK2HRA on VK2/CT-019 and VK3OAK on VK2/ST-039. The rest of my contacts (9) were with the usual culprits on CW being VK3CAT,VK2IO, VK7CW,VK3BYD,VK2JDR,VK5CZ,VK2UH,ZL1BYZ and VK4FW. True to the weather predictions, the morning was great but then on 13:00 the grey clouds started to drop snow. Given previous experience and as we had both qualified comfortable we packed up and headed down the the car.

Nice acivation. Worth getting up early for. Will be back next year.

04062017 – VK3/VS-008 & 12062017 – VK3/VS-016

Saving pennies as want a HF radio in the car so picking up local summits.

VS 016

Testing gear and practicing activating in the wet conditions. This included setting up antenna (dipole v end fed) in tight positions, navigating without GPS and wet conditions.

04/Jun/2017 – VK3/VS-008 (Mt Cole)

Mt Cole has easy access however the operating environment is with heavy undergrowth so a challenge when wet. You could drive to the summit however I’m happy to walk so parked down hill and walked up. Open so easy to deploy dipole  but the the ferns looked great but hide rocks, hold water and catch antenna wires making setup diffucult.

12/Jun/2017 – VK3/VS-016 (Mt Gorrin)

Mt Gorrin whilst a short walk is challenging as no defined track (the way I went) and rocky operating position.Navigation up is simple as head for the highest point however rocks in the way so have to stay aligned.  Top is rock so dipole was more trouble than worth. End Fed killed it here.

Conclusions,

Bothy bags are excellent.

The KX3 is a killer radio. Inbuilt ATU, internal battery and the CW filters make for a top quality radio in a box however it is not ready for harsh conditions.

The 817 with internal battery in a Worldpouch case is ready for harsh conditions. However lacking inbuilt tuner. THere are several options for end fed tuners or use use a trapped dipole.

The resonate trapped dipole is a superior antenna to an end fed. However the end fed is easier to setup as only required two points whilst the dipole requires three and a central position.

The FT817 with resonate antenna is the choice for harsh operating conditions.

26042017 – VK3/VW-010

VK3/VW-010 (South Mt Difficult Range) in VKFF-0213 Grampians NP.

ViewFormVK3VW 010

Second summit that I had been waiting on access restrictions to be lifted. Had addressed Mt Difficult in January having decided not to include South Mt Difficult range at the time.

This was challenging but not Difficult. The weather provided more challenges. It was inclement on the drive up to a point where I nearly decided to abort but as I could see blue sky coming so pressed on. In the end there was rain and hail but no real wind son case of get on with it.

Drove around Mt Victory road to turn towards Wartook Reservoir to gain access to Mt Difficult road. This is a slow trip due to winding road and tourists. This was the point where previous plan to qualify this summit failed as the road had been closed due to fire damage. Not just the road but even walking down the road was off limits. However not the issue this time.

SubieVW010

Drove down Mt Difficult road and left Subie at the base of Carters track. This track has a reputation for being a challenge for 4WDers requiring rescue however it was closed this time of the year and will provide clear quick access to the ridge line. Chinamans Road was also closed due to the fire damage but would have been a longer walk so not considered.

Walked 1.2Km up the track with two active creeks to arrive on the ridge line. Only 1.4Km from the summit but no tracks so here the work started.

It hailed on the way up. I was proceeding along the ridge line and decide to take cover under a rocky outcrop.

ViewUpToVK3VW 010

From there  I could see a valley forming and hear water running. Decided to follow this creek up to the summit to avoid climbing over rocks. This proved to be a good decision as the ridge line are two parallel rocky out crops. The creek gave me clear access to the summit and also showed a cleared route back to the track.

Given the conditions I had no desire to reach e summit so once the GPS indicated I was in the zone I proceeded to setup and qualify the summit. Found a great spot with cover and enough trees to support the squid pole. Only used SSB as worked all chasers and was not prepared to stay for a long time.

Used the KX3 and short end fed. There were not a lot of options as to antenna length in this position and the propagation gods smilled on me with excellent signal reports.

A good summit that requires attention. Not to be done in extreme weather due to potential exposure but worth the walk.