Most commented posts
- Build your own Hytera cable — 36 comments
- Icom IC-9700 frequency modification — 15 comments
- Icom IC-9700 Power overshoot — 15 comments
- Icom IC-9700 and WSJT-X — 14 comments
- Hytera MD785(G) noise modification — 13 comments
Author's posts
Apr 30 2017
N1MM+ and Icom IC-7300 Waterfall
The developers of N1MM+ software released a new build Amongst bugfixes there is one new feature to mention. Waterfall support for the Icom IC-7300. Read more on the N1MM Logger+ Facebook page or the documentation page on the website. https://www.facebook.com/N1MMLogger/posts/1353285571407733
Apr 26 2017
VHF and UHF preamps
Today the preamps for 144 and 432 MHz arrived from Wimo. They are manufactured by the German SHF-Elektronik and powered via the coax-line (My Icom IC-9100 supports 12 volt over coax). Both units have a VOX unit so no need for a seperate PTT-line (for now). Now I only have to find some time to …
Mar 27 2017
HAMNET QSY to PI1UTR
Last week we’ve reconnected the 220 meter high accesspoints in the Gerbrandy tower. Tough I’m not able to physically see the tower since it’s 31km away from my home (I can see the PI2NOS tower 16,3 km from my home) I accidentally discovered the Gerbrandy signal (PI1UTR) on HAMNET is 5 dB louder then the …
Mar 05 2017
March 2017 VHF-and-up contest
This weekend I found a few hours to participate in the IARU Region 1 March VHF-and-up contest. I started late on Saturday due to work for HAMNET and PI6ATV in the IJsseltein Tower but managed to run for about two hours. On Sunday late in the morning I found another few hours to contest. In …
Feb 05 2017
New rotatable tower
Today I’ve made some progress by replacing the antenna tower on the roof. It’s now rotatable. The Diamond X6000 has been replaced for the X5000 so the total length doesn’t exceed the 5 meter due to regulations to keep it license free without the need for a building permit. The 9-element LFA for 144 MHz and the …
Dec 09 2016
HAMNET live
The HAMNET connection is live. It’s not VPN based, but radio based on 5 GHz. I’m using an Ubiquiti Nanobeam M5-400 with 40cm dish to have enough gain towards the TV tower located about 16km from my home. Line of Sight is (just) availlable which is mandatory for a 5 GHz connection. The dish needs …
Oct 18 2016
ATV station for 5700 MHz (6cm)
The new ATV station for 6cm consists of: 23cm UniTX transmitter for 1400 MHz uplink DG0VE Frequency multiplier DG0VE amplifier: 60 mWatt > 600 mWatt Final amplifier: 150 mWatt > 14 Watt SMA coax relay to switch between TX and RX RX converter 5,7 -> 1,0 GHz with pre-amp Some sensors for temperature, fan control, …
Aug 10 2016
Building an 13cm SSPA
With a few hams on the club we’re busy building 13cm SSPA’s. The base equipment is ex 3G/UMTS equipment. There are two models availlable for around 10 euro’s and can be found on ham flea markets. The small module has an output of about 30 Watts, the big modules output is around 90 Watts. on …
Aug 06 2016
Hytera MD785(G) noise modification
The Hytera MD785(G) DMR transceiver works great out of the box, both analogue as digital. But there is one problem. Noise coming out of the speaker. Even when the tansceivers audio gain botton is set to zero. When the squelch opens, noise can be heard. There is no way to fix this in the firmware …
Jul 14 2016
Welcome 13cm band SSB
Since last month I’m QRV on 2302 MHz to, with help from the LZ5HP transverter. Next is to build an SSPA based on ex 3G/UMTS equipment. The modules and 24VDC PSU is there. I only need to find the right heatsink.
Jun 29 2016
Bluestack and BlueDV: Hotspot in a box
Developments for DMR and D-Star hotspots go fast. I already owned a UHF hotspot from PE1PLM which fits on top of the Raspberry Pi. With custom firmware, this also works with MMDVM software thus DMR. A new toy is the BlueStack, developed by PE1MSZ and sold via CombiTronics.nl. Put the DVMEGA (UHF) transmitter on top of …
Jun 29 2016
New house: Welcome back VHF UHF SHF
I’ve bought a new house and will be moving over end of september. The good news: It has a big, flat roof to put my VHF, UHF and SHF antennas on top of it. The other good news: The 3 story high building itself is about 9 meters in height, but it’s on top of a hill …
Jun 10 2016
Yeasu FT-817ND as IF transceiver
To work more portable on UHF+ and SHF (and to have a nice transceiver to feed the LZ5HP 13cm transverter) I’ve bought an Yeasu FT-817nd at the Hamshop. Within two days, the 0.5PPM TXCO arrived from England via Ebay. I bought tis unit because the IC-9100 isn’t a great transceiver to use with HF. As well as …
May 10 2016
Last minute VHF contest
Last weekend, VERON held her VHF-and-up contest together with other radio societies throughout Europe. Since I was bored anyway Ive collected some stuff and went portable for an hour and half. Things didnt go smooth. I switched the 70cm and 23cm beam feeders, only noticing during break down. That’s why 70cm didn’t work at all …
Nov 30 2015
CQ-WW-DX CW contest 2015
This weekend was CQ-WW-DX CW contest time. I spend some hours on the radio, in between other activities. My goal was to make about 100 QSO’s on each low band but I didn’t want to spend the night behind the rig. So the score is very low for the 160-meter band. The 10-meter band was open but …
