New 134GHz UK distance record
G8KQW and G8ACE are very pleased to report two 134GHz contacts on Sunday, September 20, 2015
The first from Butser Triangle near the summit of Butser Hill above Portsmouth to Lane End to the SE of Winchester. A distance close to the UK distance record of 17.2Km. Signals were exchanged both ways and a recordings and photos made by G8ACE can be found in the folder here:
https://drive.google.com/folderview?id=
0B_ijQuVCB1fMMG5OZ1RyWnVnSkU&usp=sharing
G8ACE then moved to a site near Cheesefoot Head increasing the distance to 19.2Km, this slightly exceeds the current UK distance record for the band. Antennas at both ends were aligned using optical telescope and solar reflection from mirrors to pinpoint the exact far ends of the link, as soon as the FT817 IF Rx was turned on by G8ACE a signal from G8KQW/P was heard. However propagation had become somewhat unstable during the course of the site move and the signals were exchanged both ways but only in shorter bursts not as continuous reception. Other difficulties such as high level traffic noise from the nearby A272 made copying more difficult than for the earlier contact. Headphones to be taken next time!
The two 134 GHz contacts were made between 15.00 and 18.00 with Temperature 21C Humidity 67% with a Dew Point of 14.3C
Both sets of equipment built by G8ACE.
Transmitters using DBES diodes multiplying a 33.6 GHz signal x4 from a Broadern amplifier module available on Ebay. One transmitter using a crystal OCXO signal source x1440 disciplined by RDDS and the other a synthesiser running at 2.8 GHz with a smaller x48 multiplication to 134 GHz. FSK modulation employed.
Receivers using diode mixers driven at 23 GHz with synth LO sources at 2.8GHz again multiplied x48 with a 2m IF frequency.
73 .. Ian & John
UK Microwave Group links
http://microwavers.org/
https://groups.yahoo.com/group/ukmicrowaves
Moonbounce The recent Market Reef OJ0B expedition resulted in 462 contacts via 2 meter Earth-Moon-Earth (EME) and meteor scatter activity with station... Read more
The January Edition of Digital QST – our annual DIY issue – is now available at http://www.nxtbook.com/nxtbooks/arrl/qst_201601/. In this issue . . .... Read more
ARRL Headquarters was closed on Thursday and Friday for the Thanksgiving holiday, which delayed this bulletin by several days. This week we return to... Read more
Three BIRDS-3 satellites with Amateur Radio payloads are scheduled to be deployed from the International Space Station on Monday, June 17. The BIRDS-3... Read more
The amateur radio linear transponder (SSB/CW) payload on the Russian satellite DOSAAF-85 (RS-44) has been activated. Dmitry Pashkov R4UAB reports: The... Read more
Elecraft radios have acheived excellence in quality and design for the fast growing market of QRP Portable Operators. The AlexMic is a Audio Amplied S... Read more
The US Coast Guard says it’s received reports from crews, ship owners, inspectors, and other mariners regarding poor reception on VHF radiotelephone,... Read more
“W3LNE calling CQ, CQ, CQ for all Scout Ham radio operators, CQ, CQ, CQ. If you are you a Ham and a Scout, I have a question for you. Have you i... Read more
Now completing her third term, ARRL President Kay Craigie, N3KN, will be handing off the baton this week. The ARRL Board of Directors will elect her s... Read more
Showing G8KQW, G8ACE and G8BKE in FM QSO over 102km on 76Ghz . The KQW / ACE contact was completed duplex. Read more
“I’ve had my DX Commander All Band vertical in the air for about 6 months now and I wanted to show how the antenna has faired over the Aus... Read more
Rajesh Vagadia VU2EXP is well-known as the West India Zone Regional Coordinator for AMSAT-INDIA. Over the years he has done a great of educational out... Read more
Lebanon, OD5, ministry of communication conducted a radioham examination event last Saturday 16 oct 2016 in the premises of Ogero, ministry of communi... Read more
CHAMELEON ANTENNA EMCOMM-III Portable HF Antenna is specially designed for short to long range portable and man-pack HF communications. The EMCOMM III... Read more
Recent Posts
OJ0B on Market Reef Logs Hundreds of 2 Meter Moonbounce , Meteor Scatter Contacts
The January Edition of Digital QST 2016
The K7RA Solar Update 11/30/2015
Ham Radio Satellites to Deploy from ISS
DOAAF-85 (RS-44) amateur radio transponder activated
Audio Amplied Speaker Microphone designed for the Elecraft KX 2 and KX3 transceivers
US Coast Guard Warns of LED Lighting Interference to Marine Radios, AIS Reception
Apply Ham Radio to All Scouting Activities
ARRL President Kay Craigie, N3KN, Concluding Nearly 3 Decades as a League Official
New UK Record on 76 GHz
DX Commander All Band Vertical after 6 Months in the Air | Review
Indian radio hams interviewed by UK radio station
Lebanon, OD5, Conducted Radio HAM Exams After 13 Years Of Silence
Chameleon Emcomm IIIP Antenna – Antenna, Portable, 160M-10M
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fnew-134ghz-distance-record%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151