I took the 70MHz transverter out for the first time today.
In preparation, by 10am this morning I had built a PA that was giving 4-5 Watts out. Unfortunately by 10:01 it had died. Thus my test was limited to 80mW TX. More devices on order.
I could also hear the ignition noise of the constant stream of vintage cars that passed by; some of which parked next to me, wiping the band out.
A long period calling CQ bagged a station in Rochdale. A station in IO72 called me in response to a request on KST. I could hear him but 80mW was not sufficient for a contact.
Don’t see why not. You managed to make 8 contacts from there on 2m, why should not 4m be equally possible? I might need an amplifier and a beam though!
I think it is excellent to see people taking an active interest in one of the most underused bands! However now access to the band has never been easier with Chinese Imports from Wouxun and Anytone.
Richard I am happy to share my knowledge of 4m - checkout this news article and scroll down to the “Tay Beam”!
Very effective beam, cheap to make - however making the elements may be tricky but I have found the suppliers on Ebay to be fantastic.
Tapping the aluminium is the hardest part but very rewarding!
In terms of Amps, that is an area i have not looked into! However Spectrum Communications produce a kit of parts, Tony is very obliging and seems to be helpful when it comes to support etc. I am sure you know that his technical prowess cannot be questioned after reading his practical wireless articles etc!
Don’t see why not. You managed to make 8 contacts from there on 2m
Sure did - carried two backpacks, one of which contained the 12AH SLAB and 180W BNOS linear amplifier! It certainly felt good to whistle into the mic and see the bargraph light up to the 120W output level. Pity I didn’t have the LiPo / NiMH packs at the time or I’d have run the full wack!