Chris yes this has been done I will take some pictures of the versatower that can be used as an emergency MF mast radiator for broadcast Wont be down at its location for a few weeks.. there is a lot
Hi All The technique used for MF broadcast systems to combine 2 or more transmitters into a single antenna is valid here. This is not a 1 loading coil solution, but is relatively easy to implement as
Paul For idea 3, a pair of 74LS90 or similar /10 chips will do it The absolute frequency instability at 13.6MHz may be worse than at 136KHz from the rig, depending on what mixing / multiplication is
Lots of stations beaconing tonight, GM4SLV is 539 'fast' CW G0NBD and of course GI4DPE. I will call cw normal speed at 23:00z on 503.00 Can see myself on Bham Grabber.. a great confidence boost HI. T
Have put up a temporary active 'ferrite rod' antenna, only 3m up. ends E-W Impressive results DI2AM is 559, SM6BHZ also. GI4DPE 579 not dissimilar to what I have heard on the inverted L, though tonig
Still calling on 502.245 , beacons DI2AM 589, DI2AG 549 OK0EMW 559 to nil, v deep slow QSB, now some QRSS 'MR' on about 503.5 good condx tonight Mark GM4ISM
Great evening. QSOs so far with GI4DPE, GM4SLV and GI3PDN Hearing great sig from GW3HXO, waiting to work him (not being able to net on is a pain!) Thanks also for FB reports Dave and Roelof Other wea
seems condx not stable, I was on Dave's grabber fb before and after, but even John was up and down, I am running now on 503.000 Mark GM4ISM IO85AR -- Original Message -- From: "Dave G3WCB" <ganymede4
Gents, I have received my NOV this morning, so with luck I will be QRV this evening (so long as the wind is low enough to raise the antenna) I will announce details here. Regards Mark GM4ISM IO85AR w
Hi all, A little quieter last night on 500Khz, but conditions still OK I worked Finbar 579 with almost no QSB during the day . We had a long chat on the key (something I have almost never done) all m
Gents, I am QRV now, single freq xtal, 502.225 Can see myself ob B ham and Shetland grabbers, nice QSO with Finbar earlier, and GI3PDN is a good sig too Antenna match is off a bit, it is rather wet h
Me too please Jim Thanks Mark GM4ISM Just blown up my exciter :<(( Dear LF Group, I have written up an article describing my transverter with EER PA for 500kHz. It runs to 7 pages with circuit diagra
Gents, I have just put a grabber on line, access is via the MF / LF page of my website www.dc2light.co.uk The system is using my main antenna, but when i can sort it out will use a ferrite rod active
Dave, John and group As noted on my website and here the grabber I am running is very much 'experimental'. in practical terms a useable service is provided with a 5 minute refresh rate (even with the
Gents, The connection here is cable, some 'limits' on the data transfer (325Mb upload) 4pm-9pm the upload connection gets throttled back to 128Kb/S, and download to 1Mb/S.. normally I am on 4Mb/S and
Gents, Clearly visible on the waterfall, there is a signal I can't identify, carrier on and off, but I cant discern a pattern.. anyone got any idea what it is? fairly deep QSB on the OK and DI beacon
Hi All, my grabber is now back on line after a short break while I was away. The UPS failed and my wife had to disconnect it to stop the high pitched alarm. Hope to update my webpage (primarily with
Gents, having now built 2 of the softrock systems, I can recommend them for use as grabbers. Being image cancelling systems they interface directly with the PC soundcard and all the clever stuff is d
Gents. clearly visible on peaks of QSB for the first time, DI2BO in QRSS, weak but visible just below OK0EMW, DI2AG and DI2AM, signals seen on 503 earlier from G0NBD and briefly MRF copied on QRSS. G
Gents, Thanks to Wolfgang DL4YHF, the grabber at my QTH is now running a new beta version of Spectrum lab, that should stop the problem of multiple users getting partial images. After an initial rush
