You can set the sort order of messages? Just click on the link in the date column. Your preferences will be remembered, so you don't have to do it again when you return.
The project is completed finally after 15 months,interruped by by illness etc. Main problems were of my own making. There were a few cold solder joints and a...
2599
g4gcl
Jul 2, 2012 5:56 am
Hi John I'm sure Steve will come back with the 'official' answer but the 40m version was the subject of several emails which started in mid February 2009. I...
2600
steve@...
hamlab3
Jul 2, 2012 7:13 am
Morning, I modified an MKARS80 to 40M but there were some problems, all were resolved except the need for AGC... perhaps I will look at this again sometime. ...
2601
johncronhelm@...
johncronhelm...
Jul 2, 2012 10:55 pm
I use a 7 amp hr. Gel Cel battery for my rig which works well but a bit heavy to carry around for portable use. I get the impression that 8 AA Batteries in a...
2602
Michael Meerman
mmeerman
Jul 4, 2012 3:43 pm
I read on Ron's webpage that the 40m conversion of MKARS80 was a non-starter See: http://www.pa0rcl.com/PA0RCL/MKARS40.html But if there is going to be a -40...
2603
simonmcgraw@...
simonmcgraw...
Jul 4, 2012 9:16 pm
Hi Steve I had full power for about 10secs, then no power output (again!) Using the Tx data sheet, my Q16 emitter is )0.632v but the anode of D20 is 0.118v,...
2604
stu_m0mmz
Jul 8, 2012 8:42 pm
Firstly, Hello, I'm new to the group. I was fervently reading through many topics on Friday before posting here. This topic has been covered many times and...
2605
Michael Meerman
mmeerman
Jul 8, 2012 9:00 pm
Hi, welcome to the club! 80m conditions have been very bad. Did you check on another rx that there were signals receivable? If you don't have another rx, you...
2606
stu_m0mmz
Jul 8, 2012 9:13 pm
Hi Michael, Whilst I accept that conditions weren't brilliant, I also have an icom IC-718 rig which I tested and seemed to be picking up the usual Italian...
2607
Michael Meerman
mmeerman
Jul 8, 2012 10:20 pm
Hi Stu, unfortunately I cannot much other advise,it almost sounds like the antenna is internally not connected, but I suppose you checked for those obvious...
2608
steve@...
hamlab3
Jul 9, 2012 7:12 am
... Morning, The hiss will be coming from the audio amp, the LM386 is a little noisey when set to high gain. Does it transmit at a reasonable power, 4 to 5W?...
2609
johncronhelm@...
johncronhelm...
Jul 9, 2012 10:49 am
Hi Stu. Here is something simple to check. I had this" his"for a time until it was discovered I had a dud BNC connector. i changed it and all was well with the...
2610
stu_m0mmz
Jul 9, 2012 11:02 am
Thanks John. Something I hadn't considered. I clearly checked and double checked my antenna connections, but not the actual connection from the board through...
2611
stu_m0mmz
Jul 9, 2012 11:05 am
... Thanks Steve. I wanted to get receive working before I moved onto Transmit. The hiss from the audio amp is actually quite welcome - it shows that something...
2612
simonmcgraw@...
simonmcgraw...
Jul 11, 2012 10:45 pm
Hi I am trying to trace the transmit power through the circuit. Everything is fine up to Q21. At Q21 I have normal DC voltages, 0.2vRF using Steves RF probe at...
2613
johncronhelm@...
johncronhelm...
Jul 12, 2012 10:22 am
Hi Simon, Is D17 correctly orientated, probably is but just in case! John....
2614
Simon McGraw
simonmcgraw...
Jul 12, 2012 12:38 pm
Hi John Yes D17 is the right way round. Thanks for your thoughts Simon ... [Non-text portions of this message have been removed]...
2615
Steve Drury
hamlab3
Jul 12, 2012 7:56 pm
What have you got on the collector of Q20? Steve...
2616
Simon McGraw
simonmcgraw...
Jul 13, 2012 6:56 am
Hi Steve I have dc 0v on Rx, 7.5v on Tx and 0.1v RF on Tx Thanksa lot Simon ... [Non-text portions of this message have been removed]...
2617
pe1fjn
Aug 3, 2012 3:41 pm
MKARS80 People, Was able to construct T1340 and T1380 where I added a 10 turn bourns and dial to make easy tuning possible.9QRZ.COM) Similar stuff I plan to...
2618
John
g4gcl
Aug 3, 2012 3:58 pm
Hello Marc On my MKARS80 which is in its original case I fitted one of these 10:1 drives http://www.mainlinegroup.co.uk/jacksonbrothers/6020.htm Jackson...
2619
johncronhelm@...
johncronhelm...
Aug 21, 2012 11:14 pm
Hi All , Wanted to let you know how wonderful the MKARS80 is. Within this week I have made a contact with England and another with Denmark running 5watts into...
2620
MPW
f5mpw
Aug 22, 2012 6:00 am
Hello John. I will have time in winter for a contact. Yes MKARS 80 is a very nice small transceiver. I have a lot of compliments with it! 73 Philippe F5MPW Hi...
2621
woodiescbj
Aug 23, 2012 6:28 am
Hi John, It is a great kit I have also managed a transatlantic QSO with an OM on Prince Edward Island, my antenna is a fullsize G5RV folded into a horizontal...
2622
pe1fjn
Aug 28, 2012 7:03 pm
Just to share an experience with transformes T1,etc.: I was very worried about the transformers, but with a low cost temp controlled solder iron adjusted at...
2623
pe1fjn
Sep 1, 2012 7:14 pm
So today I completed most part of the kit, and was able to connect the RIG to the antenna 19:00UTC, very fine RX tonight on 80m, many many strong signals come...
2624
g4biy
Sep 13, 2012 4:29 pm
My MKARS80 works well on receive and seems to be putting out a signal but the audio seems very poor quality and there seems to be too much mic gain. Tried...
2625
Steve Drury
hamlab3
Sep 13, 2012 9:41 pm
Has the BFO been correctly set? Best to set accurately with a frequency counter. Has the PA transistor bias been set properly? Could be the electret but they...
2626
g4biy
Sep 14, 2012 8:27 am
Thanks Steve, I'll check your suggestions. Mic was from Maplin - not sure of type...
2627
steve@...
hamlab3
Sep 14, 2012 8:50 am
I haven't had any reports of problems with Maplin mike, if you give me the Maplin part number I will take a look to see if its suitable. Steve...
