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.
Hello Martien, My voltage is 13.1v and I'm using a 12 amp power supply. Do you think I should run it at a high voltage ?...
1530
mark
mark2w0jmk
Feb 1, 2010 12:17 pm
Hi Steve as the photos show the mk2 is coming along very well. Have you got a pic that will lock the huff and puff on 3.7750 MHz . If you have one programmed I...
1531
martienrijssemus
martienrijss...
Feb 1, 2010 2:48 pm
Hello Jerry, Why dont you give it a try, cranck up the voltage to 14V and see if you can get it up to 5 Watts? Another possible cause: some powersupplies...
1532
Nigel Gunn G8IFF/W8IFF
nigelgunn99
Feb 1, 2010 2:55 pm
The "standard"; voltage is 13.8V....
1533
Jerome
w9tko
Feb 1, 2010 4:00 pm
I did try with another power supply at 13.8v and the results was the same. I also used two different meter with low power settings and the read adout the same....
1534
Steve Drury
hamlab3
Feb 1, 2010 9:37 pm
Jerome, Do you have to speak loudly to get the 3W - normal speech around 6" from the microphone is normally sufficient. If you whistle VERY loudly you can't...
1535
Steve Drury
hamlab3
Feb 1, 2010 9:40 pm
Hi Mark, This bug is still on my to-do list - I will bring it to the top and let you know when its sorted. Steve G6ALU ... From: "mark" <mw3hqt@...> To:...
1536
mark
mark2w0jmk
Feb 1, 2010 9:45 pm
Hi Steve thanks for the reply I have to admit it's doing my head in hi hi. I acquired a 10k 10 turn pot tonight in my local club and I must say it makes hell...
1537
Steve Drury
hamlab3
Feb 1, 2010 9:49 pm
Sorry Mark, I guess that must be a popular frequency for you? Steve ... From: "mark" <mw3hqt@...> To: <mkars80@...> Sent: Monday, February...
1538
Jerome
w9tko
Feb 1, 2010 10:29 pm
Steve, It draws 1.18 amps on a loud whistle and the LED does go out. I can get 4 watts out on a vary loud whistle and when I speak into the mic at 6" I have to...
1539
mark
mark2w0jmk
Feb 1, 2010 11:11 pm
Yes Steve I do frequent the frequency quite often Mark 2w0jmk...
1540
zip
philzap1
Feb 1, 2010 11:28 pm
Steve, Just to give you an update, since I've modified my mkars80 to a turbo assisted model (added a fan inside the std case), its frequency is now completely...
1541
a_strong@...
a_strong...
Feb 2, 2010 1:48 am
I finished assembling my MKARS80 kit yesterday, 8 days to the day after placing the order with Steve. Total build time about 30 hours, which included metering...
1542
vk2jdp
Feb 2, 2010 3:09 am
Steve, Re: 40m version Have you had time to look at the mute issue yet? If not, I'd be happy to order a kit (with the different xtals & program) and give it a...
1543
Steve Drury
hamlab3
Feb 2, 2010 7:07 am
Thanks for the compliments Phil, sounds as though the little fan is doing the job then. The radio wasn't really designed for digi modes but as its "straight...
1544
Steve Drury
hamlab3
Feb 2, 2010 7:10 am
Hello Alan, The audio output is normally cosidered to be very adequate - if you couldn't get any TX power I would expect a problem with one of the mixer...
1545
martienrijssemus
martienrijss...
Feb 2, 2010 8:01 am
Jerry, Mine draws the same peak current. Of course the 5 Watts is only in the peaks, so with a loud whistle. Average power when QSO-ing is much lower.Did you...
1546
martienrijssemus
martienrijss...
Feb 2, 2010 8:15 am
Hi Phil, When the weather permits I will be increasing my long wire to ½ wave, who knows how far your transceiver design will get me. You be amazed! I am...
1547
a_strong@...
a_strong...
Feb 2, 2010 12:31 pm
The LCD voltage display on my MKARS 80 consistently reads about 0.3 volts low. With an applied voltage of 13.8V (three different DVMs agree) the indicated...
1548
a_strong@...
a_strong...
Feb 2, 2010 12:51 pm
Hi Steve - many thanks, My aerial is not of the best, only a low level inverted "V" doublet resonant on about 20MHz. I will investigate. Very nice received...
1549
Jerome
w9tko
Feb 2, 2010 1:04 pm
Martien, I tested it on the antenna and on a dummy load and the output was the same. The antenns SWR is flat....
1550
Phil
philzap1
Feb 2, 2010 9:08 pm
Now it wasn't homebrew,,,,,,,,,, but did have copper water pipes wound as coils and steam was used, but to cool the bottles. Phil ... From:...
1551
Phil
philzap1
Feb 2, 2010 9:19 pm
Martien, You put my contacts to shame. Phil ... From: mkars80@... [mailto:mkars80@...] On Behalf Of martienrijssemus Sent: 02...
1552
Steve Drury
hamlab3
Feb 2, 2010 10:23 pm
Jon, I investigated it again the other evening - problem originates from the colapsing RX 12V supply, it isn't muted properly as it is muted via the TX supply...
1553
Steve Drury
hamlab3
Feb 2, 2010 10:24 pm
Lack of length is your problem then Alan! Steve ... From: "a_strong@..." <A_Strong@...> To: <mkars80@...> Sent: Tuesday,...
1554
Steve Drury
hamlab3
Feb 2, 2010 10:35 pm
The voltage reference for the battery voltage indicator is taken from the 5V supply, the 78L05 isn't specified for accuracy (5%), so a small change in the 5V...
1555
Steve Drury
hamlab3
Feb 2, 2010 10:38 pm
Jerome, You appear to have to speak louder than normal to achieve the 3.5W output - have you checked all the small transformers to check the wires are soldered...
1556
martienrijssemus
martienrijss...
Feb 3, 2010 8:17 am
Hi Steve and Jerome, Always good to double check those small transformers, but I would expect not only the output but also the DC current (when transmitting)...
1557
Ray Stringfellow
g4tzr
Feb 3, 2010 9:08 am
Hi All The accuracy of even good quality commercial amateur power meters at low levels is poor. (+_ 20% is not uncommon at the bottom of the range) It really...
1558
David White
davidwhite400@...
Feb 3, 2010 9:50 am
i think phil is talking about the 600,000 watt transmitter at crowborough where i worked for a while, he sneaked in and tried to use it on the amateur bands...
