开云体育

Chuck, When you move the VR1 slightly does the gate voltage change ? It should vary from 0-5V If it does and the current at PA power line does not change - then the IRF may be faulty. Raj, vu2zap

Cool!? I have one of those cases on hand!

Hi, It appears that the design is for a dynamic mic as I didn't find any bias resistor 10O on the active track of the Lay file. Perhaps we may include one with PTT switching facility? preventing mic

Thoughts : on 40/80 BPF - 12 v relay triple pole . 40 M off ? - 80 M on . Relay adds extra capacitance in for 80 m across C2 / C4 / C6 about 600pf . I am not sure how much stray capacitance of the

Hey Ken , did your friend ever come up with the filter list for the different bands ? Buzz VE7BEE

I agree with Mark . Good price , the fact that you can buy the Raduino separately and at only $25 shipped ? Great deal . And don't rock the supply chain for the rest of us guys by keep bringing it up

peeps, i will setup and announce the non technical stuff to a separate mail id. lets keep this group for all the tech stuff concerning all bitx builds. as an aside, at 14 dollars we spend 5 dollars

My BITX40 Arrived INDIA to KANSAS 20 days 1/3 to 1/23. The BITX40 was my Show & Tell at the W0VFW club meeting last night. I played W5KUB's video of his BITX40 QSO- Tennessee to South Africa. In my

http://www.jpmsupply.com/1-8-NICKEL-PANEL-MOUNT-STEREO-JACK-p/89111.htm I have order from this place 4 or 5 times and really like their prices and delivery is fast. Texas based. Mark K3MRK Sent:

To HF SIGS ?: Your customer service is good , the product is good , the price on the BITX board is good . THANK YOU for offering us QRP ham guys , the ones that believe in your project , that had

One issue with adapting the Bitx40 for use as a general coverage receiver is that the IF at 12mhz is sitting right in the middle of some interesting radio spectrum. ?We could get around this by

It’s the best price out there. Look around. And this is the 4th time I’ve read this post from you. Sent: Wednesday, January 25, 2017 2:02 PM To: [email protected] Subject: [BITX20] Friendly

I’m very happy with my $59 transceiver. I was under the impression from the beginning that this was not a money maker for those involved in the distribution but rather an effort to give those of us

Two switches. Note that the junction of C6 and C7 is floating for DC. ?So one bandpass filter has a 10k resistor to gnd, and one has a 10k resistor to 5v. ?The main board has a third 10k resistor to

This is the 3rd time I’ve seen it. You probably aren’t seeing your own posts. Sent: Wednesday, January 25, 2017 11:08 AM To: [email protected] Subject: [BITX20] Customer Noservice. This is what I

Something like this: http://www.parts-express.com/cat/35-mm-mini-connectors/1504?utm_source=google&utm_medium=cpc&utm_campaign=1-9_Cats_B&utm_group=35-mm-mini-connectors_1504_B I've ordered from these

I haven't worked on the LPF yet, but I have 40/20 BPF switched with relays. They are manually switched over for now. 73 Ken VA3ABN

Hi Larry, At the time I modified the code I hadn't found the notes about the change needed to accommodate the newer '5351 code - it seems as though there is (or was) no obvious, single FAQ-type of

For a dual bander, the band switching is easy. mount three slide switches in a line: one to flip the LPF, t he second to flip the BPF, the third to toggle a logic level to the arduino. then tie all of

I assume that deal was ended on the 20th as we were told it would. Sent: Wednesday, January 25, 2017 3:12 AM To: [email protected] Subject: [BITX20] Deleting the truth. Please pay USD 25 to Paypal id