Forum Posts

sernstfortin
Mar 23, 2020
In General Discussions
Can anyone point me to an economical point of sale for surface mount L and C components that would be viable for LPF construction? I do not wish to mod my ZT Desktop - Mid WSPR Transmitter, but I'm looking at playing with RPi-3 and WSPRRY library... Suggestions? 73 KJ4VPI, Sam
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sernstfortin
Feb 18, 2020
In General Discussions
Harry, So I think you need a Forum specifically for this subject. I know the following has been discussed as possible enhancements: programmable gains / output power, and enhanced band scheduling based on time of day or priority. Got another for you. So I'm going to start experimenting with a 10W amplifier. It has a Push-To-Talk (PTT) capability. In idle, the amp pulls only 0.4A, but in transmit, somewhere between 2A and 4A, nominally 3A. Here is the item on ebay: https://www.ebay.com/itm/10W-HF-PA-10-watts-13-5v-HF-amplifier-for-HAM-radio-CW-SSB-FM-digital/332237134236?hash=item4d5ae0599c:g:EdYAAOSwvylbVKEA So one idea would be to enhance the transmitter with an extra set of dry contacts to perform the PTT key-down function. While the transmitter is waiting, it could allow an external amp to go into a low-power mode, which would be good if say, using a battery supply. S.
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sernstfortin
Feb 17, 2020
In General Discussions
I've added the product to the EHAM.NET site and entered my initial impressions as a review. Perhaps others would be equally inclined to provide their impressions so that more people learn about this product. I am really enjoying the updated Mid+ version!!! FWIW, my product review is located here: https://www.eham.net/reviews/view-product?id=14527
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