Since discovering the AM activity on 3870 back in 1996, it has been my pleasure to be involved with some of the finest and most interesting hams in our hobby.   The site isn't just about me. It's also about the other hams on 3870 AM and our activities as reflected on many of the following pages.
    Hover mouse over any picture in a photo album to read the caption or click on a photo to open a slide show with large pictures for easier viewing.
                                
Contact: w7jhs@embarqmail.com               Updated:  Mar. 27, 2011

Latest Updates:    

Winterfest 2011 at Mineral, WA - many new photos posted
New W6SGJ Operating position (last photo on Shacks on 3870 page)
Updated photos of W7JHS Operating Position (first 2 below)
Official 3870 Roster as of March 2011
                       
                         W7JHS Operating Position   
                                                                

   The main operating position as of March 23, 2011.  The set up includes 10 receivers and 8 transmitters for AM operation, switchable in any of 80 combinations.
    On the top left is the Echophone EC-1 with the Echophone EC-2 and EC-3 on the shelf below.  Centerpiece transmitters include the Viking Valiant and Globe Champion 300.  
    To the left of the Globe Champ is the CW setup, an Elecraft K-1 QRP transceiver and the Icom 706 MkIIG (when installed).



    Moving to the right side of the operating position we see the K7DYY JR. and SR. transmitters along with the 100th DYY Exhibitor.  Below that is the Hallicrafters SX-25 receiver on the left and the National HRO-7 with matching speaker and doghouse power supply.
    On the middle shelf is the Heathkit DX-60 transmitter and the Hammarlund HQ-140X receiver.
    On the bottom shelf is the Harvey-Wells Bandmaster TBS-50C and its original power supply which can be used barefoot or driving the LFE amplifier.  Also on the bottom shelf is the BC-614E speech amplifier for the BC-610.



    Shown in the left rack is the K7LFE, Little Faint Echo Laboratories Model 8 linear amp with a pair of 813's in grounded-grid.  Packaged in a homebrew wooden rack, the amp runs around 1KW PEP on SSB and 375 watts of carrier on AM.  Also shown are the SB-610 and Beckman monitor scopes and the 2600 volt power supply for the linear.
   The wooden receiver rack houses the SX-111, R-390A, SX-101A and the BC-342N.  The BC-610 with outboard modulation reactor rounds out the lineup.

                                     K7DYY Rigs



    Designed and built by Bruce, K7DYY, here are the two Class D transmitters.  The green one is Serial #1 of the K7DYY Junior models.  Completely self-contained and power from the 120vac, it conservatively runs at 160 watts of carrier.  The larger one, the K7DYY Senior, runs 350 watts of carrier and both use the DYY processed D-104 microphone.  Next to them is the DYY 100th Exhibitor which displays plate color with about 865 volts at 120ma. For more on the K7DYY Senior rig, checkout Bruce's website - www.k7dyy.com.