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Author Topic: Frequency readout/ display for a 101E  (Read 309 times)
KC9GUZ
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Posts: 164




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« on: February 21, 2008, 07:17:21 AM »

Hello.
What would work best for a FT 101E as a frequency display? I need one thats new or old. I have looked at some sold by a few CB dealers but the ones they sell only go between 25 and 30 MHz.  
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W5FYI
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Posts: 1044




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« Reply #1 on: February 21, 2008, 08:09:48 AM »

   Since the VFO in the '101E runs between 8.7 and 9.2 MHz, it would be difficult to find a stock display to cover all ranges from 160-10 meters, but it would be a piece of cake to find one that covers just the VFO range (check http://myworld.ebay.co.uk/jpl995/ for one). You would then have to add or subtract the mixer frequencies and the display frequency to know exactly what frequency you were tuned to.

   A different approach would be to use a frequency counter loosely coupled to the output stage, after the filtering, and read the transmitted frequency there. Trouble is, it would only work on transmit.

   However, unless it is critical that you know the exact frequency, the '101E's tuning dial and calibration switch should get you an accuracy within 500 Hz or so of the crystal calibrator.

Stew, W5FYI
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K5LXP
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Posts: 4472


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« Reply #2 on: February 21, 2008, 11:04:20 AM »

If you want to go through the trouble of interfacing this to the bandswitch (or switch it manually), this will work:

<http://www.norcalqrp.org/fcc1.htm>

Mark K5LXP
Albuquerque, NM

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N6AJR
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Posts: 9913




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« Reply #3 on: February 21, 2008, 11:14:28 AM »

check out the    ft 101 yahoo group
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TANAKASAN
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Posts: 933




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« Reply #4 on: February 21, 2008, 01:45:32 PM »

See http://www.eham.net/forums/Elmers/174787

Whatever counter system you use it would need to take account of the BFO frequency, the VFO frequency and the frequency of a crystal oscillator which varies depending on band.

Tanakasan
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DERFLY
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Posts: 5




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« Reply #5 on: February 21, 2008, 02:56:41 PM »

I just bought a counter for my old TS520s.  There's also a counter available for the 101 series Yaesu.

see this website

http://www.aade.com
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KE4DRN
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Posts: 3721




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« Reply #6 on: February 21, 2008, 03:29:48 PM »

hi,

Spectronics made a digital display that accepted
signal from the vfo connector on rear of radio
(also a model for the kenwood 520)

do a search on ebay for spectronic* DD-1
they show up all the time.

73 james  
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KC9GUZ
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Posts: 164




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« Reply #7 on: February 23, 2008, 06:05:35 AM »

I checked out the AADE website and they have a counter that will work with the 101 series. It is very reasonable at around $50.00 new. I have found some DD1s' and a few YC 601s' on Ebay, but it seems they go for more $$ than id want to spend on technology thats almost 30 years old and considering some of the parts are scarce as hens teeth!!!
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